Komatsu PC110R-1, Operation & Maintenance Manual

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122
TROUBLESHOOTING
3.14.4.2 HYDRAULIC SYSTEM
TROUBLE CAUSE REMEDY
Pump emits an abnormal noise:
•
No oil in the tank.
•
Faulty pump.
•
Hydraulic oil unsuitable for the tem-
perature.
•
Repair or change.
(•)
Repair or change.
•
Change.
Equipment control levers do not return
automatically to neutral position:
•
Broken return spring or seized ele-
ment
(•)
Change spring or distributor ele-
men
Equipment moves only at low speed:
•
Faulty pump.
•
Max. pressure valve setting incor-
rect, or valves not closed due to im-
purities.
•
Dirty drain filter.
(•)
Repair or change.
(•)
Set or change.
•
Change