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Problem
Main causes
Remedy
Engine does not start.
(“L04” lights up on monitor.)
Damaged data in the controller
Check, repair. (*)
Other system troubles
Check, repair. (*)
PHENOMENA AND ACTIONS FOR CHASSIS
• For the remedies indicated with (*) in the remedy column, always contact your Komatsu distributor.
• In cases of problems or causes which are not listed below, ask your Komatsu distributor for repairs.
Problem
Main causes
Remedy
Speed of travel, swing, boom, arm,
bucket is slow
Lack of hydraulic oil
Set oil to specified level. See
CHECKS BEFORE STARTING.
Pump generates abnormal noise.
(sucking in air)
Clogged element in hydraulic tank
strainer, lack of oil
Clean. See EVERY 2000 HOURS
MAINTENANCE.
Excessive rise in hydraulic oil temper-
ature
Dirty oil cooler
Clean. See EVERY 500 HOURS
MAINTENANCE.
Lack of hydraulic oil
Set oil to specified level. See
CHECKS BEFORE STARTING.
Track comes off.
Track too loose
Adjust track tension, see WHEN RE-
QUIRED.
Abnormal wear of sprocket
Track too loose
Adjust track tension, see WHEN RE-
QUIRED.
Boom rises slowly or does not rise.
Lack of hydraulic oil
Set oil to specified level. See
CHECKS BEFORE STARTING.
Does not swing.
Swing lock switch still applied
Turn swing lock switch OFF.
Swing brake system error
Check, adjust. (*)
When move of machine to safe place
is required, turn the swing parking
brake cancel switch to ON position
temporarily.
PHENOMENA AND ACTIONS FOR ENGINE RELATED PARTS
• For the remedies indicated with (*) in the remedy column, always contact your Komatsu distributor.
• In cases of problems or causes which are not listed below, ask your Komatsu distributor for repairs.
Problem
Main causes
Remedy
Engine oil pressure caution lamp
lights up.
Lowered oil level in engine oil pan
(sucking in air)
Set oil to specified level. See
CHECKS BEFORE STARTING.
Improper oil is used. (Viscosity is im-
proper.)
Replace oil. See METHOD FOR US-
ING FUEL, COOLANT AND LUBRI-
CANTS ACCORDING TO AMBIENT
TEMPERATURE.
Clogged oil filter cartridge
Replace cartridge. See EVERY 500
HOURS MAINTENANCE.
Oil leakage due to improper connec-
tion or breakage of oil pipe or pipe
joint
Check, repair. (*)
Defective engine oil pressure sensor
Replace sensor. (*)
Defective monitor
Replace monitor. (*)
OPERATION
TROUBLES AND ACTIONS
3-273
Summary of Contents for HB365LC-3
Page 2: ......
Page 25: ...LOCATION OF SAFETY LABELS 5 SAFETY SAFETY LABELS 2 5...
Page 348: ......
Page 436: ......
Page 437: ...SPECIFICATIONS 5 1...
Page 441: ...HB365LC 3 SPECIFICATIONS SPECIFICATIONS 5 5...
Page 442: ...HB365NLC 3 SPECIFICATIONS SPECIFICATIONS 5 6...
Page 489: ...REPLACEMENT PARTS 7 1...
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