Yangdong Co. Y90 Series Manuel de service télécharger pdf (Page 47)

OPERATION&MAINTENANCE MANUAL

turbocharger and the diesel engine. If believing the trouble caused by

turbocharger doesn’t unload the turbocharger from the diesel immediately,

especially neither disassembles it. Eliminating the fault by replacing the

turbocharger simply can’t solve the problem, but also causes the new problem.

Should diagnose the fault, and eliminate it after finding out the problem.

A turbocharger with a good running generally can operate normally in the later

service. If the blade wheel can rotate freely and don’t scrape the internal

surface of the turbocharger, it is not necessary to determine the fault of the

turbocharger itself. The experience shows that most of the malfunctions owe to

the unordinary use of the diesel engine .Therefore the following recommend

fault diagnose chart mainly about the whole air-supercharging system. After

finishing the fault diagnose chart and noting the results in details, if necessary,

unload the turbocharger and diagnose further. The turbocharger should be

taken to the repair station or the diesel engine manufacture to diagnose and

analyze.

Section 9 The faults diagnose list of turbo-charger

Symptom Trouble shooting diagram

Turbo-

charg

er side

oil

seal

leakag

compress

or side

oil

seal

leakage

supercharg

Periodic

abnormal

noise

High noise

for

supercharg

Blue

exhau

smoke

Excessive

consumpti

of lub-oil

Insuffic

ient

output

power

exhau

Black

smoke Problem Solution

√ √ √ √ √

Air filter too

dirty

Clean or

replace

filter core

√

Leak air for

the pipe

Tighten

fastener or

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Yangdong Co. Y90 Series Manuel de service Page 47

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