TURBOCHARGER (J08E)
EN08–19
OVERHAUL CRITERIA
EN0110608H300001
1.
CONDITIONS WHICH DETERMINE WHEN A TURBOCHARGER
OVERHAUL MAY BE NEEDED ON ENGINE TROUBLESHOOTING.
The most common symptoms of turbocharger failure are related to engine
performance:
•
Lack of power
•
Excessive exhaust smoke
•
Unusual noise
•
Excessive oil or fuel consumption.
NOTICE
Any of these symptoms could be the result of an internal engine prob-
lem, and might not involve the turbocharger at all.
2.
EXAMINE THE TURBOCHARGER EXTERIOR AND INSTALLA-
TION.
! WARNING
Do not work on the turbocharger while it could be still hot. This can
result in personal injury.
Visually check for:
•
Missing or loose nuts and bolts.
•
Loose or damaged intake and exhaust pipe.
•
Damaged oil supply and drain lines.
•
Cracked or deteriorating turbocharger housings.
•
External oil or coolant leakage.
Correct any installation problems. If turbocharger parts are damaged, the
unit should be overhauled after completion of the remainder of this trouble-
shooting procedure.
! WARNING
Operation of the turbocharger without the intake pipe and air cleaner
connected can result in personal injury and damage to equipment
from foreign objects entering the turbocharger.
3.
INSPECTION TURBINE WHEEL AND HOUSING.
Remove the duct from the turbine outlet. Using a flash-light, check the
turbine for wheel to housing rub, evidence of oil leakage or foreign
object damage. Foreign object damage to the turbine is not usually
visible through the turbine outlet unless the damage is severe.
(1)
Wheel to housing rub
a.
If wheel rub is found, and the housing attaching hardware is
secure, then the turbocharger is probably damaged internally and
must be overhauled.
(2)
Oil leakage
a.
If oil deposits are found, determine whether the oil has come
from, the engine exhaust or from the turbocharger center housing.
b.
If the oil has come from the engine, consult the chapter
"ENGINE
MECHANICAL"
and correct the problem. If oil deposits on the
wheel are heavy, the turbocharger should be disassembled,
cleaned, and overhauled if necessary.
SHTS011060800010
Содержание J08E-VC
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