Operational Checkout
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 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. This information may allow you to perform a simple adjustment yourself which will reduce the down time of your machine. Use the table of contents to help find adjustment procedures.
The information you provide 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 design specifications.
A location will be required which is level and has adequate space to complete the checks. No tools or equipment are needed to perform the 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.
Start at the top of the left column and read completely down column before performing 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 section in this manual or to your authorized dealer for repair.
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CED,OUO1079,96 -19-31MAR00-1/1
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Gauge, Indicators and Control Checks (Engine Off)
Monitor Display Window Check
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Engine OFF.
Key OFF.
Press and hold in monitor select button.
LOOK:
Information displayed sequences from Hour Meter symbol to Voltmeter symbol. Back lighting and needle segment is supplied to engine coolant temperature gauge and fuel tank level gauge.
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OK:
Go to next check.
NOT OK:
Check F13 monitor fuse and F12 monitor battery voltage fuse.
NOT OK:
See your authorized dealer.
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Monitor Indicator and Alarm Checks
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Turn key switch to ON position.
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LOOK/LISTEN:
Does the following happen for 5 seconds after the key switch is turned ON?
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All twelve monitor indicators, STOP indicator, and service required indicator must be ON.
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Alarm must sound.
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All 9 segments on engine coolant temperature gauge and fuel level gauge are ON.
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All segments in the monitor display window must be ON.
LOOK:
Does the follow happen 5 seconds after the key switch has been turned ON?
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STOP light must flash OFF and ON.
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Engine oil pressure indicator, engine alternator voltage indicator, and park brake indicator must be ON.
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Hours must be displayed on the monitor display window.
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OK:
Go to next check.
NOT OK:
Check 5 amp monitor (switched) fuse F13.
NOT OK:
See your authorized dealer.
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Engine Oil Pressure, Alternator Voltage, Park Brake and Differential Lock Monitor Indicators Check
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Turn key switch to ON position.
LOOK/LISTEN:
Only engine oil pressure, engine alternator voltage, and park brake indicators must be ON, STOP indicator must flash, and alarm must sound after an approximate three second delay.
Push differential lock button to engage differential lock.
LOOK:
Differential lock indicator must come on and park brake indicator, engine oil pressure indicator, engine alternator voltage indicator, and park brake indicator must be ON.
Turn key to OFF position.
LOOK:
All indicators must go out.
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OK:
Go to next check.
NOT OK:
See your authorized dealer.
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Start engine.
Move shift lever from PARK to NEUTRAL.
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LOOK:
Park brake indicator must go out.
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OK:
Go to next check.
NOT OK:
If engine oil pressure indicator stays ON, STOP ENGINE IMMEDIATELY and check oil level.
NOT OK:
If engine alternator voltage indicator is ON, increase engine speed to 1200 rpm and indicator must go out.
NOT OK:
If park brake indicator does not go out, see your authorized dealer.
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Park Brake Linkage Check
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CAUTION:
Do not operate machine if transmission control and park brake lever locking sleeve does not pass this check. Machine could be pulled out of PARK when dismounting and allow machine to move.
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Hold top of transmission control and park brake lever while in the PARK (brake on) position and try to push lever to NEUTRAL.
LOOK/FEEL:
Lever must not move out of PARK locking notch.
Lift up PARK lock sleeve and shift to NEUTRAL.
LOOK/FEEL:
Spring resistance must be felt and park lock sleeve must move upward allowing lever to move to NEUTRAL.
Release park lock sleeve, hold top of lever and shift through all eight forward and seven reverse gears. While holding top of lever, move to PARK position.
LOOK/FEEL:
Park lock sleeve must not bind when shifting and must move into PARK position notch without being lifted.
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OK:
Go to next check.
NOT OK:
See your authorized dealer.
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Gauge, Indicators, and Control Checks (Engine ON)
Neutral Start Switch Check
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Move shift lever to NEUTRAL position.
Turn key switch to START position.
Engine MUST NOT crank. Secondary steering pump is activated, if equipped.
Go to next check.
See your authorized dealer.
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Park Start Circuit Check
Turn key switch to ON position.
NOTE:
Shift lever must not be removed from PARK until key switch is ON.
Move shift lever to NEUTRAL position.
Turn key switch to START position.
Engine MUST momentarily engage but NOT crank.
Go to next check.
See your authorized dealer.
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Engine Alternator Output Check
Start engine and operate at slow idle in PARK position.
Turn off all accessories.
LOOK/LISTEN:
All monitor indicators and alarms must be OFF except park brake indicator.
IMPORTANT:
Do not operate machine if STOP light is ON or alarm is sounding; machine damage could occur.
NOTE:
If engine alternator voltage indicator comes ON after approximately 3 seconds, increase engine speed to approximately 1500 rpm and light must go out. Due to varying electrical loads it may be normal for light to be ON at slow idle. If oil is cold, it is normal for hydraulic and transmission restriction indicators to be ON until oil warms.
Go to next check.
If engine alternator voltage indicator stays on after engine has been above 1500 rpm, see your authorized dealer.
If any monitor indicator stays ON, see your authorized dealer.
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PARK and NEUTRAL Gear Position Switch Check
Start machine.
Fully depress inching pedal and hold.
Shift SLOWLY through all forward and reverse gears.
Record each gear position as displayed on monitor. Each gear position should display as shown above.
LOOK:
Do gear positions and monitor display match?
Go to next check.
Machine may be in limp home mode. Place machine in PARK, turn key switch OFF, and redo test. If problem still exists, see your authorized dealer.
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Reverse Warning Alarm Check
Turn key switch to ON.
Put transmission in NEUTRAL REVERSE.
Reverse warning alarm must sound.
Go to next check.
Check reverse warning alarm and switch. See your authorized dealer.
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Display Window Function Check
Turn key switch to ON.
LOOK:
Hour meter reading must appear.
Press SELECT button once.
LOOK:
Battery volt reading must be displayed (12-14 volts).
Press SELECT button once.
LOOK:
The letter (P) should be displayed indicating park brake.
Press SELECT button once.
LOOK:
RPM symbol must be displayed.
Go to next check.
No monitor reading displayed, check Monitor Fuse F13 and Monitor Battery Voltage Input Fuse F12.
See your authorized dealer.
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Engine Speed Control Knob Check-If Equipped
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Starting Aid Check-If Equipped
Operate engine at slow idle.
Push starting aid button once.
Engine speed must increase then return to slow idle.
Go to next check.
Check can (A) contents by shaking.
If can has fluid, check starting aid fuse F6.
If fuse is okay, see your authorized dealer.
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Air Cleaner Restriction Indicator Check
Move shift lever into PARK position.
Start engine and run at fast idle.
LOOK:
Air restriction indicator MUST NOT be ON.
Go to next check.
Clean or replace air cleaner element. (See Maintenance-As Required and Maintenance-Every 1000 Hours chapters.)
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Brake System Checks
Brake Accumulator Precharge Check
Run engine at slow idle.
Raise blade to upper stop.
Move shift lever to NEUTRAL.
Lower blade while pumping the service brake pedal as fast as possible until blade raises front of machine.
LOOK:
Park brake indicator must not come ON.
CAUTION:
If indicator comes on with one application of brake, accumulator has lost its gas charge. This may cause park brake to stop machine when service brakes and a hydraulic function are both used at same time.
Check complete.
Brake accumulator precharge is low. See your authorized dealer.
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Service Brake Linkage Check
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Brake Valve Neutral Leakage Check
1. Run engine for 30 seconds to fill brake accumulator.
2. Stop engine.
3. Push service brake pedal (A) at five second intervals 12 times and count the number of times an oil "hiss" is heard as brake is applied.
CAUTION:
If oil "hisses" through brake on only one application, brake accumulator has lost its gas charge. This may cause park brake to stop machine when service brakes and a hydraulic function are both used at same time.
4. Run engine for 30 seconds to fill brake accumulator.
5. Stop engine.
6. Wait three minutes.
7. Push brake pedal at five second intervals 12 times and count the number of times a oil "hiss" is heard as brake is applied.
During step 7, the number of oil "hisses" of the brake valve must be within two applications of pedal as recorded in step 3.
Go to next check.
See your authorized dealer.
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Service Brake Check
Run engine at fast idle.
Operate machine in 3RD FORWARD.
Press service brake pedal (A) to load engine.
Brakes must be able to slow machine until engine is lugged down to approximately 800 rpm.
Go to next check.
See your authorized dealer.
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Park Brake Check-With Winch
Move shift lever to PARK position and differential lock ON.
Run engine at half speed.
Attach winch cable to a stump or other immovable object.
Move winch control lever to the POWER IN position and slide machine backward without holding service brakes.
LOOK:
All four wheels must slide and not turn as machine moves backward.
Go to next check.
See your authorized dealer.
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Park Brake Check-Without Winch
Position machine on gradual slope with front of machine pointed down hill.
Raise blade and grapple, if equipped, off ground.
Move shift lever to NEUTRAL position and differential lock OFF.
Let machine coast freely for several feet. Move transmission control lever to PARK position.
LOOK:
Did machine stop?
Move transmission control lever to NEUTRAL.
LOOK:
Did machine move or coast freely?
Go to next check.
See your authorized dealer.
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Steering System Checks
Steering System Operation Check
Run engine at slow idle in PARK.
Differential lock OFF.
Turn steering wheel until frames hit the right stop and then the left stop.
Observe effort to turn steering wheel.
LOOK:
Frames must steer smoothly in both directions. When the steering wheel is stopped, the frames must stop.
FEEL:
Excessive effort must not be required to turn the steering wheel.
NOTE:
If steering wheel is turned to stop and released, it is normal for wheel to rock back and forth up to 1/3 turn before stopping.
Go to next check.
See your authorized dealer.
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Steering Priority Valve Check
Run engine at slow idle.
Steer machine frames to maximum left position.
Lower stacking blade to ground.
While steering machine to the right, raise stacking blade.
Observe stacking blade.
LOOK:
Stacking blade MUST raise slowly, but steering speed must be normal.
NOTE:
It is normal for steering wheel to jerk or kickback if hydraulic function is moved while steering is held against stops.
Go to next check.
See your authorized dealer.
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Steering Priority Valve Pressure Check
Run engine at slow idle.
Steer unit until frames are straight.
Press differential lock button to engage differential lock.
Steer to left then right.
LOOK:
Steering wheel must not turn more than 1/2 turn in either direction.
Go to next check.
See your authorized dealer.
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Steering System Leakage Check
Run engine at slow idle.
Switch differential lock to OFF.
Turn steering wheel right until frames contact stop.
IMPORTANT:
Steering wheel must be "jerked" to shift steering valve into full flow mode. If wheel is not jerked, wheel will continue to move while slight pressure is exerted on it and simulate a leaking steering valve.
Hold steering wheel against stop, jerk wheel against stop, continue turning steering wheel using approximately 22 N (5 lb force) while counting steering wheel revolutions per minute. Repeat check to the left.
LOOK:
Steering wheel must not turn more than 5 rpm.
NOTE:
Use good judgement; excessive steering wheel rpm may not affect steering function during normal operation.
Go to next check.
See your authorized dealer.
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Secondary Steering System Check-If Equipped
IMPORTANT:
Do not operate secondary steering pump for more than 15 seconds with the steering in neutral or damage to the pump and motor can occur.
Turn key OFF after test or pump damage can occur.
Move shift lever to NEUTRAL.
Park machine on a hard level surface with wheels straight. Stop engine.
Without starting engine, turn key to START position and release. This will start pump when the steering wheel is turned left or right.
Steer machine to right and left.
LOOK:
Machine must steer approximately half-way to stops in both directions.
Secondary steering indicator and STOP indicator must come on and alarm must sound.
Go to next check.
See your authorized dealer.
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Transmission Cold Weather Disconnect Checks-If Equipped
Transmission Cold Weather Disconnect Clutch Check-If Equipped
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Driving Checks
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