Other Troubles; Electrical Circuit; Hydraulic System - Komatsu SK818-5 Operation & Maintenance Manual

TROUBLESHOOTING

3.15.4 OTHER TROUBLES

(•) Always contact your Komatsu Dealer when you have to carry out this operation.
• If the anomaly or its cause are not included in the failures indicated below, contact your Komatsu Dealer for the
necessary repair.

3.15.4.1 ELECTRICAL CIRCUIT

TROUBLE
Lights do not work satisfactorily even
with engine running at high speed
Lights come on intermittently with engine
running
Alternator charge warning light does not
go out with engine running and increa-
sing speed
Alternator emits an abnormal noise
Starter does not turn with key in START
position
Starter pinion engages and then disen-
gages
Starter makes engine run slowly
Starter disengages before engine has
started
Engine oil pressure warning light does
not come on when engine is stopped
(ignition key in position « »):
Alternator charge warning light does not
come on when engine is stopped (igni-
tion key in position « »):

3.15.4.2 HYDRAULIC SYSTEM

TROUBLE
Pump emits an abnormal noise
Equipment moves only at low speed
148
CAUSE
• Faulty cables
• Faulty fan belt tension
• Faulty alternator.
• Faulty cables.
• Faulty alternator.
• Faulty cables.
• Battery charge insufficient.
• Faulty main fuse.
• Battery charge insufficient.
• Battery charge insufficient.
• Faulty starter.
• Faulty cables.
• Battery charge insufficient.
• Faulty bulb.
• Faulty pressure sensor.
• Faulty bulb.
• Faulty cables.
CAUSE
• No oil in the tank.
• Faulty pump.
• Hydraulic oil unsuitable for the tem-
perature.
• Faulty pump.
• Max. pressure valve setting incor-
rect, or valves not closed due to
impurities.
• Dirty drain filter.
REMEDY
(•) Check and repair any loose terminal
and connection.
• Adjust belt tension (see «EVERY
250 HOURS»).
(•) Change.
(•) Check and repair.
(•) Change.
(•) Check and repair.
• Charge battery.
• Change.
• Charge battery.
• Charge battery.
(•) Change.
(•) Check and repair.
• Charge battery.
(•) Change.
(•) Change.
(•) Change.
(•) Check and repair.
REMEDY
• Top up.
(•) Repair or change.
• Change.
(•) Repair or change.
(•) Set or change.
• Change.