FUNCTIONING
TROUBLESHOOTING
3-199
Engine
3
q
( ): Always contact the Komatsu distributor when you must carry out these operations.
q
If the anomaly or its cause is not included in the table below, contact your Komatsu distributor for the
necessary repair.
TROUBLE
CAUSE
SOLUTION
Engine oil pressure warning light
comes on.
q
Oil level in oil pan too low (air
sucked in).
q
Oil filter cartridge clogged.
q
Faulty tightening of oil pipe or
pipe coupling, oil leakage from a
defective point.
q
Faulty pressure sensor.
q
Faulty monitor.
q
op up oil until reaching correct
level, see page 3-112.
q
Replace cartridge, see page 4-
59.
q
(Check and repair).
q
(Change).
q
(Change).
Steam comes out of radiator
(pressure valve).
q
Engine coolant level low, coolant
leakage.
q
Fan belt slack.
q
Mud or limestone accumulated in
cooling system.
q
Radiator fins damaged or closed.
q
Faulty thermostat.
q
Radiator cap loose
(work at considerable heights)
q
Faulty monitor.
q
Check, top up, repair, see page
3-111.
q
Adjust fan belt tension, see page
4-51.
q
Change fluid and clean cooling
system, see page 4-80.
q
Clean or repair, see page 4-64.
q
(Change).
q
Tighten cap or change gasket.
q
(Change).
The engine water temperature
indicator enters the red area.
Engine does not start with starter
running.
q
Fuel level too low.
q
Air in the fuel system.
q
Pump or fuel injection nozzle
faulty.
q
Starter makes engine run slowly.
q
Preheating warning light does not
come on.
q
Faulty compression.
(Excessive valve clearance).
q
Refuel, see page 3-113.
q
Repair point where air is sucked
in.
q
(Change pump or nozzle).
q
See "Electrical system".
q
See "Electrical system".
q
Adjust valve clearance.
Exhaust gases white or light blue.
q
Too much oil in oil pan.
q
Unsuitable fuel.
q
Quick acceleration soon after
cold start of the engine.
q
Add oil up to specified level, see
page 3-112.
q
Change with fuel in compliance
with standards.
q
Avoid quick accelerations until
engine has warmed up.
Exhaust gases occasionally become
black.
q
Air filter clogged.
q
Faulty nozzle.
q
Faulty compression.
q
Faulty turbocompressor.
q
Clean or replace, see page 4-24.
q
(Change nozzle).
q
(Check compression).
q
(Clean or replace the
turbocompressor).
Combustion noise occasionally
resembles a blow.
q
Faulty nozzle.
q
(Change nozzle).
WEAM014802
Содержание PC118MR-8
Страница 1: ......
Страница 2: ......
Страница 3: ...FOREWORD 11 WEAM014802...
Страница 5: ...FOREWORD FOREWORD 1 3 Storage location for the Operation and Maintenance Manual WEAM014802...
Страница 27: ...SAFETY SAFETY LABELS 2 3 LOCATION OF SAFETY LABELS 2 WEAM014802...
Страница 40: ...SAFETY LABELS SAFETY 2 16 For detail see LIFTING CAPACITIES TABLES 3 168 q Overload alarm WEAM014802...
Страница 84: ...SAFETY MAINTENANCE INFORMATION SAFETY 2 60 WEAM014802...
Страница 304: ...LUBRICATION MAINTENANCE 4 18 2 PIECE BOOM 4 Grease Filter Oil WEAM014802...
Страница 379: ...SPECIFICATIONS 15 WEAM014802...
Страница 390: ...LIFTING CAPACITIES TABLES SPECIFICATIONS 5 12 WEAM014802...
Страница 416: ...INSTALLING AND REMOVING THE ADDITIONAL COUNTERWEIGHT OPTIONAL EQUIPMENT 6 26 WEAM014802...
Страница 417: ......
Страница 418: ......