6.20 TROUBLESHOOTING M A E D A Crawler Crane
6-106 5/2020 CC1908S-1
ENGINE
Abnormal phenomenon Main causes Corrective action
Engine oil pressure warning is
displayed while the engine is
running.
Insufficient or too much engine
oil
Refer to "5.2.2 OPERATIONS
AND CHECKS BEFORE
STARTING ENGINE" on P.
5-6. and ensure the oil level is
correct.
Engine oil filter clogging
Refer to "6.17.6
MAINTENANCE EVERY 500
HOURS" on P. 6-60 and
replace filter.
Defective pressure switch
Replace (★)
Engine water temperature warning
is displayed while the engine is
running.
Insufficient of cooling water
Refer to "5.2.2 OPERATIONS
AND CHECKS BEFORE
STARTING ENGINE" on
P. 5-6. and ensure the cooling
water level is correct.
Radiator fin clogging
Refer to "6.17.5
MAINTENANCE EVERY 250
HOURS" on P. 6-54 and clean.
Water leakage from the cooling
line
Inspect/repair (★)
Fan belt looseness/damage
Refer to "6.17.5
MAINTENANCE EVERY 250
HOURS" on P. 6-54 and adjust
the tension or replace (★).
Accumulation of dirt and scale
in cooling system
Refer to "6.17.9
MAINTENANCE EVERY 2,000
HOURS" on P. 6-70 and wash.
Starter operates, but engine does
not start.
Insufficient fuel
Refer to "5.2.2 OPERATIONS
AND CHECKS BEFORE
STARTING ENGINE" on
P. 5-6. and refuel.
Air is mixed in fuel system
Refer to "6.19.6 FUEL FUEL
CIRCUIT AIR BLEEDING" on
P. 6-99. and bleed air.
Defective fuel Replace with specified fuel.
Fuel prefilter and main filter
clogging
Refer to "6.17.6
MAINTENANCE EVERY 500
HOURS" on P. 6-60 and
replace filter.
Defective fuel injector pump or
nozzle
Replace pump or nozzle (★).
Incorrect compression
(Incorrect valve clearance)
Adjust valve clearance (★).
Starter not rotating even after the
starter switch is turned
Defective wiring
Inspect/repair (★)
Blown fuse Replace
Defective starter
Replace (★)
Insufficient battery charge or
defective battery
Recharge/replace (★) the
battery.
Disconnecting switch is off. Turn on.
Starter pinion going in and out
repeatedly (struggling)
Insufficient battery charge Recharge the battery.
Defective safety relay
Replace (★)
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