Oil Consumption Is Excessive (Or Exhaust Smoke Is Blue) - Komatsu PC200-8M0 Shop Manual

600 Troubleshooting of engine (S-mode)
S-8 Oil consumption is excessive (or exhaust smoke is blue)
S-8 Oil consumption is excessive (or exhaust smoke is blue)
General causes why oil consumption is excessive
q Excessive oil carry-over
q
Long-time operation of engine at low idle or high idle
(Do not idle the engine for more than 20 minutes continuously)
q
External leakage of oil
q
Wear of parts in lubrication system
Check recent repair history.
Machine operation
hours
Oil consumption suddenly increased.
Engine oil must be added more frequently.
Oil becomes contaminated quickly.
Outside of engine is dirty with oil.
Loose hose clamps are found in air intake system.
Inside of air outlet pipe at turbo compressor side is dirty with oil.
Inside of turbo exhaust outlet pipe is dirty with oil.
Oil in coolant
Oil level in damper chamber is increasing.
Exhaust smoke is blue under light load.
Amount of blowby gas
When intake manifold is removed, dust is found inside.
When intake manifold is removed, inside is abnormally dirty.
Excessive play of turbocharger shaft
Check breather or breather hose.
When compression pressure is measured, it is found to be low.
Check rear oil seal.
Pressure tightness test result of oil cooler shows oil leakage.
External leakage of oil from engine
PC200, 200LC, 220, 220LC-8M0
Operated for long period
Excessive
None
E E E
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Remedy
SEN06140-00
Cause
E
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15
40-600