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Chapter VI Maintenance of SDTW 0.8T Excavators

Section I Daily inspection and maintenance

S/N

Item

Quantity

Interval (h)

Remark

Check the engine oil level in sump

★

Check the hydraulic oil level in hydraulic oil tank

★

Check the fuel level in tank

★

Check the oil-water separator to completely drain

any water or sediment out.

★

Check if the fuel pipe is leaked or cracked.

----

★

Check if the fuel pipe is cracked or bent.

----

★

Check the work equipment pivots

----

★

Check if the hydraulic hose and the pipeline leak

----

★

Check if the bucket teeth is worn or loosened.

★

Check the seatbelt

★

Check the bolts and nuts for tightening torque

----

●

Check the bolts and nuts for tightening torque

----

Aperiodically

Note:

★

: Maintenance interval under normal conditions

●: Maintenance needed at the first inspection

◆

: Initial 100h

Содержание TW08 MINI

Страница 1: ...ON MAINTENANCE MANUAL HITCHON INTERNATIONAL LTD 32 HAMMERMITH DRIVE CHRISTCHURCH NEW ZEALAND Failure to follow these operating instructions and regularly maintain the excavator in accordance with thes...

Страница 2: ...DTW 0 8T Excavators Section I Basic construction knowledge Section II Preparation for work Section III Operational essentials Section IV Operational precautions Chapter VI Maintenance of SDTW 0 8T Exc...

Страница 3: ...ditching and fertilization in garden vegetable greenhouse agricultural transformation indoor demolition small earthwork civil engineering road recovery basement and indoor construction concrete break...

Страница 4: ...4 Quick hitch Narrow bucket Log grab Mechanical thumb Auger Ripper Rake...

Страница 5: ...5 Section II Main parameters...

Страница 6: ...ortation length 2770 J Overall height 1330 Work range Unit mm A Max digging radius on ground 2850 B Max digging depth 1650 C Max digging height 2610 D Max unloading height 1850 E Max vertical digging...

Страница 7: ...ents swing mechanism control mechanism drive system traveling mechanism and auxiliary equipment as shown in fig 1 1 Mounted on the rotary table full swing base are the main components of the drive sys...

Страница 8: ...r hydraulic energy changed to mechanical energy slewing bearing realizing of wing 3 Boom power route diesel engine coupler hydraulic pump mechanical energy changed to hydraulic energy distributor valv...

Страница 9: ...excavator has a crawler traveling mechanism similar to other crawlers with one hydraulic motor driving one track This excavator adopts a low speed high torque motor When two hydraulic motors run in th...

Страница 10: ...d is easy to unload shortening the unloading time and increasing the effective capacity of the bucket 5 2 2 Structure The bucket shape and size of the backhoe are specific to the material being worked...

Страница 11: ...11 Hydraulic system structure of SDTW 0 8T excavators I Rotary motor...

Страница 12: ...12...

Страница 13: ...o 6 Part No Length Part No mm inch Part No mm inch Part No mm inch Part No mm inch 310 19 0 21373 003 118 1 4 65 8507 003 34 6 1 36 14409 003 138 4 5 45 14409 007 172 4 6 79 Driven gear Lug shaped baf...

Страница 14: ...er sheet OD 60 45 1 3 Seal ring of output shaft OD 63 56 1 4 O ring ID92 87 Shore hardness70 1 5 End seal ring ID 45 72 1 6 O ring ID 6 07 2 7 O ring ID 94 97 2 8 O ring ID 11 2 1 9 Front type seal ri...

Страница 15: ...15...

Страница 16: ...16 Section IV Schematics of main valve Reserved Steering Arm Traveling Front shovel Traveling Boom Bucket...

Страница 17: ...17 Section V Electrical system diagram...

Страница 18: ...d accessible to the driver 3 Easily accessible visual operations In general the operational force on the handle does not exceed 40 60 N and the handle travel does not exceed 17cm 4 The control mechani...

Страница 19: ...eting the preheating process so the machine is then ready to operate Section III Operational essentials 1 Traveling Use the traveling levers 1 Straight Moving the lever forwards or backwards operates...

Страница 20: ...ket should be angled with the soil at 60 thereby increasing work efficiency 2 3 Lower excavation Keep the angle between bucket base and the bevel at 30 and retract the arm to start work 2 4 Upper exca...

Страница 21: ...eling please rest for 5min every 20min to avoid damaging the traveling motor 11 Never operate the excavator on gradients more than 15 degrees to avoid the machine from overturning 12 Take care when re...

Страница 22: ...pletely drain any water or sediment out 1 Check if the fuel pipe is leaked or cracked Check if the fuel pipe is cracked or bent Check the work equipment pivots Check if the hydraulic hose and the pipe...

Страница 23: ...fuel pipe is cracked or bent 7 Change the oil water separator 8 Check the fuel hose for leakage crack 9 Check the fuel hose for crack leakage 10 Change the bucket 11 Connection of bucket 12 Remove the...

Страница 24: ...ots of bucket and connecting rod 10 Others 6 2 Lubrication of slewing bearing 2 3 Lubrication of external meshing gear of slewing bearing 1 Note it is recommended to use the lithium grease Maintenance...

Страница 25: ...the bucket above the ground and then swing the upper structure by 45 degrees 1 8 cycle 7 Lower the bucket onto the ground 3 External meshing gear 45 of slewing bearing every 500h 1 Lower the bucket on...

Страница 26: ...Quantity Interval h 10 50 100 250 500 1000 2000 Engine oil 1 Engine oil filter 1 According to the temperature range during operation select the viscosity of oil listed in the table Recommended engine...

Страница 27: ...rder to take the filter element out 11 Reinstall the new filter and tighten the screws fixing the new element with a screwdriver 12 Remove the oil filter cap to add the recommended oil into the engine...

Страница 28: ...not have your body facing them as the hydraulic parts even if they cool down still have built up pressure d Never try to check the traveling or slewing motor circuits on a slope as they may be pressur...

Страница 29: ...e bucket onto the ground 5 Idle the engine at low speed for 5min 6 Shut down engine and remove the ignition key 8 Check if the oil level in the hydraulic oil tank is between the markers on dipstick an...

Страница 30: ...rized Slowly open the hydraulic oil cap to release the pressure before taking off the cap 12 Clean the filter and inside of the hydraulic tank 13 Use oil pickup pump to suck the oil residue out of the...

Страница 31: ...ay lead to fire or injury 1 Park the machine on the flat ground Lower the bucket onto the ground Shift the pilot switch to lock and turn off the engine Remove the ignition key 2 Check if there are any...

Страница 32: ...eplace it Replace it Tighten or replace the hose or O ring Every 250h Hose surface Hose end Hose surface Hose surface Hose Hose Hose end and joint body Crack 4 Crack 5 Reinforcing material protruded 6...

Страница 33: ...ng fuel or with fuel system working 6 Pay attention to the fuel scale Add the fuel as necessary Important keep any dirt dust water or other foreign material from getting into fuel system 7 While filli...

Страница 34: ...n clothes or even cause blindness Therefore take the following steps to avoid any risk 1 Refilling of the battery should be done in a well ventilated area 2 Wear on goggles and plastic gloves 3 Care m...

Страница 35: ...ct the new one to machine If needed replace the bucket and connect the new one to machine Adjust the connecting rod of bucket 1 If needed Take down the traveling lever 2 If needed Check and replace th...

Страница 36: ...below 3 Remove bucket pins A and B to separate the bucket and the arm Clean the pin and its pin hole and then properly grease them 4 Adjust the arm and the new bucket correctly and make sure the buck...

Страница 37: ...mponents N m Thread dimensions Recommended torque M16 bolts fixing the traveling motor 252 39 2 M16 bolts fixing the sprocket 252 39 2 M20 bolts fixing the slewing bearing 570 60 M20 bolts fixing the...

Страница 38: ...Freezing cold Fuel use high grade fuel suitable for low temperatures Lubricant use hydraulic oil and engine oil with low viscosity Battery keep the battery fully charged and maintain it regularly The...

Страница 39: ...o less than 1mm Bucket teeth have dropped during operation 1 Deformed spring and weakened elasticity of bucket tooth pin 2 Unmatched bucket tooth pin and seat Change the bucket tooth pin The crawler h...

Страница 40: ...components of the whole machine adjust the fit clearance and pressure of hydraulic components The blocked engine filter causes serious decrease of loaded rpm and even flames out Change the element Th...

Страница 41: ...rod and bucket works powerlessly Serious internal leak of multiway valve or sandstone inside it Change Low overloaded pressure Adjust Serious internal leak of oil cylinder Change the oil seal The mai...

Страница 42: ...sand hole on valve body due to casting which causes one way action or linked actions Change The rotation mechanism moves even it is operated Main valve rod spring breaks Change The excavator makes abn...

Страница 43: ...ue of fault diagnosis 1 Low battery Battery voltage Color of charge state densimeter Above 12V Green if it is white change the battery 2 Fuse F1 and F11 fail In case the fuse is burnt out the GND fail...

Страница 44: ...gine to OFF as preparation and keep it at OFF during diagnosis Resistance Below 1 9 Poor GND of wire harness contact with earth circuit Turn the start switch of engine to OFF as preparation and keep i...

Страница 45: ...epair ignition switch and inspect and repair the starter 6 Long period operation of the battery may increase the internal resistance so it is necessary to repair the battery and correctly charge the b...

Страница 46: ...hange the fuel filter 2 Inspect and change the air filter element 3 Inspect and adjust the fuel pump 4 Inspect the fuel tube and oil channel to ensure unblocked oil supply 5 Inspect the starter and st...

Страница 47: ...y terminal and connector 3 Repair the battery earth wire 4 Inspect the start circuit and ensure the terminal of the starter is live 5 Inspect starter electromagnetic relay to eliminate fault of electr...

Страница 48: ...or assembly S N Name Quantity Remark 1 Upper frame assembly 1 2 Lower frame assembly 1 3 Front work equipment assembly 1 4 Slewing bearing assembly 1 5 Connecting shaft between boom and upper frame 1...

Страница 49: ...6 Sprocket nuts 16 7 1 7 Drive wheel 2 8 1 8 Connecting disc 2 9 1 9 Sprocket bolts 16 10 1 10 Bolts fixing the track roller 8 11 1 11 Traveling motor 2 12 1 12 Track roller 4 13 1 13 Idler assembly 2...

Страница 50: ...antity Remark 1 2 1 Welded upper frame 1 2 2 2 Covers of rear housing 1 3 2 3 Covers of left housing 1 4 2 4 Covers of right housing 1 5 2 5 Welded inside support frame 1 6 2 6 Rear counterweight plat...

Страница 51: ...Multiway valve 1 19 2 19 Battery platen 1 20 2 20 Master cylinder 1 21 2 21 Coupler 1 22 2 22 Pump disc 1 23 2 23 Engine 1 24 2 24 Rear bracket base of engine 1 25 2 25 Front bracket base of engine 1...

Страница 52: ...3 8 Bucket cylinder 1 9 3 9 Medium shaft of boom 1 10 3 10 Rear shaft of arm cylinder 1 11 3 11 Front shaft of arm cylinder 1 12 3 12 Front shaft of boom 1 13 3 13 Rear shaft of bucket cylinder 1 14...

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