Operational Checkout Procedure
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Use this procedure to check all systems and functions on the machine. It is designed so you can make a quick check of machine operation while doing both a walk-around inspection and performing specific checks from the operator's seat.
Should you experience a problem with your machine, you will find helpful diagnostic information in this checkout that will pinpoint the cause. Use the table of contents to help find adjustment procedures. This information may allow you to perform simple repairs yourself, reducing machine down time.
The information obtained after completing the operational checkout will allow you or your authorized dealer to pinpoint a specific test or repair needed to restore the machine to specifications.
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A location will be required which is level and has adequate space to complete the checks. No tools or equipment are needed to perform this checkout.
Complete the necessary visual checks (oil levels, oil condition, external leaks, loose hardware, linkage, wiring, etc.) prior to doing the checkout. The machine must be at operating temperature for many of the checks.
Locate the check to be performed at the top of the left column and read completely down the column before performing the check. Follow this sequence from left to right. In the far right column, if no problem is found, you will be instructed to go to next check. If a problem is indicated, you will be referred to either a group in this manual or to your authorized dealer for repair.
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OUO1043,00001E9 -19-05NOV03-1/1
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Gauge and Indicator Check with Engine Off
Monitor Indicator Lights and Alarm Checks
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Turn key switch to BULB CHECK position and hold.
LOOK:
Are all monitor indicator lights on? Is STOP light ON and does alarm sound?
NOTE:
Starting motor MUST NOT operate.
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YES:
Go to next check.
NO:
Check monitor and alarm fuses. If motor starts and bulb check position is OK, key switch has failed or there is a short in wiring. See your authorized dealer.
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FNR, Neutral Start Circuit and Reverse Warning Alarm Checks
FNR Switch Check
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Engine off.
Move FNR lever to forward (F), reverse (R), then neutral (N) position.
FEEL:
Observe and feel forward, neutral and reverse detents.
Turn key switch to ON position. Move FNR lever into forward and reverse.
Did you hear a "click" from the neutral start relay behind right side of dash panel pedestal as FNR lever was moved?
Go to next check.
If no "click", inspect neutral start relay or see your authorized dealer.
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Start Circuit Check
Move FNR lever to neutral (N) position and turn key switch to START position.
Observe and listen to monitor as engine is cranking.
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Reverse Warning Alarm Check
Key switch ON.
Move FNR lever to reverse (R) position.
Does reverse warning alarm sound?
Go to next check.
See your authorized dealer.
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Park Brake, Charge Indicator Light, Tachometer/Hour Meter Circuit and Engine Speed Control Linkage Checks
Park Brake Indicator Check
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Engine Speed Control Knob Linkage Check-If Equipped
Engage park brake.
Put FNR lever in neutral and start engine.
Move speed control knob to fast idle position.
LOOK:
Does speed control lever remain at selected position?
(S.N. -882699) See Adjust Engine Speed Control Linkage (Section 3-8) or see your authorized dealer. (S.N. 882700- ) See your authorized dealer.
Go to next check.
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Engine Speed Control Pedal Linkage Check
Depress speed control pedal
Does engine speed stay the same as with speed control knob in fast idle position?
Go to next check.
(S.N. -882699) See Adjust Engine Speed Control Linkage (Section 3-8) or see your authorized dealer. (S.N. 882700- ) See your authorized dealer.
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Brake System Checks
Pedal Stop Check
Lift left and right brake pedals.
LOOK:
Are brake pedals against pedal stop screws?
NOTE:
This ensures that brake check valves are opened and brakes released.
Go to next check.
Adjust brake pedal stops. See your authorized dealer.
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Brake System Leakage Check
Depress and hold left brake pedal, then right brake pedal, using approximately 267 N (60 lb force).
LOOK:
Brake pedal must NOT feel spongy (caused by air in system). Does pedal settle more than 25 mm (1.0 in.) per minute?
Go to next check.
Bleed brake system. See Bleeding Service Brakes (S.N. -880907) or Bleeding Service Brakes (S.N. 880908- ) (Section 4-1) or see your authorized dealer.
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Brake Drag/Park Check
Position machine on a gradual slope with front of machine downhill.
Lift bucket so it clears ground.
Shift FNR lever to neutral, differential lock control up, disengage park brake and release service brakes.
Let machine coast freely for several feet. Apply park brake.
LOOK:
Did machine stop?
Release park brake.
LOOK:
Did machine move or coast freely?
NOTE:
If machine does not move freely on slope, drive the machine for five minutes. Feel axle housing area to locate which brake is dragging.
Go to next check.
See your authorized dealer.
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Steering System Checks
Steering Check
Raise loaded bucket to place added weight on front wheels.
Operate engine at approximately 1000 rpm.
Turn steering wheel from full left to full right several times.
LOOK:
Did front wheels move smoothly in both directions?
LOOK:
When steering wheel was stopped, did front wheels stop moving?
NOTE:
Internal leakage or a sticking steering valve spool can cause wheels to continue to move after steering wheel is stopped.
Go to next check.
See your authorized dealer.
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Steering Leakage Check
NOTE:
Hydraulic oil must be at operating temperature.
Run engine at slow idle. Turn steering wheel until wheels are in maximum right turn position. Continue turning steering wheel, using approximately 11.3 N·m (100 lb-in.) force while counting steering wheel rpm.
Repeat leakage check turning steering wheel to the left.
LOOK:
Did steering wheel turn 5 rpm or less to the left or right? This represents acceptable steering wheel movement during normal operation.
Go to next check.
If steering wheel turns more than 5 rpm, verify whether valve or cylinder is leaking. See your authorized dealer.
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Steering Priority Valve Check
Operate engine at slow idle.
Turn steering wheel to stop left and right. Note effort required to turn wheel.
Turn wheel to stop and apply constant pressure.
LOOK/FEEL:
Does wheel stop at both axle stops and require normal steering wheel effort?
LOOK/LISTEN:
Does tachometer (if equipped) decrease in rpm or does engine rpm decrease when steering wheel is held against stop?
Go to next check.
Steers hard and no decrease in engine rpm. See your authorized dealer.
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Transmission Neutral Disconnect Circuit Check
Neutral Disconnect Circuit Check
CAUTION:
Machine will move forward as FNR lever is moved.
Start engine; set idle speed at approximately 1/3 throttle.
Put transmission in fourth gear.
Release park brake.
Shift FNR lever to forward (F) position.
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Driving Checks
Transmission Shift Linkage, Synchronizer and Noise Check
IMPORTANT:
Press button on gear shift lever when shifting gears.
Run engine at approximately 1/2 throttle with FNR lever in forward (F) position.
Shift transmission into each gear and drive for a short distance.
Can excessive gear noise be heard when shifting between gears?
Go to next check.
See your authorized dealer.
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Differential Lock Check
Raise rear of loader onto floor stands so rear wheels are off ground.
Unlock brake pedals. Turn MFWD switch off (if equipped).
Operate machine at approximately 1/2 throttle in 1st forward.
Depress differential lock control.
Apply one brake pedal.
LOOK:
Both wheels must stop.
Go to next check.
See your authorized dealer.
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Differential Gear and Pinion Check
Shift transmission to first gear and operate engine at approximately 1/2 throttle.
Move FNR lever to forward (F) position.
Steer machine in a maximum left turn and depress left brake pedal to stop the left wheel.
Steer machine in a maximum right turn and depress right brake pedal to stop the right wheel.
Can excessive gear noise be heard in the differential or pinion gear area?
Go to next check.
See your authorized dealer.
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Front Wheel Alignment (Toe-In) Check
Drive machine in fourth gear forward on a surface with loose material.
LOOK:
Is material from behind front wheels thrown excessively inward or outward?
Go to next check.
If material is thrown, excessive tire wear will result. See Checking and Adjusting Toe-In (Section 4-1).
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Engine and Torque Converter Check (Without MFWD)
Position machine with loader bucket at ground level against dirt bank or immovable object.
Shift transmission into 4th gear.
Move FNR lever to forward (F) position.
Engage differential lock.
Increase engine speed to fast idle.
LOOK:
Do rear wheels stall?
NOTE:
This test will give a general indication of engine, transmission and torque converter performance.
Go to next check.
If the wheels can be easily stalled. See Engine or Transmission in Miscellaneous Troubleshooting (Section 4-3). See your authorized dealer if necessary.
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Transmission Hydraulic System Check
Run engine at approximately 1/2 throttle.
Shift transmission into third gear.
Move FNR lever to forward (F) position.
Make several shifts from third forward to third reverse. Start counting the number of seconds when FNR lever is moved to opposite direction.
LOOK:
Is shift from one direction to the other completed in three seconds?
NOTE:
If longer in one direction ONLY, check direction pack.
Go to next check.
See your authorized dealer.
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Mechanical Front Wheel Drive (MFWD) Driving Check
MFWD Switch Check
Push switch to engage MFWD.
LOOK:
Does MFWD light in display monitor come ON when switch is pressed?
Push switch to disengage MFWD.
LOOK:
Is MFWD light in display monitor OFF with MFWD disengaged?
NOTE:
Indicator light in MFWD switch will remain ON while MFWD is engaged. If MFWD is turned OFF while operating, light will go out but MFWD could stay engaged until load on drive train is released.
Go to next check.
See your authorized dealer.
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Engine and Torque Converter Check (With MFWD)
With loader bucket level and cutting edge at the centerline of front wheels, put machine against a dirt bank or immovable object.
Engage MFWD and differential lock.
Place FNR lever in forward position.
Shift gear shifter to first forward.
Increase engine speed to fast idle
LOOK:
Do both rear wheels and both front wheels turn?
Go to next check.
If all wheels stop, a torque converter or transmission control valve problem is indicated. See your authorized dealer.
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MFWD Gear and Pinion Check
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Hydraulic System Checks
Main Hydraulic Pump Performance Check
NOTE:
If hydraulic oil is not at operating temperature, heat oil to 38-52°C (100-125°F).
Put loader bucket flat on ground.
Transmission in neutral, FNR in Forward.
Run engine at slow idle.
Measure cycle time of loader rise to maximum height (including bucket leveling).
LOOK:
Does loader rise to maximum height in 15 seconds or less?
NOTE:
Take the average cycle time for at least three cycles. This time will give a general indication of hydraulic pump performance.
Go to next check.
If cycle time slow, see Hydraulics in Miscellaneous Troubleshooting (Section 4-3) or see your authorized dealer.
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Loader Function Drift Check
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Loader Boom Float Check
Put loader bucket at maximum height position with bucket dumped.
Run engine at approximately 1/2 throttle.
Move the loader control lever forward into boom float detent position, and at the same time into bucket rollback detent position. Remove hand from control lever.
LOOK:
Does loader control lever remain in the boom float detent position?
Go to next check.
If it jumps out of detent, check detent spring and detent balls. See your authorized dealer.
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Loader Return-to-Dig Check
Raise loader bucket to two-thirds maximum height position with bucket dumped.
Run engine at approximately 2/3 throttle.
Move the loader control lever forward into boom float detent position, and at the same time into bucket rollback detent position. Remove hand from control lever.
LOOK:
Does the loader control lever disengage from the bucket rollback detent when the bucket is level?
LOOK:
When the bucket is at ground level, bucket must be level and the bucket indicator pointer must be aligned with mark on the boom pivot.
NOTE:
When return-to-dig is used with loader boom in full up position, the bucket leveling linkage will move the bucket control valve out of return-to-dig position before bucket is actually level.
Go to next check.
Adjust switch until it is activated in cam. See your authorized dealer.
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Bucket Leveling Linkage Check
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Hitch Hydraulic Function Check
Operate machine at approximately 1/3 throttle.
Operate controls to check each hitch cylinder function.
LOOK/FEEL:
Does each cylinder extend smoothly?
LOOK/FEEL:
Does each cylinder retract smoothly?
Go to next check.
See your authorized dealer.
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PTO Function Check-If Equipped
Operate machine at approximately 1/3 throttle.
Operate control to check engagement function.
LOOK:
Does PTO engage and rotate smoothly?
LOOK:
Does PTO disengage and stop rotating?
NOTE:
If machine is started with PTO switch ON, PTO should not operate until switch is cycled.
Go to next check.
See your authorized dealer.
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Check Operation of Accessories (Engine Stopped)
Drive Light Check
Turn key switch to ON position.
Push light rocker switch to middle position.
LOOK:
Are two front lights, two red taillights and gauge lights ON?
Go to next check.
Check fuse and bulbs. Check wiring. See your authorized dealer.
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Work Light Check
Turn key switch to ON position.
Push light rocker switch to upper (WORK) position.
LOOK:
Are two front lights, two red taillights, gauge lights and two rear white lights ON?
Go to next check.
See Fuse Specifications or Remove and Install Halogen Bulb in Miscellaneous Machine (Section 4-1) or see your authorized dealer.
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Turn Signal Check
Turn key switch to ON position.
Push right side of turn signal rocker switch down.
LOOK:
Is right amber light flashing? Does right indicator light on top of steering column flash? Is left light on?
Push left side of turn signal rocker switch down.
LOOK:
Is left amber light flashing? Does left indicator light on top of steering column flash? Is right light on?
Go to next check.
Check fuses, bulbs and wiring. See your authorized dealer.
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Brake Light Switch Check
Key switch in the ON position.
Depress and hold left brake pedal, then right brake pedal.
LOOK:
Rear brake light must come ON when either pedal is depressed with key switch in ON position.
Go to next check.
Check fuse and bulbs. Check wiring. See your authorized dealer.
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Operator Station Checks
Seat Linkage Check
Move lever sideways.
Move seat forward and rearward and release lever.
LOOK:
Does lever move freely and lock seat in desired position?
Go to next check.
Repair linkage. See your authorized dealer.
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Suspension Seat Height Adjustment Check
Turn knob or lift lever to raise or lower seat to desired position.
LOOK:
Does seat move up or down and remain in desired position?
Go to next check.
See your authorized dealer.
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Suspension Seat Swivel Linkage Check
Pull lever forward.
Swivel seat clockwise to stop and release lever.
Repeat steps to return seat to normal forward facing position.
LOOK:
Does seat stop about 15 degrees clockwise from normal forward facing position?
FEEL:
Does lever move freely and hold seat in positions?
Go to next check.
Lubricate or repair linkage. See your authorized dealer.
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Suspension Seat Back Linkage Check
Turn lever to position seat back as desired.
FEEL:
Does lever move freely and hold seat in desired positions?
Go to next check.
Lubricate or repair linkage. See your authorized dealer.
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Miscellaneous Checks
Check Periodic Maintenance Decal
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