Yuchai YC25-8 User Manual Download

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Hydraulic Digger

5-42

filter core reduces,too.Avoid destroy the hydraulic pump and other

hydraulic elements,it suggest the periods as follow:(Unit:Hour)

Working rate of the hydraulic

hammer

Replace period of the hydraulic

oil

Replace period of the filter

core

50% 500

500

100% 250 250

Caution: It adjust the pressure of the system as the hydraulic

hammer’ request when use the hydraulic hammer

7. Check the pressure of the system

Check it every 500 hours

1) It adjusts and checks the pressure after the temperature of

the hydraulic oil arrive 50

2) Use the manometer with the flexible pipe. The measurement

of the manometer is 0-30Mpa.

3) Connect the manometer with the direct head,M10*1 to the

piston pump(see the picture

①②

)

4) Detect the pressure adjust value of the main loop safety

valve. The value is 3.5Mpa+/-0.2Mpa. If the value doesn’t

arrive the request, it need adjust the main safety valve of the

Summary of Contents for YC25-8

Page 1: ...Hydraulic Digger USER MANUAL ...

Page 2: ...stand the content of the user manual about the safety operation Understand know the safety sign of the machine Let the person leave the workplace who not the operator It should have a safety operation training before you operates the machine You have the duty to observance the ordinance laws follow the relevant direction about machine operation maintain from YUCHAI ...

Page 3: ... Safety Operation 2 14 Transport Load and Unload 2 24 Maintain 2 25 Fire proof Explosion proof Antigas 2 26 Accumulator 2 27 Hydraulic System 2 28 Ⅲ Parts Introduction Pandect for Operation Device Cab Type 3 2 Pandect for Operation Device Canopy Type 3 3 Panel Switch of Left Controlling Box Switch group 3 4 Panel Switch of Right Controlling Box Panel meter and Switch 3 5 Safety Lock Part 3 7 Opera...

Page 4: ...he Machine 4 11 Operate The Operating Device 4 12 Working On The Slope or In The Water 4 14 Out of The Muddy Condition 4 15 Operating Manual 4 16 Take down Installing The Bucket 4 19 Place The Machine 4 20 After The Operation 4 22 Takedown Transport The Machine 4 23 Operate The Machine Under The Cold Hot Weather 4 28 Deposit The Machine 4 29 Reason for the Technical Trouble Resolve 4 31 Ⅴ Maintena...

Page 5: ...intenances of The Engine 5 26 Hydraulic System 5 27 Accumulator 5 33 The Reducer 5 35 Pedrail 5 37 Support Roller Carrier Roller Leading Roller 5 38 Lubricating 5 39 Air condition If the machine have 5 40 Replace The Gear of The Bucket 5 43 Washing The Plastic Cushion of the floor 5 44 Fuse 5 45 Ⅵ Attachment Manual Safety Item 6 2 Installing take down step of the attachment 6 3 Operation Manual of...

Page 6: ...Guangxi Yuchai Heavy Industry Company Limited ...

Page 7: ...Hydraulic Digger 1 1 1 Prolegomena ...

Page 8: ...ormation When you want to know the informations of the machine please view the picture as follow Overall Information The nameplate is on the nearside of the platform Engine Information The nameplate is in the top of the cylinder cover ...

Page 9: ...he engine is in the digital combination instrument which in the cab Machine File Please fill the machine and engine s series No in the table When you need to buy the spare parts or the relational informations you can tell us the No Direction of The Machine ...

Page 10: ...Hydraulic Digger 1 4 Front back left right top underside in the manual same as the direction as follow ...

Page 11: ...ylinder 4 Lever 5 Lever oil cylinder 6 Moving arm 7 Moving arm oil cylinder 8 Rotating platform 9 Rotating platform oil cylinder 10 Driving wheel 11 Pedrail 12 guide deflection sheave 13 Bulldozer oil cylinder Note The lookum is optional equipment It only used in the better condition Technical Parameters ...

Page 12: ...drail Mm 300 steel rubber E Rotating radii of platform Mm 1351 F Length of pedrail Mm 1935 G Distance of roller Mm 1455 H Height from floor Mm 320 I Height of Boom end Mm 1409 J Width of the platform Mm 1420 K Height of engine cover Mm 1384 L Height from floor of platform Mm 563 Width of bucket Mm 517 Driving speed low hight Km h 2 4 4 2 Rotating speed of platform Rpm 10 12 Cab Canopy Deflection a...

Page 13: ... digging depth Mm 2610 D Max digging radii Mm 4610 D1 Max digging distance of level floor Mm 4487 E Digging radii of Max digging height Mm 2957 F Min rotating radii Mm 1856 G Max bucket depth of Bulldozer Mm 372 H Max uplift height of Bulldozer Mm 262 Max dig power KN 17 4 Note Technical paremetes are subject to replace without prior notice ...

Page 14: ...Hydraulic Digger 1 8 3 Bucket series black area is standard collocate ...

Page 15: ... 4 3 12 36 Low speed 2 4 22 94 58 300 5 Hydraulic system First enter to the throttle hydraulic system Main valve Intake multiple valve Variable plunger pump Flux of 2 plunger pump L min 52 8 Pressure Mpa 21 Flux of 1 gear pump L min 15 4 Pressure Mpa 21 Flux of lead gear pump L min 7 7 Pressure Mpa 3 9 Return oil filter paper material with 10micron Oil absorbent filter gridding filter 7 Electric s...

Page 16: ...Hydraulic Digger 2 1 2 Safety Rules ...

Page 17: ...fety prompting word The machine includes Danger Warning Notice etc The safety prompting word Explain them as follow Danger If not elude the result may be lead die or hurt It only use in the condition which have the most dangerous Warning If not elude the potential danger may be lead die or hurt Notice If not elude the potential danger may be lead hurt Or it can prompt the operation which can hurt ...

Page 18: ... put some first aid medicines in the machine and routine check them 4 Before operating or examining please check the function of the safeguards are ok 2 Flee hammer fire extinguisher Flee hammer fire extinguisher installing on the wall of the cab When you couldn t out or into the cab need escape the cab you can use the flee hammer break the glass But when you break the glass please protect you eye...

Page 19: ...Hydraulic Digger 2 4 ...

Page 20: ...ry day If they not see clear please clean them When cleaning the sign it only use the calico water soap Don t use the organic solvent gas etc They many are make the sign lose 1 Sort of safety sign In the user manual the safety sign adopts Glossary safety sign and Graphic safety sign A Graphic safety sign It use the picture to show the Safety warning information Simple and easy to understand B Glos...

Page 21: ...Hydraulic Digger 2 6 2 The place of the safety sign The sign is the picture only show the Safety sign part of the sign other will show in next section ...

Page 22: ...Hydraulic Digger 2 7 3 Graphic instruction of the safety sign 1 Care and remoteness the operating device 2 Tail Trade Mark 3 Hoisting Mark ...

Page 23: ...ic Digger 2 8 4 No treading 5 Pay attention to the safety when up down the machine Up down the machine please slow and fist the handrail face to the machine use the ladder and the pedrail 5 Reading the manual ...

Page 24: ...Hydraulic Digger 2 9 7 Binding Mark 8 Hoisting and Binding mark 9 Locked mark Left control box locked ...

Page 25: ...Hydraulic Digger 2 10 10 Long arm warming mark 11 Left locked mark 12 Warning marks ...

Page 26: ...c please read the manual Electric system can easy to shock hazard It should read the manual when it maintain 14 Warning mark on Left control box 15 Do not start the engine through short circuit of the starting motor 16 Excavator electric shock mark ...

Page 27: ...Hydraulic Digger 2 12 17 System warning mark 18 Hydraulic oil filling mark 19 Sign of transfuse the fuel oil 20 Sign of Lubrication ...

Page 28: ... Sign of sling 22 Accelerograph mark 23 Pay attention to lock it after open the window of the cab If it doesn t lock the window it will close because of the outside force or the libration may be hurt the body 24 Sign of noise ...

Page 29: ...Safety sign 27 The sign of center of rotating 28 Dozer blade and Chassis adjusting sign 30 Don t allow to split drill cut and hit the accumulator the high pressure of the air spring and need keep way from the fire or the high temperature ...

Page 30: ... 15 The parts have the high pressure air The wrong way to dispose it can lead some hurts Please let the person who has more experiences to dispose it 30 Binding sign 31 Sign of Door latch 32 Use notice of the flee hammer ...

Page 31: ...Hydraulic Digger 2 16 33 Sign of oil draining port on the fuel tank 34 Sign of traveling direction 35 Servicing warning sign 36 Glisten sign 37 Shift sign ...

Page 32: ...of the electric gas phone water sewage or the other public conduit which hang or buried Warning Before digging please contact the public establishment service system or sector 13 When operating the machine in the building you need to know the space of the door aisle the bearing capability of the floor 14 Know the distance of the wire the line the machine the machine the floor If possible it s bett...

Page 33: ...body to hitching 3 It only allow the operator sit on the seat to operate the machine 4 It s not allow to start the engine by short start motor 5 In the cold day the machine need to warm up 6 Make sure have enough engine oil fuel and hydraulic oil Warning If the operation handle hangs the sign no start the engine it doesn t allow to start the engine B After start the engine After start the engine i...

Page 34: ...he operation will opposite 2 Before the machine driving rotating please ring the trumpet to warn the people 3 The digger operated on the hand ground which the width must more than 1 5 times 4 Before driving please lock the cab s door The cab s window allows to open but it needs to lock 5 Before back off or rotating if it can not see the back it need arrange the signal compere Safety rules of drivi...

Page 35: ...rates it must keep a distance with the people the building and other machines 5 When the machine drives on the area which have the underpass the bridge the cable it need have the sign command keep a distance 6 Upgrade or downgrade it need lock the platform 7 When the machine overpass the bridge the building the bearing it should confirm whether they can bear the weight of the digger 8 If the machi...

Page 36: ...ed towards the direction which under the slope It should let the moving arm lever with the slope parallel the gear of the bucket have 20 30cm distance from the ground And lock the platform then upgrade low speed 4 When the digger downgrade it locks the platform The drive wheel need towards the direction which up the slope Elongate the moving arm lever and the gear of bucket have 20 30cm distance f...

Page 37: ...en stop the engine and the operator out 10 No driving or operating on the slope which the portrait gradient more than 250 11 Don t driving or operating on 10 the slope which the landscape orientation gradient more than 250 9 As far as possible to keep the machine balanceable no Danger It is very dangerous to stop the machine on the slope please do as follows if have to be Please put the dozer blad...

Page 38: ...not travel on the rock or want over roadblock 13 Don t swerve on the slope 14 On the slope the engine and the hydraulic oil must warn up 15 When the pedrail and the slope is 900 the machine is very dangerous if it rotating If the machine must rotating it should make the bucket close the ground near the machine body the pedrail towards the top of the slope and rotating low speed 16 When the machine...

Page 39: ... operating it should remove all the things and the people 2 To confirm the workplace can bear the machine then let the machine enter 3 As far as possible the two pedrail in the same plane then it can operate 4 To confirm the workplace no cable no windpipe no water pipe the machine starts 5 When the machine back off it should observe whether the moving line regular whether it has the roadblock 6 Wh...

Page 40: ...draulic oil tank operated it should have a little value 8 When the machine digs deep It need to avoid the bottom of the moving arm or the oil tank s soft pipe of the bucket touch the ground 9 When the machine operated it need to avoid the moving arm the lever the bucke the cab lookum touch the nonego 10 When the machine rotated it needs to avoid it touch the cover of the engine 11 When the moving ...

Page 41: ...and the frame will break 14 Not use the deadweight of the machine to increase the digging power 15 Not use the falling power of the bucket regard the handle the knapper the monkey It will make the back of the machine bear over weight 16 Not use the bucket to dig the road surface more Otherwise the parts will over load and break ...

Page 42: ...oy the rideau and the wall When the machine rotates it doesn t make the gear of the bucket into the soil 19 Not make the bucket into the soil and not use the driving power to dig It makes the back of the machine beat over weight 20 Not dig the working plane which under the hanging part It maybe have the danger of the rockfall or the hanging part collapse ...

Page 43: ...It maybe have the danger of the rockfall or the hanging part collapse 22 Please install the cabin protecting device If the working area is dangerous for rockfall 23 Do not travelling or working on the soft surface and swampland 24 Don t use excavator to draw other device or object ...

Page 44: ...or mustn t jump off It must to fist the handrail or the pillar of the lookum Following the machine is easy to overturn 1 The machine moves on the uneven road the two pedrail one side high one side low or half of the pedrail hangs 2 One of the pedrail touches the soft soil another touch the hard soil 3 One side of the machine is Limestone cave or the slime 4 The machine operates on the slope which ...

Page 45: ...the slope it swerves the platform rotates fast or no power 8 When the machine turn adown about 1800 9 It is the uneven road for the back operation 10 The machine dig the underside of the body when it depth digging 11 The machine moves on the frost road 12 The two pedrail have the machine oil or the lube 6 Stop the machine See it at the chapter 4 ...

Page 46: ...n t have anybody or anything in the traveling area of the loaded unloaded digger Except the digger uses the sling or drives it from the port it can uses two lath which enough strong to put in the transporter The gradient of the lath should less than 150 The length of the gradient is 3 5 times of the height The width of the lath is 1 2 1 5times of the pedrail Up or down the slide it should put down...

Page 47: ...ucket and run the engine 3 minutes with low speed then stop it and pull out the key Release all the power of the hydraulic system It be forced to stop the machine on the slope it should have the enough roadblock on the underside of the pedrail It makes sure have enough distance with other machines when the machine stops When it maintains the electric system or electric welding it should take down ...

Page 48: ...ring and the line need to check frequently If fined the broken aging part it must replace them to avoid the fire Keep the line linker clean and fix it fastness Check the line everyday It doesn t to put the thing which flammability explosive into the digger When it need oiling it must stop the engine and keep away from the fire and not leave the machine When it oiling it not allow the fuel overflow...

Page 49: ... and the fastener the cover the dead block whether they fixed fastness Accumulator needs far from the fire to avoid the high temperature Otherwise it explodes If the digger with the sealed cab it needs to check the sealed center clapboard to avoid the exhaust gas into the cab make the operator poisoning No operating the machine on the are which the airiness system not good When it happens the fire...

Page 50: ...e cloth the skin have the vitriol it must use the lots of water to wash and go to the hospital Before operating the accumulator it should turn the key to OFF Use the electric torch to check the electrolyte of the accumulator it should stop the antichattering system The end of the sealed accumulator dilates it show the accumulator freezed When the accumulator freezed it doesn t electricize or conne...

Page 51: ... right place No make the tool or other metal touch the port of the accumulator No fall the tool or other metal near it Connect or cut off the sign of the accumulator as the right order The port of the accumulator should fix fastness When the accumulator electricizes it produces flammability hydrogen So before electricize it should unload the accumulator from the machine and put it to the draughty ...

Page 52: ...y Do as follow 1 When the hydraulic system has the pressure it doesn t check or replace 2 If the pipeline of the soft pipe has leak and around the area wet Please check the pipeline or the soft pipe whether it broken and the soft pipe whether it dilates When the operator checks it should wear the safety glass and the glove If the high pressure touch the eye it will have the danger of the ablepsia ...

Page 53: ...to replace the soft pipe 1 The tie in of hydraulic pipe has leaked or destroyed 2 The envelope broken or cut off or the steel wire of the reinforcement out 3 Some parts of the envelope dilates 4 The moving part contorts 5 The envelope has the impurity 3 Safety rule of the high temperature oil The hydraulic oil doesn t cooling on the working or after working it is high temperature and high pressure...

Page 54: ...start the engine and runs low speed hold out the oil tank of the bucket Draw back the oil tank of the lever Then down the bucket put the bulldozer on the ground stop the engine 2 Within 15 seconds after stop the engine it turns the switch to ON and operates the joy stick to all the direction operation device driving to release the pressure 5 Safety operation of the stored energy device Warning The...

Page 55: ... operation device by the deadweight The way of the control pipeline to release the pressure which has the stored energy device 1 Downing the operation device to the ground and stop the hydraulic crush or other attachment 2 Stopping the engine 3 Turning the start key to ON to make the current of the circuit moves 4 Turning the safety lock joy stick to the free place driving the joy stick of the ope...

Page 56: ...Hydraulic Digger 2 41 pipeline 5 Turning the safety lock joy stick to the lock place to lock the job stick and the attachment control pedal ...

Page 57: ...Hydraulic Digger 3 1 3 Parts Introduction ...

Page 58: ...e 4 Joy stick of the right operation device 5 Pedal cover of the assistant control valve 6 Joy stick of the left driving 7 Joy stick of the right driving 8 Joy stick of the bulldozer 9 Radio 10 Plane assembly of the right control box 11 Lock pin of the platform 12 Plane assembly of the left control box 13 The gun handle of the engine ...

Page 59: ... lock handle 4 Joy stick of the right operation device 5 Pedal cover of the assistant control valve 6 Joy stick of the left driving 7 Joy stick of the right driving 8 The gun handle of the engine 9 Joy stick of the bulldozer 10 Radio 11 Plane assembly of the right control box 12 Lock pin of the platform 13 Plane assembly of the left control box ...

Page 60: ...is open which has the switch sign 3 Fan switch It is open which has the switch sign 4 Switch of windscreen wiper It controls the windscreen wiper of the fore window It has two station OFF the windscreen wiper doesn t move ON the windscreen wiper moves 5 Switch of the caution light It for the caution light of the top cab It is open which has the switch ...

Page 61: ...trolling Box 1 Start switch It uses for start or stop the engine It has four stations OFF station It can insert or draw the key all the switch of the electric system are close and the engine stops ON station When the engine runs it should keep the switch key on the ON station ...

Page 62: ...nd turn the key to START station to start the engine 2 Igniter It can connect the element of the igniter and it also can connect the cable of the igniter Note the total capacity of the current under 10A 3 Digital Combination Instruction Sheet 4 Deflecting indicator light If the light lights it indicates the machine on the operation mode which the moving arm deflecting type And when it switches to ...

Page 63: ...e working time which accumulative total Alarming indicate Power supply When the switch in the working location it lights means switch on Machine oil low pressure alarming of engine If the machine oil pressure of the engine under 0 1Mpa the annunciator lights Water high temperature alarming of engine If the water temperature is higher than the standard value the annunciator light Charge indicator l...

Page 64: ...Hydraulic Digger 3 8 have not worked Warm up state indication When the engine warm up the sign light ...

Page 65: ...be moves and makes the operation device or the platform move Put the safety lock handle and the left operation box to the lock station The lead system control not supply the oil the operationdevice the platform rotating not work except driving to left right the bulldozer it can safe protect Put the safety lock handle and the left operation box to the free station The lead system control connects t...

Page 66: ...m lock Platform locks and unlock Lift the pin of the platform lock see the picture The bending block a of the pin hang on the box c unlock the platform and the bottom frame Put down the lock pin put the bending block on the station d The pin bearing b will lock with the platform and the bottom frame When it locks it should the platform and the lock pin hole in one line ...

Page 67: ...n the joy stick right the platform turn right Turn the joy stick left the platform left Rotating the moving arm Turn the joy stick right the moving arm return Turn the joy stick left the moving arm left B Joy stick of the right operation device Operating the moving arm fore push the joy stick the moving arm down Rear pulls the joy stick the moving arm lift Operating the bucket turns the joy stick ...

Page 68: ...n the working order the machine is the mode of the platform rotating When it presses the button it makes the turning head of the joy stick deflects and presses the replacement button of the joy stick it can return the mode of the platform rotating 2 Operate the bulldozer Push down the joy stick the bulldozer into the soil Pull up it the bulldozer lift ...

Page 69: ...eft right driving joy stick to control the pedrail of the machine Operating one side of the joy stick it can make machine to turn one side 2 Control the speed 1 To the standard configuration it uses the assistant operate lead valve to control the speed It opens pedal cover of the assistant operation lead valve and step the pedal of the lead valve to make the machine driving high speed 2 To the ele...

Page 70: ...e stop the engine pushed ago the handle to the end After stop the machine the handle replaces B Gun handle Lookum type Pull behind the gun handle of the engine The gun increases Before stop the engine pushed age the handle to the end After stop the machine the handle replaces Driver s Seat Warning If the machine to turn over or move ...

Page 71: ...sting handle of the backrest the backrest can adjust about 5 grade loosen the handle the backrest lock perchs Adjusting the pillow Moving the adjusting handle of the pillow back and push pull the pillow to the right place Adjusting the slope of the handrail turn the slope adjusting handle of the handrail it adjusts the slope Caution When it needs to adjust the seat it stops the machine After adjus...

Page 72: ...have any unconventionality it need replace the belt every three year The product date indicates in the leave factory label Operating the machine it must tie the safety belt When the operator tie the safety belt it doesn t make the belt twist 1 Fix the safety belt Holds the safety belt and checks the belt whether twists Adjusts the length of the belt Then puts it into the button And pulls the belt ...

Page 73: ...ation 1 Turn the air condition switch to OFF anticlockwise 2 Turn the wind speed switch to I II III deasil as need 3 See the picture a b turn the wind direction t the right place 4 Turn the wind speed switch to OFF anticlockwise it stop the air condition 2 Basic operation of the refrigeration 1 Press Basic operation of the refrigeration to replace the wind ...

Page 74: ...stop the refrigeration 3 Basic operation of the warming According to Basic operation of the aeration when the warm water valve open Radio 1 Power 9 Channel preset key 2 Time frequency switch 10 Volume balance adjuster 3 Replace key 11 Volume adjuster 4 Stereo mono mix switcher 12 Display 5 Manual downwards channel selection time adjuster 6 Manual upwards channel selection time adjuster 7 Automatic...

Page 75: ...ual Press5 key or 6 key to downwards or upwards channel selection Press5 key or 6 key long time it can downwards or upwards channel selection fast 5 Memory channel by manual When it selects the channel by automatic or by manual press the preset key of memory channel long time more than 3 seconds 6 Stereo mono mix switcher Press 4 MO ST to switch the stereo mix and mono mix When the display STEREO ...

Page 76: ...turn the natural display mode in 5seconds 9 Volume adjusting Turn 10 to adjust the volume 10 Tonality adjusting Turn 11 to adjust the tonality 11 Left right balance adjusting 12 System replace If the radio doesn t work good please press 3 RST it will renew the status when it produced Caution 1 The digger doesn t have the time function of the radio 2 Because of the different radio it has the differ...

Page 77: ... blocks to the lockpin When it needs to close the door it should press the door pull rod The lockpin open and the door open 2 Rear window The rear window can as an exit When the door couldn t open and the operator couldn t out and need get away from the cab it can use the flee hammer to smash the rear window 3 Fore window Turnover window If it opens the turnover window the operator can have a good...

Page 78: ...he two commode handles of the turnover window Operating the commode handles to glide the turnover window When the turnover window glide to the right place and push up the turnover window to the lock place loosen the commode handle lock the turnover window locked Whereas the turnover lets down ...

Page 79: ...Hydraulic Digger 4 1 4 Operation Manual ...

Page 80: ...e machine every day 5 Check whether the operation device the oil tank the rubber pipe destroy 6 Clear the dust which around the engine the radiator the accumulator 7 Check whether the hydraulic device the oil tank the rubble pipe the tie in leak 8 Check whether the infrastructure destroys whether the bolt loosens whether the bolt loosens which connect the frame and the platform 9 Check whether the...

Page 81: ...r pipe destroy 5 Check whether the hydraulic device the hydraulic oil tank the rubble pipe the tie in leak 6 Check whether the infrastructure destroys whether the bolt loosens or whether leaks 7 Check whether the instrument destroys 8 Check whether the oil level of the hydraulic oil the fuel the electrolyte of the accumulator the machine oil of the engine between the upper limit and the lower limi...

Page 82: ...ower to start the engine Where as it will fire Before the electrification or use the different power to start the engine it makes the electrolyte of the accumulator unfreeze Before start the engine it should the key insert the start switch and turn to ON check the display state of the indicate alarming light of the digital combination instruction sheet If it has the alarming it need to deal the tr...

Page 83: ...t exceed 30 seconds Caution continuous start it not exceed 10 second the time for start it again not under 1 minute If it doesn t start the engine three time it needs to check whether the system ok Warning 1 When the engine runs it hadn t to turn the key 2 When it drags the digger it haven t to start the engine 3 Haven t to use the way to start the engine which start the motor short circuit Use th...

Page 84: ...en it connect the assistant cable It need to turn the keys of the normal machine and the trouble machine to OFF Whereas when it has the power the machine will move 4 When it installs the assistant cable it must connect the cathode of the accumulator at last When it removes the cable it must off the cathode of the accumulator first 5 When it removes the assistant cable it doesn t let the nip of the...

Page 85: ...tor to warn up When the oil temperature arrive 200 C it can run If it needs it can flex the oil tank of the bucket to the travel end point warn up the hydraulic oil But the time for it not exceed 30 seconds It can repeat till arrive the request of the oil temperature B Examining after start the engine 1 Check whether the indicator light wink 2 Check whether leak oil the lube the fuel and leak wate...

Page 86: ...oling with the low speed running about 5min 3 Turn the key switch to OFF stop the engine and the indicator lights wink 4 Take the key 5 Examining after stop the engine 1 Check whether the machine leaks oil or water 2 Add the oil to the fuel tank 3 Check whether the engine cab has the wastepaper or the scrap Clean the wastepaper and the scrap to avoid the fire 4 Clear the soil of the underpan ...

Page 87: ...4 Before in out the machine it makes sure whether the handrail the pedrail have the soil the oil If they have please clean them 5 No jump up or down the machine when the machine moves it doesn t allow to jump up or down the machine 6 Before leave the machine it must let the operation device down and use the safety lock handle to pull up the control box make the machine in the lock state and stop t...

Page 88: ... the cab please take out the key and lock the door and the window No allow climb up the oil tank the cover of the engine the top of the cab Under any state the operation devices the bucket the lever the moving arm the attachment don t allow have the person ...

Page 89: ...s the bridge the cable you need have the sign command 6 When the machine drives you must fall the moving arm the lever and keep the best station of the barycenter 7 When the machine drives it only allow the operator in don t hitchhiking other persons 8 When the machine drives on the smooth road long time it can t lock the platform But it up down slope it has to lock the platform 9 Before turn the ...

Page 90: ...back off to go ahead 3 Avoid the joy stick replaces suddenly for example from the high speed and stop suddenly loosen the joy stick 2 Prepare for moving the machine 1 Put down the lock pin of the platform lock the rotating of the platform 2 Make the gun handle run to the hi speed to increase the rotate speed 3 Moving the machine forward 1 Adjust the safety lock handle and the control box to the fr...

Page 91: ...it is the lower temperature the driving speed of the machine doesn t right it need to warm up Otherwise if the bottom of the machine has the soil the driving speed doesn t right it need to clear the soil 4 Moving the machine backward 1 Adjust the safety lock handle and the control box to the free station lift the operation device and off the ground 40cm to 50cm 2 The operation is opposition forwar...

Page 92: ...Hydraulic Digger 4 14 Caution Avoid the machine stop suddenly it need have enough space ...

Page 93: ...n the direction when the machine stops Turn left Driving forward pull the right driving joy stick the machine will turn left Driving backward push the right driving joy stick the machine will turn left Turn right the mode same as turn left 2 Turn the direction at the same place When the machine is turn left at the same place push the left driving joy stick and pull the right driving joy stick When...

Page 94: ...Hydraulic Digger 4 16 ...

Page 95: ...he top frame turns slowly too 1 Before do rotating operation it needs to lift up the lock pin of the platform unlock the platform and the chassis 2 If the machine has the rotation head it need to operate the choice button of the left operation device joy stick to make sure the machine stay the station of the platform rotating 3 Operate the left operation device joy stick to do the rotating operati...

Page 96: ...ration control valve operates the moving arm and the bucket Loosen the joy stick they will return the middle by automatic The operation device keep on the original If it operates the control valve in 15 seconds when stop the engine it can down the operation device And it also can operate the control valve to release the rest power of the hydraulic oil line and down the moving arm after the machine...

Page 97: ...tay the rotating state before it rotating 3 Control the moving arm Operate the right operation control valve push forward the moving arm down Pull backward the moving arm up 4 Control the bucket Operate the right operation control valve deflect to left the bucket eversion Deflect to right it draw in ...

Page 98: ...deflecting function it must make sure the machine stay the moving arm deflecting mode before it rotating 6 Control the bulldozer Push down the joy stick of the bulldozer the bulldozer into the soil And pull up the joy stick the bulldozer lift up Caution When the lever operated it maybe pauses It doesn t the trouble it is the normal phenomenon When the lever moves it maybe lacks the oil because of ...

Page 99: ... overload it s very dangerous to rotate to the direction of the downgrade If it must to do it needs use the soil to stack a flat roof and to make the machine keeps the balance No up down the slope it maybe has the danger When the machine is upgrade if the pedrail skids or the power of the pedrial not enough to upgrade no use the pull power of the lever to help it Maybe the machine will overturn Wh...

Page 100: ...Hydraulic Digger 4 22 ...

Page 101: ... and lever is 900 to 1100 When it only one side of the pedrail gets into the mud it uses the bucket to uplift the pedrail and underlay the stow wood make the machine drive out If it necessary it can underlay the board under the bucket B Double sides of the pedrail get into the mud If the double sides of the pedrail get into the mud and skip not to move It can adopt the way which as A to underlay t...

Page 102: ...of the lever and the lever it can have the max digging power of the bucket If it uses the angel effective when it digs it has the best efficiency The dig area of the lever is 450 away the machine to 300 towards the machine Caution If the machine digs the hard ground it is the best way to use other tools crash it then digs 2 Operation when the machine loading On the place which the angle of the rot...

Page 103: ...to dig If it doesn t have the power to dig it can uplift the moving arm After full of the bucket lift up the moving arm and the lever make the bucket higher than the ground and turn the platform the right place to unload the soil Caution 1 No touch the wire 2 After make clear the under pipe the cable then start dig 3 If it gets an electric shock the driver doesn t leave the seat and warn the perso...

Page 104: ...y 2 Avoid to swerve on the road which has the strong friction 3 Avoid to touch the brine it can corrupt the pedrail 4 If the pedrail doesn t use long time it should keep it on the area where shady and cool dry 5 When one pedrail and the foreside device are withstanded no use another pedrail to driving it makes them fray 6 When the machine driving the pedrail not flab otherwise the pedrail maybe do...

Page 105: ...em 3 When the machine driving the bulldozer doesn t hang anything Otherwise it can destroy the bulldozer or the pedrail system 4 When the bulldozer lift up the machine it should make sure the smooth road the bucket can touch the ground ...

Page 106: ...r other parts of the body under the bucket When it take down or installing the pin bearing caution no hurt the hand When it make the hole in line no put the finger into the pin bearing Installing Stop the machine on the ground which hard and smooth When it do the connect work it should know the signal and work careful Make the digger stay the operation state envisage the bucket operate the lever t...

Page 107: ...can touch the ground If the bucket fall down heavy it will increase the resistance and difficult to take down the pin bearing Take down the double nuts of the lock bolt which connect the lever and the connect lever and take down the bolts then take down the pin bearing and the pin bearing of the connect lever and take down the bucket ...

Page 108: ...If it must places the machine on the slope it need put the stow wood under the pedrail make the operation device inset the ground 3 If it touches the joy stick of the operation device incautious the operation device or the machine moves it will lead the accident So before leave the seat it must to lock the joy stick of the safety lock Place the machine 1 Make the left right driving joy stick stay ...

Page 109: ... run 5 minutes with low speed clear over heat then stop the machine 3 Fall down the bucket and the bulldozer 4 Push the gun to the end pull the stop handle to the end if the machine have 5 Start the key and turn to OFF 6 After stop the engine and replace the stop handle 7 Lock the platform 8 Lift up the safety lock handle ...

Page 110: ...eds to pull the two commode handles of the turnover window Operating the commode handles to glide the turnover window When the turnover window glide to the right place and push up the turnover window to the lock place loosen the commode handle lock the turnover window locked Whereas the turnover lets down 2 The sprue of the fuel 3 The sprue of the hydraulic oil tank 4 The cover of the accumulator ...

Page 111: ...Hydraulic Digger 4 33 Caution When it opens the cover of the engine the back of the engine don t stand the person ...

Page 112: ... Avoid the accident it suggest the load unload gradient under 150 or the length of the slope as 3 5time as the height 6 Avoid the machine slip on the slope it needs to clean the soil in the pedrail before starting Make sure the surface of the slope clean no water no snow no ice no lube no oil 7 No correct the turning on the ramp Otherwise the machine turnover If it must to turning it should drive ...

Page 113: ...h the operation he need to uplift the left control box first and cut off the lead operate oil line 15 It must put down the orientation commode handle of the rotating platform before up down the ramp Avoid the platform rotate 2 Loading the machine 1 Need choice the hard smooth road to load the machine and keep a safe distance with the edge of the road 2 Braking the transport vehicle and put he stow...

Page 114: ...otplate 6 Stop driving and hold out the lever B and make the foreside of the pedrail declination to the soleplate of the transport vehicle No allow the operation device touch the frame of the transport vehicle when the machine declination and driving the machine to the stated place of the transport vehicle 7 Put down the lever and fall the bucker on the ground put down the bulldozer make the machi...

Page 115: ...lead operate oil line 3 Fix the machine in the transport vehicle 1 Put the operation device 2 Stop the the engine and take out the key 3 Uplift the safety lock handle and the control box 4 Lock the cab and the cover of the engine 5 Put the stow wood under the pedrails to avoid the machine moves when it transported And use the steel wire to tie the machine not slip to one side ...

Page 116: ...ure the ramps in one plane The max gradient not exceed 150 And adjust the distance of the ramps match with the center of the pedrail 4 Take down the steel wire which fix the machine 5 Start the machine It need to warm up the machine in the winter 6 Put down the safety lock handle 7 Upgrade the lever and the bucket uplift the bulldozer 8 Check the area not have the roadblock 9 Pull up the lock pin ...

Page 117: ...isting the machine it need to turn the operation device to the port of the sprocket wheel and make the bottom of the pedrail parallel to the upside frame 5 Keep the machine level when it lift up 6 It dangerous to walk under the machine when it hoisted B Hoisting program standard technical parameter Caution The hoisting program suit for the machine which is the standard technical parameter It shoul...

Page 118: ...pedrail And it also can thrill through the steel wire under the pedrail 5 Adjust the uplift angle of the steel wire to 300 400 then hoist the machine slowly 6 After the machine leave the ground it need to check whether it balance then hoist slowly C Hoisting program the machine has the hoisting hole If the machine has the hoisting hole it should do as follow 1 Start the engine and adjust the opera...

Page 119: ... Close the door and the widow of the cab and the cover of the engine 4 Make the cargo hook to hook the hoist hole of the moving arm It has the sign near the hoist hole then use the steal wire thrill through the drive wheel and the first return wheel 5 Choice the position for uplift make it stay the barycenter of the machine the barycenter of the machine stay top of the rotating center see the pict...

Page 120: ...er it can replace the pose when the hydraulic oil line of the moving arm oil tank leaks oil 7 Stopping operate uplift when the machine leave the ground and check whether the machine keep the balance Operate uplift when the machine steady ...

Page 121: ... filter every 50hours If it doesn t have the moisture it can delay the check period If it has the moisture it needs to check the oil tank 4 Cooling system Check the coolant before operate the machine in the cold weather Adjust the mix rate 5 Operation device Before operate the machine start the machine with low end Then stop the machine and operate the operation device 10minutes 2 Operate the mach...

Page 122: ...inter use SAS30 grade in summer 5 Immit the same anti cauterization machine oil with 4 6 to the fuel Make them mix better The oil tank need to immit the mix fuel to avoid has the condensate 6 Check the antifreeze performance of the coolant It can reduce the antifreeze performance to 200 C if it use the way which immit the antifreeze Because of the weather the coolant doesn t have the anti cauteran...

Page 123: ...e deposited 1 It need to operate the machine once every month in the period of the machine deposited to make the surface of the parts have a new lube It need to electricize the accumulator 2 Need to run the air condition if the machine has 3 Run the pedrail Warning If it must do the anticorrosive operation inside it should open the door and the window 3 Desterilize after the machine deposited Plea...

Page 124: ...ace it Caution 1 The deposit way which introduced can make the digger deposit one year under normal condition of the weather But after about 6 months it needs to run the parts 15 minutes without overload An immit the lube to the parts 3 It needs to do the required work and check the parts before use the machine which deposited long time After the digger deposited one year it need to ejectment the ...

Page 125: ...re of oil injection lower Maintain the nozzle The trouble of the fuel injection pump Contact assistant service The fuel lacks Immit the oil 1 The engine couldn t start or start difficult The intake vent system obstructed Ejectment the trouble It have many air Contact assistant service The filter of the fuel obstructed Clean the filter The fuel system has the dust or the air Vent and clean the oil ...

Page 126: ...engine overheat Check whether use the coolant right whether the water pump and the belt loose If they have it need to mend or replace them and clear the choker of the flume The level of the coolant low Immit the coolant The temperature sensor has the trouble Replace the sensor The air filter obstructed Clean the filter The belt of the fan looses or trouble Screw down it again or replace The pipe o...

Page 127: ...s or rusts Clean or screw down The belt of the engine loose or trouble Screw down or replace 8 The battery not electricize The engine not electricize contact assistant service The tie in looses or rusts Clean or screw down The battery undercharge Replace 9 The engine not run or run slow The line destroy Contact assistant service The engine has trouble Contact assistant service The electron adjuste...

Page 128: ...ank to the oil pump leak Check and repair and screw down Error use of the hydraulic oil Use the hydraulic oil which righ The hydraulic oil includes the water Replace the oil 13 The hydraulic emulsification or has the foam The level of the oil too low Check the level of the oil The hydraulic pump destroy contact assistant service The oil lacks Immit the oil 14 The pressure of the oil too low or not...

Page 129: ...driving device destroy Contact assistant service 18 One driving device not working The control machine destroy Check and repair The pedrail too tight or too loose Adjust it again The performance of the oil pump reduce contact assistant service The pedrail frame metamorphosed Repair or replace The chain of the pedrail has the scree Repair The control valve leaks oil contact assistant service 19 Dri...

Page 130: ...he tension bearing destroy Replace The line trouble Repair or replace The switch of the air condition trouble Repair or replace Not have the cryogen Check repair immit the cryogen The system obstructed Clean or replace The belt looses or rupture Adjust or replace The expansion valve trouble Clean or replace The decrement machine runs deviant Repair or replace 23 The air condition couldn t refriger...

Page 131: ...Hydraulic Digger 5 1 5 Maintenance ...

Page 132: ...te of the hydraulic oil exceed 200 Operation at the place which has much dust When the machine operated at the place which has mush dust please do as follow Use the air obstruct sensor to Check whether the air filter obstructed regular It requests to clean the core the filter Clean the core of the radiator regular to avoid obstruct Clean and replace the core of the fuel filter regular Clean the el...

Page 133: ...n it dispose the insurants the machine oil the fuel the coolant plastic spare parts the solvent the filter core the accumulator and so on it need to observe the rules Avoid the things into the inside of the machine It doesn t drop the bolt the nut the cushion or other tools into the inside of the machine when it opens the intake of the oil tank to Check If the things drop into the machine it will ...

Page 134: ...lead the serious hurt or destroy Check as follow Whether miss some parts which need Check and maintenance Whether it is right to do all the items which need Check and maintenance Check whether the tools or parts drop into the machine It is dangerous if the parts drop into the machine and clip the connect lever Check whether the machine leaks water or oil whether the bolts screw down ...

Page 135: ...nstalling The fuel Place or immit the fuel no allow the impurity Use the fuel which the choose list of the oil plants shows It chooses the fuel as the temperature of the condition when it uses the fuel Otherwise it is easy to freeze especially under 150 C when it is the low temperature Avoid the moisture of the air freezes in the fuel tank it immit full of the oil tank after finish work It need ve...

Page 136: ...ch cleaned again It must use the new one Check whether it has the metal grain in the old filter core when replace the filter core If it find the metal grain please contact the dealer No open the filter core s package before use Hydraulic system In after working the hydraulic system is high temperature And it is stay the high temperature state when it operates No stand in the front of the parts whe...

Page 137: ...stroyed It will make the creepage lead the machine has trouble Don t use the water washing the inside of the cab Don t let the water into the electric parts when washing the machine Maintenance of the electric system Check and maintenance the hydraulic level of the accumulator replace the lights replace the fuse and the relay and so on No install other electron element except Yuchai allow Need cle...

Page 138: ... they different 820 0413005 Left Blade 1 820 0413004 Right Blade 1 GB T 5782A Bolt M12 40 6 Bucket GB T 6182 Nut 12 6 830D 0501500 The filter core for oil return 1 Every 500 hours GB3452 1 O loop 38 7 2 65 1 GB3452 1 O loop 10 3 2 4 3 GB3452 1 O loop 11 1 8 6 GB3452 1 O loop 6 5 1 5 4 GB3452 1 O loop 8 1 5 4 GB3452 1 O loop 10 1 5 4 JB982 Combination Gasket 14 4 JB982 Combination Gasket 18 4 JB982...

Page 139: ...are important for the machine about the safety They are the soft pipes of the oil liquid The material will replace and easy to aging fret or metamorphose when the machine used long time They will effect the function and maybe have the danger It need replace the parts in the stated period If the parts don t arrive the period but the parts have some unconventionality it must repair and replace them ...

Page 140: ...se the gear oil GL 5 Winter summer SAE80W 90 Lube of the rotating reducer Overload use the gear oil GL 5 Winter summer Lube of the guide wheel carrier wheel Vehicle oil Hz 23 All the temperatures 20 25 centipoise When it is 500 C Lubricating oil lubricating grease 200 C 1600 C Fuel Summer 0 light diesel oil Winter 10 light diesel oil 20 light diesel oil 00 C 00 C 50 C 50 C 150 C 150 C 280 C Coolan...

Page 141: ... 124 165 193 257 264 354 376 502 10 9 900 13 16 30 36 65 78 110 130 180 210 280 330 380 450 540 650 12 9 1080 16 21 38 51 75 100 131 175 209 278 326 434 448 697 635 847 Diameter of The Bolt mm 22 24 27 30 33 36 39 Intensity Grade of The Bolt Bend Intensit y N mm2 The Tighten Moment Nm 8 8 640 512 683 651 868 952 1269 1293 1723 1759 2345 2259 3012 2923 3898 10 9 900 740 880 940 1120 1400 1650 1700 ...

Page 142: ...ad Outside diameter of steel tube Moment Min max M12 1 5 6 20 15 25 M14 1 5 8 38 30 45 M16 1 5 8 10 45 38 52 M18 1 5 10 12 51 43 85 M20 1 5 12 58 50 65 M22 1 5 14 15 74 60 88 M24 1 5 16 74 60 88 M26 1 5 18 105 85 25 M30 2 20 22 135 115 155 M36 2 25 28 166 140 192 M42 2 30 240 210 270 M45 2 35 290 255 325 M52 2 38 42 330 280 380 ...

Page 143: ... G3 8 34 27 41 G1 2 60 42 76 G5 8 69 44 94 G3 4 115 95 135 G1 140 115 165 G1 1 4 210 140 280 G1 1 2 290 215 365 G2 400 300 500 ORFS Rotating Nut Nm UNF Thread Specs of the lineation Min Max 9 16 18 4 14 19 11 16 16 6 24 27 13 16 16 8 43 47 1 14 10 60 68 1 3 16 12 12 90 95 1 3 16 12 14 90 95 1 7 16 12 16 125 135 1 11 16 12 20 170 190 2 12 24 200 225 ...

Page 144: ...hether the machine oil water fuel leak Parts of the machine and the appearance of the soft pipe Fix circs of bolt and hydraulic joint Circs of the operation device light indicator light 1 Working circs of the diesel engine Fuel System of The Engine Check the level of the oil and supply Vent the water and the impurity Clean the oil tank Check the pressure of oil injection 2 Replace the filter core ...

Page 145: ...ening circs of the engine bearing Air Intake System of The Engine Break out the deposit tank 5 Replace the core of the air filter Hydraulic System Check the level of the machine oil Vent the water and dust of the oil tank Replace the hydraulic oil clean the filter Replace the return oil of the hydraulic oil and the core of the guide loop filter 6 Check the pressure of the system Accumulator Check ...

Page 146: ...nd immit Replace the machine oil 9 Check the tighten moment of the reducer which connect the bolt Bear wheel carrier wheel guide wheel Check the tighten moment 10 Check the level oil of the guide wheel carrier wheel Lubricate 11 Immit lube to the point which need Routine period to do Maintenance of the first time to do Every spring and Autumn ...

Page 147: ...e machine leak oil water or the fuel leaks 2 Check whether the parts and the attachment have the rupture the nick or the distortion 3 Check the hydraulic device s fix and connect 4 Check the appearance of the parts 5 Check the working circs of the operation device light indicator light 6 Check the working circs of the engine ...

Page 148: ... the combination instruction sheet to check the level of the oil Do it everyday or every 10 hours It should immit the oil tank after working to avoid have the hydrometeor The gun stay front of the fuel hydraulic oil tank 2 Vent the water and the impurity from the oil tank Vent the condensation water and the impurity every 100 hours Loose the oil drain plug to make the condensation water and the im...

Page 149: ... the air of the pipe laying Caution Don t use the trichlene to washing the inside of the oil tank it only use the diesel oil 4 Exhaust of the fuel loop It need to exhaust the air before start the engine when it replaces filter core of the fuel cut off the pipe of the fuel clean the filter of the fuel and make the air into the fuel loop Exhaust of YC25 2 type fuel loop 1 Open the vent nut of the ba...

Page 150: ... 4 Pre filter of the diesel oil Chang the filter core every 500hours Vent the water and the dust of the separator everyday 1 Stop the engine open the outlet valve and turn the valve about half and three circle counterclockwise till the valve drop down about 25 4mm 1 inch and start to vent 2 Vent the water of the separator till see the cleanly fuel 3 Screw down the valve clockwise when close the va...

Page 151: ... thread 5 Replace the filter core of the fuel Replace it every 200hours or every 3 months It must use the sterling filter core 1 Take down the filter of the fuel 2 Use the cloth which not cottony to clean the surface of the sealing gasket 3 Disuse the O loop 4 Install the new O loop ...

Page 152: ... filter and use the cleanly machine oil to lubricate the O seal ring 6 Install the filter as the manufacturer s order Caution For reduce the feasibility of the fuel leaks it make sure to install the filter fix but on too tight Too tight will destroy the filter of the fuel 7 After replace the filter core start the engine and Check whether the surface of the seal ring leaks the oil ...

Page 153: ...of the coolant Everyday or 10h 1 Check the level of the coolant When a new machine has been started you must check the level of the coolant first And check the level of the coolant everyday or every 10hours Take out the cover of the radiator water tank check the level of the coolant The level of the coolant should under the sprue about 20mm Observe the position of the level in the balance tank The...

Page 154: ...every 500 hours It need clean it in time Because the dust of the radiator water tank will affect the effect of the cooling Open the cover and use the high pressure water or the compress air to blow the dust or the leaves and so on Meantime it need clean the cleading which front of the cooler If the machine has the air condition it need clean the condenser Warning The hot coolant will spurt when op...

Page 155: ... when the pace has much dust 4 Replace the coolant After work 50 hours the coolant will replace first time Then it need replace it two times in one year Spring and Autumn 1 Take down the cover of the radiator water tank open the vent valve to make the coolant out 2 Clean the cooling loop close the vent valve Immit the coolant then start the engine to make the engine run about 10 minutes with the l...

Page 156: ... the beginning of the cold weather The coolant can use under 200 C If the temperature of the condition lower it should increase the proportion of the coolant Warning The coolant is the toxicant Avoid the children and the pet touch the coolant If the coolant doesn t used it need deal it as the rule Warning It must use the coolant in any weather No use the water instead of the coolant The water from...

Page 157: ...ity of the radiator 7L Check the level of the oil Everyday or 10h Replace the oil or replace the filter core Every 250 hours 1 Check the level of the oil Check the level of the oil before start the new machine Then Check it every 10 hours 1 Place the digger to the level road and stop the engine 2 Open the cover of the engine and take out the staff gauge of the machine oil Observe the value which h...

Page 158: ... of the engine Replace the machine oil of the engine after the new machine runs 50 hours Then replace it every 250 hours 1 Place the digger to the level road and stop the engine and remove the machine oil 2 Take down the vent bolt to make all the machine oil removed Warning Avoid inhale the oil steam eat or touch the machine oil long time 3 Clean the vent bolts and install if the seal ring has bro...

Page 159: ...it every 250 hours Replace the filter of the machine oil for YC25 2 type 1 Clean the area which around the base of the filter take down the filter of the machine oil clean the surface of the base 2 Lubricate two seal gaskets which lie in the right of the filter 3 Before install the filter it need wipe the machine oil on the surface of the seal gasket 4 Install the filter as the manufacturer s requ...

Page 160: ...hours or everyday 1 Take out the dust tank 2 Clean the dust tank Warning The dust will enter the engine if it checkd cleaned or replaced when the engine running and destroy the engine Stop the engine before do the operations It is dangerous when it use the compressor and the dust fly out It need wear the glasses the veil and so on 2 Replace the filter core It need replace when the core cleaned exc...

Page 161: ...ake pipe has the fray the pipe destroy the clip loose or the pipe break and so on Replace the pipe and the clip if it necessary to make sure the intake system not leak Other Maintenances of The Engine Warning No maintenance when the engine runs If it must do the maintenance before the engine runs it need have more than two persons to operate and operate as follow Must have one person sit on the op...

Page 162: ...arplug when do the maintenance and in the noise long time Check the belt of the fan tension After 50 hours do the first checking Then check it every 100hours It must use the right tension of the belt to assure the engine working and the belt s use life About the right tension of the belt between the belt wheel of the fan and belt wheel of the engine it throw 110N to the belt by upright the sinkage...

Page 163: ...e paper to check it Warning For avoid hurt it does the maintenance only after the hydraulic oil cool or before working everyday When Take down the flange cover of the sprue it need turn the cover slow and release the pressure to avoid the oil spurt out 1 Check the level of the oil of hydraulic pressure tank Check it every 10 hours 1 Stop the machine on the road 2 Start the engine and make the oil ...

Page 164: ...the oil leveler and when the temperature up the level will arrive the top of the oil leveler 2 Vent the water and the dust of the oil tank Vent the water and the dust of the oil tank every 250 hours 1 Vent the air of the oil tank after stop the machine and the temperature down or before start the machine everyday 2 Loose the oil drain valve which lie in the bottom of the oil tank or the oil drain ...

Page 165: ...ver slow and release the pressure to avoid the oil spurt out 3 No allow the water the dust the soil into the oil tank when it replaces the oil Steps for replace the oil 1 Stop the digger to the level road 2 Loose the nut of the oil tank cover assembly see Open the flange and the air filter see together don t drop the filter of the oil return 3 Prepare a container which the capacity is 60L the pump...

Page 166: ...er from the sprue No let the dust drop into the inside of the oil tank Take down the parts of the filter clear the impurity of the inside and clean the parts with the diesel oil then install it again 9 Install the oil absorbent filer into the flange see then immit the new oil which as the hydraulic oil choose request and the Cleanness not exceed NAS6 grade arrive the view area of the oil leveler C...

Page 167: ...e air which between the pump and the hydraulic oil the pump also has the high temperature C Vent the air which in the oil tank 1 Under the engine runs with the low speed draw throw out the oil tank to the part 4 5 times which the end of the driving about 100mm It mustn t draw throw out to the end 2 Then operate the oil tank to the end of the driving 3 4 times 3 Last operate the oil tank to the end...

Page 168: ...about two times Caution If it doesn t vent the air which in the motor it maybe destroy the bearing of the rotating motor E Vent the air which in the driving motor when it vent the oil from the shell of the driving motor 1 Run the engine with low speed loose the blowoff cock If the right oil outflow screw the bolt 2 Run the engine with low speed make the operation device rotating 900 and let it lie...

Page 169: ...er finish the operation stop the engine It need lay up the machine 5 minutes before start the operation to clear the air bubble of the oil tank 3 It shouldn t leak when checking Wipe the oil which spill over 4 After the operation check the level of the oil If the level of the oil low it need supply it 5 Replace the filter core of the oil return Replace it every 500 hours The filter of the oil retu...

Page 170: ...the nozzle of the flange 7 Install the spring on the top of the lever 8 Adjust the base of the spring make the gap which the base of the spring with the cover of the flange not exceed 10mm and use the nut which under it lock and fix 9 Install the O seal ring 10 Install the cover of the flange Press the convexity into the hole which in the top of the lever screw down the nut 6 Replace the filter co...

Page 171: ... magnet No allow the dust and the water into the filter shell 6 Screw down the filter shell and the filter head with the moment 25 35Nm 7 Connect the pipeline and start the engine slow And run 3 5 minutes vent the air 8 Place the machine on the level road stop and check the level of the oil It can supply the oil if it necessary No let the oil over the highest limit The replace period of the hydrau...

Page 172: ...ammer request when use the hydraulic hammer 7 Check the pressure of the system Check it every 500 hours 1 It adjusts and checks the pressure after the temperature of the hydraulic oil arrive 500 C 2 Use the manometer with the flexible pipe The measurement of the manometer is 0 30Mpa 3 Connect the manometer with the direct head M10 1 to the piston pump see the picture 4 Detect the pressure adjust v...

Page 173: ...cture the accumulator connect the manometer with the direct head and M10 1 The measurement of the manometer is 0 6Mpa 2 Check the pressure value of the guide oil the value is 3 5 Mpa 0 2Mpa If the value doesn t arrive the request it need adjust the safety valve of the oil valve till arrive the value Caution Please contact the service agent when the pressure of the main loop the bulldozer loop and ...

Page 174: ...her than the perch when it append the distilled water to the accumulator If the level of the electrolyte too high it could leak Check the level of the electrolyte every 50hour If it lack it need append the distilled water A Check the level of the electrolyte from the profile of the accumulator 1 Open the door of the accumulator take down the cover board of the accumulator 2 Use a wet and cleaning ...

Page 175: ...n the level under he perch U L And it can use the saleratus to counteract the liquid then use lot of the water to wash it or contact the agent or Yuchai or the manufacturer of the accumulator B When it couldn t Check the level of the electrolyte from the profile of the accumulator 1 Open the door of the accumulator take down the cover board of the accumulator 2 Take down the cover of the accumulat...

Page 176: ...n it use the indicator to check the level of the electrolyte 2 Check the acidity of the accumulator and the electrification state The content of the acid is 1 28g cm3 in 200 C when the accumulator in the right state of the electrification For make sure to start the engine has a good working condition it need the accumulator in the protect electrification state Avoid the accumulator freeze when it ...

Page 177: ...ctrification time Then use the above value of the current to electricize 15 hours If the specific gravity of the 6 single electrolyte between 1 24 1 29 over the electrification For make sure to connect the accumulator and the cable it need fixing better and use the acidproof Vaseline to wipe the electrode Caution Fix too loose or too tight will destroy the accumulator No close the fire ...

Page 178: ...ngine It will make scald It must wait the oil cool before start Loose the vent bolt two or three it can take down the bolt after release the air pressure It is dangerous to take down the bolt fast Check it every 250 hours 1 Prepare a inside hexagon spanner 2 Stop the digger on the level road 3 Turn the driving reducer make the two bolt of the outboard in a position see the picture then stop the ma...

Page 179: ...iving reducer make the bolt in b position see the picture 3 Vent the oil when the oil of the reducer in the hot state Caution Don t let the hot oil scald 4 Loose the bolt and vent the oil and loose the bolt make vent the oil complete 5 Turn the driving reducer make the bolt in a position 6 Append the oration lube thought the sprue till the check hole of the level has the oil out 7 Screw down and t...

Page 180: ...ter runs 50 hours check it the first time Then check it every 500 hours The tighten moment is 150 10Nm for the bolt which connect the reducer the base and the drive wheel B Fixing check for the connect bolt of the rotating reducer After runs 50 hours check it the first time Then check it every 500 hours The tighten moment is 195 250Nm for the reducer and the bolt of the platform ...

Page 181: ...it finds the bolt looses it need screw it down and clean the thread additive which for lock and fix of the bolt And wipe the additive again then screw down it with the tighten moment which requested If it need to replace the bolt it must use the same bolt 2 Check the level of the machine oil for the carrier roller and leading roller Check it every 1000 hours 1 Take out the nut of the carrier rolle...

Page 182: ... tank to uplift the foreside of the digger a of the picture 1 4 Adjust the tension of the pedrail to make the A which between the middle part of the support roll and the flexibility is 10 15mm 5 Take down each cover of the pedrail frame b of the picture 1 show up the sprue of the tension device of the picture 2 6 For loose the pedrail first loose the tie in picture 2 to make the lube out till the ...

Page 183: ...knock the tension spring of the pedrail The spring will rupture when it bear the large pressure And hurt the person Don t take down the spring when it in pull state Warning Don t take down the screw of 4 It can hurt the valve and somebody ...

Page 184: ...e part of the rotating support roller 13 The parts of the lever s oil tank end 3 Part of the top deflecting oil tank 14 Joint of the moving arm and the platform 4 Joint of the top bulldozer s oil tank 15 Joint of the lever and the moving arm 5 Joint of the bulldoze and the support s 16 Part of the top moving arm oil tank 6 The parts of the bulldozer s oil tank end 17 The parts of the moving arm s ...

Page 185: ...Hydraulic Digger 5 55 9 Joint of the connect lever and the bucket 10 Jont of the rocker and the connect lever and oint of the top from the bucket s oil tank 11 The parts of the bucket s oil tank end ...

Page 186: ... screen must clean often Otherwise the dust will stop the dust screen and make the air not thought the heat exchanger 2 It should close the water warming valve when it uses the refrigeration system in summer and use the draft system in spring and autumn When it use the warming up system it should open the water warming and turn the air condition s switch to OFF 3 The core of the caliduct connect t...

Page 187: ...rigerating agent is easy to frostbite the skin And it emit the poisonous gas and light when the refrigerating agent near the fire It need make sure the refrigerating agent no spray to the skin and the eyes when it need to take down the refrigeration system It should let it out then take down it No fire If the machine short of the refrigeration agent that the cooling performance will worse Check th...

Page 188: ...and the compressor belt wheel and check the deflexion about 4 5 mm Check whether the belt destroys It need to replace when the belt pulled no adjust value or the belt has the rift B Adjust Loose the bolt see the picture use the tommy bar to open the compressor adjust the belt to the suitable tension And screw down the bolt If it necessary it can loose the two bolts which for fix the compressor ...

Page 189: ... 2 Belt of air condition The tension and fray 3 Pipeline If fray or rupture 4 Tie in If fray of leak 5 Electric fan Whether run normal 6 Line If fray burn 7 Condensator If has the dust stop 8 Electromagnetism clutch If slip 9 Compressor If has the noise 10 Value of refrigeration agent If the view mirror has the air bubble 11 dust screen If stop ...

Page 190: ...en stop the engine and let all the joy stick locked It need use the guard to avoid the axes out Replace the gear 1 Make the base device of the bucket on the stow wood for take down the axes Check whether the operation device stay the tranquilization state and the bucker place level Then push up the safety lock of the left control box then stop the engine 2 Put the metal stick which the diameter sm...

Page 191: ...lease wash it at any moment if it dirty Warming If it touches the joy stick unguarded the operation device or the machine will move and lead the accident So it must place the machine on the hard and smooth road before take down the plastic cushion It must uplift the guide safety handle and the top control box to lock the guide system before the operator leaves the seat The step for washing the pla...

Page 192: ...Hydraulic Digger 5 62 3 Use the clean mop to clean the floor 4 After the plastic cushion dry take back ...

Page 193: ...ire burn It need to replace the fuse when the fuse rust or cam see the white powder or the fuse loose in the base of the fuse Caution 1 It must close the switch of the power supply and the start switch of the engine before replace the fuse 2 Need the fuse with the same capacity to replace ...

Page 194: ...Hydraulic Digger 6 1 6 Attachment Manual ...

Page 195: ...nt sale company supply new one It need install the necessary foreside mantle that according to the circs of the attachment The libration noise cause the colleague difficult communicates the operation purpose It needs to seed a compere and fix on the signal before operating Don t rotate the machine when the attachment has overload It is very dangerous that doing this operation on the slop The fores...

Page 196: ...hain block when upgrade or carry the heavy object exceed 25kg Need support the part when take down the heavy parts Caution the barycenter when use the chain block It is dangerous to use the chain block for overload It need have a plank to make sure the state safe Make sure the steady state that can not overturn when place the attachment which take down or install Don t walk under the chain block w...

Page 197: ...e pressure of the hydraulic pipe laying 4 Lock the rotary valve which connect to the leading in tube and outlet pipe of the lever side after make sure the oil temperature down 5 Take down the soft pipe which in the side of the attachment twist the combination gasket of the bulkhead cover to the leading in tube and the outlet pipe 6 Take down the attachment thought take down the axes and then insta...

Page 198: ...emperature down No let the dust soil touch the tie in of the soft pipe If the combination gasket destroy replace the new one 4 Connect the soft pipe of the side on the attachment Check the flux of the oil and don t connect it in a wrong way 5 Unlock the rotary valve which connect to the leading in tube and outlet pipe of the lever side 6 After install the attachment it need make sure the oil level...

Page 199: ...rush hammer 1 User manual of the hydraulic crush hammer The hydraulic crush hammer is the familiar attachment 1 Make sure the direction of the hammer top plumbs the surface of the object when the machine do the crush operation and keep it at any moment If it has the gradient with the surface of the object the hammer maybe slips by itself And will lead the hammer mangle and affect the piston Please...

Page 200: ...e wallop on one surface continuous it need to change the impact part and near the edge of the object to crush 4 Use the hammer to impact the surface suitable avoid no resistance use the wallop Stop use the crush hammer to impact when the rock or the object crushed If not stop it will lead the bolt of the main body loose and mangle 2 Operate tabu of the hydraulic crush hammer For the machine has lo...

Page 201: ...it should keep the rest about 5cm 1 Push the heavy thing or the big block use the crush hammer 2 Use the rotating operation 3 Move the hammer when do the impact operation 4 Inflict the wallop on the level ground or upwards ...

Page 202: ...r the crush hammer when it penetrate the rock 6 Peck operation 7 Operate it in the water or the muddy ground 8 Use the crush hammer hang the heavy thing 9 Throw out the oil tank of the bucket to make the machine leave the ground ...

Page 203: ...ast replace tie in 1 Install the bucket 1 Use the tommy bar to prize 2 Put the axes of the bucket into the down the tommy bar and the bucket installed 2 Take down the bucket 1 Use the tommy bar to prize 2 Take down the bucket ...

Page 204: ...e loose and the soft pipe break or leaks oil Hydraulic pipeline of the crush hammer High pressure vitta Screw down the part which loose Replace the broken part 3 Lubricate Use the lube 10ml t before the operation and after operate 2 3hours Immit the lube 5 10times Immit the lube thought the sprue which in the foreside of the crush hammer 4 Check the capacity of the hydraulic oil and the pollution ...

Page 205: ...Hydraulic Digger 6 12 observe whether the color changes If the oil worse please vent the oil and clean the oil tank Immit the new oil ...

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Yuchai YC25-8, User Manual

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