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9 TROUBLE SHOOTING

Wallenstein Backhoes are designed for light digging and trenching duties. It is a simple and reliable system

that requires minimal maintenance.
In the following section, we have listed many of the problems, causes and solutions to the problems that

you may encounter.

If you encounter a problem that is difficult to solve, even after having read through this trouble shooting

section, please call your local distributor or dealer. Before you call, please have this Operator's Manual from

your unit and serial number ready.

PROBLEM

CAUSE

SOLUTION

No pressurized
hydraulic oil.

Oil filter plugged. Change filter.

Ensure machine is off and cooled
down.

No pressurized
hydraulic oil

Low hydraulic oil level, top up.

Ensure machine is off and cooled
down.

Hydraulic hoses
switched

connection at backhoe switched,
check colour code and match
connections.

Ensure machine is off.

Not enough flow

Flow control set too low, set control
higher for more flow.

Stuck / Damaged /
Mismatched Couplers

Clean or replace couplers, ensure
mating couplers are ball style
couplers

Ensure machine is off and cooled
down.

Check valve stuck

Clean or replace

Ensure machine is off and cooled
down.

Hydraulic hoses
switched

Switch input / output hydraulic
hose connections.

Ensure machine is off.

Low engine speed.

Set engine speed

Cylinders jerk, don't run

smoothly.

Leak in hydraulic
system

Air getting into system, tighten all
hydraulic connections.

Ensure machine is off.

Return springs
collapsed.

Check valve return springs, replace
if required.

Ensure machine is off.

Control may be
damaged.

Call technician, control may need
service or be replaced.

Ensure machine is off and call
hydraulic technician.

Leaking hydraulic hose.

Hose worn or
damaged.

Replace hose.

Ensure machine is off and cooled
down.

Leaking cylinder.

Seals worn.

Call technician, seal replacement
may be required.

Ensure machine is off and call
hydraulic technician.

Hydraulics behave eratically.

mis-matched valve
(open / closed system)

Determine hydraulic system on
tractor, ensure valve system
matches.

Ensure machine is off and call
hydraulic technician / service.

leaking seals

replace seals .

Ensure machine is off and call
hydraulic technician / service.

Counter balance valve
defective

repair or replace valve.

Ensure machine is off and call
hydraulic technician / service.

Control handle does't go to

neutral when released.

CAUTION

Cylinder rods move slowly or

don't move. (main boom,

dipper boom, grapple,

stabilizers).

Boom drifts down.

Содержание GX620

Страница 1: ...OPERATOR S MANUAL Backhoe GE605 GX620 GX720 GX920 GX920XT Document Number Z97103_En Rev Sep 2019 ...

Страница 2: ...with any claim This warranty does not cover the following 1 Normal maintenance or adjustments 2 Normal replacement of wearable and service parts 3 Consequential damage indirect damage or loss of profits 4 Damages resulting from Misuse negligence accident theft or fire Use of improper or insufficient fuel fluids or lubricants Use of parts or aftermarket accessories other than genuine Wallenstein pa...

Страница 3: ...t adapter Street Pads Thumb Kits PTO Pump Kit To activate warranty register your product online at www wallensteinequipment com _________________________________________ Customer s Name _________________________________________ Contact Name _________________________________________ Dealer Name _________ _______________________________ Phone Number _________________________________________ Serial N...

Страница 4: ...ts for safe operation safety equipment housekeeping etc These decals are accompanied by detailed instructions in the owners manual with the decal illustrated along side Informative Decals are generally pictorial with a white background and can vary to the number of panels The decal will illustrate the function of a feature and is accompanied by detailed instructions in the owners manual with the d...

Страница 5: ... MOUNTING 24 4 8 CONTROLS 25 4 8 1 MAIN BOOM CONTROL 25 4 8 4 STABILIZER CONTROLS 25 4 8 2 DIPPER BOOM AND BUCKET CON TROL 25 4 8 3 BOOM SWING VALVE 25 4 8 5 GX920XT EXTENDIBLE DIPPER CON TROL 26 4 9 MACHINE SETUP 27 5 FIELD OPERATION 28 5 1 PREPARE 28 5 1 2 STOPPING THE MACHINE 29 5 1 3 STOPPING IN AN EMERGENCY 29 5 1 4 JOB SITE 29 5 2 BEGIN WORK PROCEDURE 31 5 2 1 DIGGING SITE 31 5 2 2 DIGGING A...

Страница 6: ...tending an extra 24 Safe efficient and trouble free operation of your Wallenstein Backhoe requires that you and anyone else who will be operating or maintaining the machine read and understand the Safety Operation Maintenance and Trouble Shooting information contained within the Operator s Manual The tractor must have a front bucket loader installed before installing the subframe and backhoe The f...

Страница 7: ...t avoided will result in death or serious injury This signal word is to be limited to the most extreme situations typically for machine components which for functional purposes cannot be guarded WARNING Indicates a potentially hazardous situation that if not avoided could result in death or serious injury and includes hazards that are exposed when guards are removed It may also be used to alert ag...

Страница 8: ...s and booms that they are clear of debris prior to starting the machine DO think SAFETY Work SAFELY DO NOT operate the backhoe without the toplink installed Belly mount subframes in particular MUST have the toplink installed between the trac tor and the backhoe Know your controls and how to stop engine and attachment quickly in an emergency Power unit must be equipped with ROPS Roll Over Protectio...

Страница 9: ...tions and of how it works Review the safety instructions with all users annually 5 Thisequipmentisdangeroustochildrenandpersons unfamiliar with its operation The operator should be a responsible properly trained and physically able person familiar with machinery and trained in this equipment s operations If the elderly are assisting with work their physical limitations need to be recognized and ac...

Страница 10: ...orkers Be certain only a properly trained and physically able person will use the machinery A person who has not read and understood all use and safety instructions is not qualified to use the machine An untrained operator exposes himself and bystanders to possible serious injury or death If the elderly are assisting with the work their physical limitations need to be recognized and accommodated 6...

Страница 11: ...sources close to the ear is cumu lative over a lifetime without hope of natural recovery 5 Clear working area of stones branches or hidden obstacles that might be hooked or snagged causing injury or damage 6 Operate the machine only with a tractor equipped with an approved Roll Over Protective Structure ROPS Always wear your seat belt when oper ating the tractor Serious injury or even death could ...

Страница 12: ... so that loads extend directly behind machine when lifting or placing heavy objects 13 When digging or lifting Be aware of overhead obstructions such as Power lines Telephone lines Tree branches Roof overhang Washlines ropes or cables 14 Do not allow riders on this machine at any time There is no safe place for any riders 15 Never carry lift or move people on boom or bucket 16 Alwaysusetwopeopleto...

Страница 13: ...lly tighten all bolts nuts and screws and check that all fasteners are properly torqued 10 When completing a maintenance or service func tion make sure all safety shields and devices are installed before placing unit in service 2 8 TRANSPORT SAFETY 1 Comply with provincial state and local laws governing safety and transporting of machinery on public roads 2 The use of flashing amber lights is acce...

Страница 14: ...arge material on a rotating boom creates a col lision hazard if workers or bystanders are inside the working zone Follow these important points to keep workers and bystanders safe from potential hazards Operator safety zone is in the operators seat Always operate the backhoe controls from the opera tors seat A 3 m 10 radius work zone perimeter should be established and clearly marked with safety c...

Страница 15: ...enter of gravity is closer to the middle of the backhoe making the backhoe more stable during excavating ensure all four wheels are touching the ground for greatest stability swing the boom upside the slope but if swing downside is required do so with extreme caution and swing only as far as necessary to dump the bucket When excavating be aware always lower the stabilizers and bucket if the ground...

Страница 16: ... else to use this Backhoe until such information has been reviewed Annually review this information before the season start up Make these periodic reviews of SAFETY and OPERA TION a standard practice for all of your equipment We feel that an untrained operator is unqualified to use this machine A sign off sheet is provided for your record keeping to show that all personnel who will be working with...

Страница 17: ...l out pressing from the center outwards 6 Small air pockets can be pierced with a pin and smoothed out using the piece of sign backing paper Caution Hydraulic fluid under pressure do not check for leaks with you hand or fingers when the system is pressurized Serious injury will result Concealed hydraulic con nection use caution when removing panels or guards Caution Personal Protection Equipment P...

Страница 18: ...94113 Z94167 Z94244 Z94248 Z94249 Z94113 Z94112 Z94239 The types of safety signs and locations on the equipment are shown in the illustrations that follow Good safety requires that you familiarize yourself with the various safety signs the type of warning and the area or particular function related to that area that requires your SAFETY AWARENESS Think SAFETY Work SAFELY 3 3 SAFETY SIGN LOCATION ...

Страница 19: ...operate controls from the ground Operate only from the operator s seat to prevent unexpected boom movement that can lead to crushing between frame members 6 Do not dig under machine or stabilizers A cave in could result and the machine could fall into the excavation 7 Lower stabilizers to the ground to support machine before starting to dig 8 Do not exceed machine lift capacity Overloading can cau...

Страница 20: ...hydraulic lines which connected to the tractors rear hydraulic ports Optimum flow is 5 gpm gpm range 3 5 6 for GE 5 7 gpm 18 9 26 5 Lpm for GX series Dipper Boom Main Boom Cylinder Stabilizer Leg Cylinder Control Panel Bucket Bucket Cylinder Manual Tube Front tower on GE605 Boom Swing Cylinder s Stabilizer Leg Main Hydraulic Lines Main Frame Slow Moving Vehicle sign SMV Dipper Boom Cylinder Boom S...

Страница 21: ... personal safety and maintaining good mechanical condition that this checklist is followed Before operating the machine and each time thereafter the following areas should be checked off Pre Operation Checklist P Check that the machine is properly attached to the tractor Be sure retainers are used on the mounting pins and mounting hardware is tightened to their specified torque Check all parts for...

Страница 22: ...tractor model specific subframe and is made up of these components 4 point mount left and right braces that extends along the bottom of the tractor and 4 point link mount Belly mount that extends along the bot tom of the tractor to the backhoe 5 Skid Steer Tieback An adaptor plate called a tieback is used to mount the Wallenstein backhoe to a skid steer The tieback mounts to the backhoe al lowing ...

Страница 23: ... backhoe on a different model tractor contact your dealer or the factory for details on the subframe kit for your specific tractor Your model specific subframe comes with installation instructions that illustrate how to assemble the subframe to your tractor and how to assemble the backhoe to the subframe Follow these instructions carefully Never operate the backhoe without the toplink installed WA...

Страница 24: ... couplers are securely seated WARNING Collision Hazard Duringsetup whenoperating the boom and stabilizers ensure the areaisclearofbystandersandoperator is safely positioned see work zone safe zone Run the engine at low RPM and proceed cautiously Be sure to connect to the hydraulic circuit that has a detent to allow for the steady flow of oil WARNING High Pressure Fluid Hazard To prevent serious in...

Страница 25: ...ALVE Boom swing speed This dial sets the flow control valve that controls the amount of oil to the boom swing circuit Turn the dial clockwise to reduce the amount of oil flow and slow the speed of the boom swing Turn the dial counterclockwise to increase the speed of the boom swing 4 8 4 STABILIZER CONTROLS Left Stabilizer Position Right Stabilizer Position This 2 position spring loaded to neutral...

Страница 26: ... down with your foot on the left and hold to extend the boom to the desired position Lift your foot to stop the extender movement Push down with your foot on the right and hold to retract the boom to the desired position Lift your foot to stop the extender movement When done operating the extender control replace the extender foot control cover 3014L003 3014L003 Extender Foot Control Cover Extende...

Страница 27: ...Raising the wheels off the ground will reduce stability and digging depth and will cause unnecessary stress on the stabilizers and backhoe 4 With the feed table in position engage the spring loaded table lock pin to secure the table 5 Turn the discharge chute to the desired position and adjust the deflector as required Follow this procedure to prepare and set up the machine at the work site the ba...

Страница 28: ... can lead to crushing between frame members Do not dig under machine or stabilizers A cave in could result in the machine falling into the excavation Lower front bucket and stabilizers to the ground to stabilize the machine before starting to dig Do not exceed machine lift capacity Overloading can cause structural damage and lead to unsafe operating conditions Position backhoe so that loads extend...

Страница 29: ...or overhangs Power lines can lead to electrocution if the machine gets too close without contacting the line Overhead obstructions can cause a loss of control or tipping from the contact Overhangs can collapse or give way covering the machine or causing it to move as the footing gives way Lifting Objects in addition to the overhead considerations mentioned be aware of people and objects when lifti...

Страница 30: ...bystanders on lookers or unauthorized personnel Stop the machine whenever unauthorized personnel enter the working area Unauthorized personnel can get in the way or get pinched caught by components Do not resume work until the unauthorized people have left Slopes have special placement requirements when locating the machine The machine is designed to carry the operating loads when the frame is ver...

Страница 31: ... careful to follow the exact layout of the dig site These first cuts will act as guides for the remaining cuts so getting the first few cuts as accurate as possible will help in keeping all future cuts in line There are two different methods of digging using the dipper or using the bucket Digging With Dipper 1 Set the bucket at the appropriate angle as shown by profile 2 Set the dipper so the buck...

Страница 32: ...nd wet mucky material will make excavating a straight deep ditch difficult and dangerous so you may have to plan additional measures to prevent trench wall from collapsing Shoring This process uses a support structure for your ditch sides so they do not cave in and injure anyone or undo the digging you have done before the project is complete Examples may be sheets of plywood with posts to support...

Страница 33: ...bility 11 When work in the trench is complete backfill the trench You may want to tamp to pack the soil as it is replaced in the trench For deep trenches backfilling in lifts layers and compacting the material as it is placed will reduce the amount of settling that will occur after the project is completed 12 Replace topsoil as soon as all the spoil has been back filled This will ensure fertile so...

Страница 34: ...swing cylinders or mainframe 5 2 6 HARD GROUND When digging in hard ground it may be necessary to decrease the bucket angle of entry to the point where the back of the bucket almost contacts the ground It may also be necessary to apply downward pressure with the boom 5 2 7 LIFTING The backhoe can be used to lift and place lines pipes or other loads into trenches or excavations The boom lift capaci...

Страница 35: ...ways yield to oncoming traffic in all situations including narrow bridges intersections etc Watch for traffic when operating near or crossing roadways Turn into curves or go up or down hills only at a low speed and a gradual steering angle Make certain that at least 20 of the tractor s weight is on the front wheels to maintain safe steerage Slow down on rough or uneven ground Never allow riders on...

Страница 36: ...ry level and free of debris 9 Place blocks or planks under the stabilizers and bucket 10 Unhook from tractor 11 Stow hydraulic hoses in storage brackets to keep them off the ground 12 Apply a coat of heavy grease to exposed cylin der rams to prevent rusting 13 If the machine cannot be placed inside cover with a waterproof tarpaulin and tie securely in place 14 Store the machine in an area away fro...

Страница 37: ...ts nuts and screws and check that all electrical and fuel connections are properly secured to ensure unit is in a safe condition When completing a maintenance or service function make sure all safety shields and devices are installed before placing unit in service 8 SERVICE AND MAINTENANCE IMPORTANT Do Not over grease Look for this decal on your machine it indicates a grease point and the number o...

Страница 38: ...ATION See Service Record Chart Section 8 1 6 This illustration shows the general location of service points for all models in this manual On a regular basis check all nuts bolts and screws and ensure they are all properly secured On a regular basis check the condition of all hydraulic lines hoses and fittings Replace any that are damaged Re route those that are rubbing pinched or crimped Tighten a...

Страница 39: ...tion just under the foot rest Grease should be applied annually Grease Zerk one shot of grease annually 8 2 2 GX920XT DIPPER BOOM EXTENDER The dipper boom extension features two high strength plastic slides on each side and between the sliding dipper and dipper base These slides feature good abrasion wear properties and therefore do not require any lubri cation Accessible under foot rest Cut away ...

Страница 40: ...t Buckets are available from your dealer in a range of sizes from 9 to 24 depending on the backhoe model See accessories page and your dealer for details The Bucket is held in place with two pins re move pins to replace the bucket Be careful not to damage the pins during removal move the boom so that the bucket is resting on the ground and won t move unexpectedly when released remove retaining bol...

Страница 41: ... or Daily H y d r a u l i c h o s e s f i t t i n g s f r a m e s l i d e S e c u r e f a s t e n e r s G r e a s e P i v o t P o i n t s C l e a n M a c h i n e Check Check Check Check 8 Hours or Daily H y d r a u l i c h o s e s f i t t i n g s f r a m e s l i d e S e c u r e f a s t e n e r s G r e a s e P i v o t P o i n t s C l e a n M a c h i n e ...

Страница 42: ... or replace Ensure machine is off and cooled down Hydraulic hoses switched Switch input output hydraulic hose connections Ensure machine is off Low engine speed Set engine speed Cylinders jerk don t run smoothly Leak in hydraulic system Air getting into system tighten all hydraulic connections Ensure machine is off Return springs collapsed Check valve return springs replace if required Ensure mach...

Страница 43: ... is off and cooled down No pressurized hydraulic oil Low hydraulic oil level top up Ensure machine is off and cooled down Not enough flow Flow control set to low set control higher for more flow Low engine speed Set engine speed Power Pack Engine Issues See trouble shooting section in engine owners manual Boom Doesn t rotate or rotates slowly Trouble Shooting continued ...

Страница 44: ...et Rotation 180 180 180 180 Swing Arc 150 180 180 180 Stabilizer Width Spread 72 74 89 89 Stabilizer Width Transport 41 40 42 42 Operating Pressure 1800 psi 1800 psi 2250 psi 2250 psi Hydraulic Volume Requirements 3 6 gpm 5 7 gpm 5 7 gpm 5 7 gpm Recommended Tractor HP 18 28 HP 18 30 HP 30 60 HP 45 100 HP Recommended Skidsteer Requirements SSQT Mini Skidsteer Mini Skidsteer 30 60 30 100 Main Boom C...

Страница 45: ...5 72 110 155 215 390 570 850 9 19 33 53 80 115 160 290 420 630 17 36 63 100 155 220 305 540 880 1320 12 27 45 75 115 165 220 400 650 970 8 8 N m lb ft Bolt Torque Bolt Diameter A 10 9 N m lb ft M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 M24 M30 M36 5 3 6 10 25 50 90 140 225 435 750 1495 2600 4 2 2 4 7 18 37 66 103 166 321 553 1103 1917 1 8 4 5 9 15 35 70 125 200 310 610 1050 2100 3675 1 3 3 3 7 11 26 52 9...

Страница 46: ...nches Place one wrench on the con nector body and with the second tighten the swivel nut to the torque shown The torque values shown are based on lubricated connections as in reassembly Tube Nut Size Torque Recommended Size Across Value Turns To Tighten OD Flats After Finger Tightening in in N m lbf ft Flats Turn 3 16 7 16 8 6 1 1 6 1 4 9 16 12 9 1 1 6 5 16 5 8 16 12 1 1 6 3 8 11 16 24 18 1 1 6 1 ...

Страница 47: ... a spin around seat EasilyboltsontheGE605 forsafeandcomfortable operation Features include adjustable height and forward folding seat when not in use For use on hard surfaces pavement cement etc Helps to prevent damage from the grippers on the stabilizer feet while working the backhoe Addsagrippingclawtoyourbackhoe makeseasy work when moving cement chunks large rocks posts or large items too heavy...

Страница 48: ...pins Bt7240 Vertical stabilizer kit GX720 920 920XT With the vertical stabilizer kit you can dig closer to objects such as buildings and foundations while maintaining stability Replaces existing stabilizers PT300 3 point Cat I hitch kit GX620 720 920 920XT PT322 3 point Cat II hitch kit GX720 920 920XT Turn your tractor into a backhoe with the simple 3 point hitch mount The 3 point hitch also util...

Страница 49: ...VALVE 24 DRAGGING 34 F FRONT LOADER 34 G GREASE POINT 37 38 H HEARING LOSS 11 HIGH CENTER OF GRAVITY 27 HORSEPOWER 22 HYDRAULIC CONTROLS 25 HYDRAULIC FLOW 22 J JARRING 32 34 L DECAL INFORMATION 4 LIFT CAPACITY 34 LIFTING OBJECTS 30 LOWER CENTER OF GRAVITY 27 M MAIN BOOM CYLINDER 20 MAIN BOOM PIN LOCK 20 MAIN FRAME 20 MAIN HYDRUALIC LINES 20 MANUAL TUBE 20 O OBSTRUCTIONS 12 ORIENTATION 6 OSHA 16 OV...

Страница 50: ...OPES 30 SLOW MOVING VEHICLE SIGN SMV 20 SMOOTH THE SURFACES 30 SPECIFICATIONS 44 STABILIZER LEG 20 STABILIZE THE TRACTOR 27 T TAG LINE 34 TIP HAZARD 15 TRACTOR WEIGHT 22 TRANSPORT MODE 13 U UNDERCUT 15 UNDERGROUND 30 UNDERGROUND UTILITES 15 W WARNING 7 WORKING INSIDE A BUILDING 30 WORK SITE LAY OUT 30 WORK ZONE 14 ...

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