Mitsubishi 3000GT 1991 Service Manual page 329

INTAKE AND EXHAUST - Turbocharger (Front)
SERVICE POINTS OF REMOVAL
19. REMOVAL OF OXYGEN SENSOR
25. DISCONNECTION OF AIR CONDITIONER COMPRES-
INSPECTION
TURBOCHARGER ASSEMBLY CHECK
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Check whether the turbine wheel and the compressor
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Check for oil leakage from the turbocharger assembly.
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OIL PIPE AND OIL-RETURN PIPE CHECK
Check the oil pipe and oil-return pipe for clogging, bending, or
other damage.
If there is clogging, clean it.
SERVICE POINTS OF INSTALLATION
24. INSTALLATION OF TURBOCHARGER ASSEMBLY
TSB Revision
Disconnect the connector of the oxygen sensor, and install
the special tool to the oxygen sensor.
SOR
Disconnect air conditioner compressor with hoses from the
bracket.
NOTE
The removed air conditioner compressor should be fas-
tened (by using rope, etc.) in a position that will not interfere
with the removal/installation of the turbocharger assembly.
Visually check the turbine wheel and the compressor wheel
for cracking or other damage.
wheel can be easily turned by hand.
Check whether or not the waste gate valve remains open. If
any problem is found, replace the part after disassembly.
Clean the alignment surfaces shown in the illustration.
Supply clean engine oil through the oil pipe installation hole
of the turbocharger assembly.
Caution
When cleaning, care must be taken so that a piece of
the gasket does not enter the oil passage hole.