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Problem
Main causes
Remedy
Even if the joystick (steering, direc-
tional and gear shift lever) is operat-
ed, machine does not move off.
Parking lever is in LOCK position.
Set to FREE.
Charge pump is worn or scuffed.
Check, replace. (*)
Brake release solenoid does not op-
erate.
Check, repair, replace. (*)
Defective joystick (steering, direction-
al and gear shift lever)
Check, replace. (*)
Fan is set in reverse mode.
Set it to normal rotation mode.
Turbo protect function in operation
Wait until operation finishes.
Only one side of track shoe moves.
HST pump is defective.
Check, replace. (*)
Electrical system is defective.
Check, repair, replace. (*)
Machine deviates without steering
operation.
Defective joystick (steering, direction-
al and gear shift lever)
Adjust, check, repair. (*)
Defective HST pump and motor
Adjust, check, repair, replace. (*)
Defective motor speed sensor
Adjust, check, replace. (*)
Hydraulic oil temperature is low.
Warm-up.
Air is mixed in hydraulic circuit.
Bleed air. (*)
Hydraulic oil gets overheat. (Pointer
is in red range.)
Work load is too large.
Lighten the work load to prevent trav-
el relief.
Work equipment is relieved.
Avoid operating the blade to the
stroke end of cylinder.
Continuous high-speed travel
Drive in lower speed range.
Clogged oil cooler fins or damaged
fin
Clean or repair. See WHEN RE-
QUIRED.
PHENOMENA AND ACTIONS FOR ENGINE RELATED PARTS
• Contact your Komatsu distributor for the remedies indicated with (*) in the remedy column.
• Ask your Komatsu distributor for repairs for problems or causes which are not listed below.
Problem
Main causes
Remedy
After warming up, when engine
speed is increased, engine oil pres-
sure caution lamp still lights up.
Insufficient oil in engine oil pan (suck-
ing in air)
Add oil to specified level. See
CHECKS BEFORE STARTING.
Improper oil is used. (Viscosity is im-
proper.)
Referring to “RECOMMENDED
FUEL, COOLANT, AND LUBRI-
CANT”, replace oil with proper one.
Clogged oil filter cartridge
Replace. See EVERY 500 HOURS
MAINTENANCE.
Oil leakage due to defective tighten-
ing or breakage of oil pipe or pipe
joint.
Check and repair. (*)
Defective monitor
Replace. (*)
OPERATION
TROUBLES AND ACTIONS
3-217
Содержание D51EX-24
Страница 2: ......
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Страница 57: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
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Страница 277: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
Страница 353: ...SPECIFICATIONS 5 1...
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Страница 367: ...REPLACEMENT PARTS 7 1...
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Страница 382: ...D51EX 24 D51PX 24 BULLDOZER Form No EENAM03560 2017 KOMATSU All Rights Reserved Printed in Belgium 01 2017...