Mitsubishi 3000GT 1991, Service Manual

Page: 85 / 1146

ENGINE
Cvlinder Head and Valve
SERVICE POINTS OF REMOVAL
1. REMOVAL OF CYLINDER HEAD BOLT
Using the special tool, remove the cylinder head
5. 9. REMOVAL OF RETAINER LOCK
Using the special tool, remove the retainer lock.
INSPECTION
CYLINDER HEAD
bolts.
Using a straight edge and feeler gauge, measure the
flatness of the cylinder head gasket surface.
Standard value: 0.03 mm in.) or less
Limit: 0.2 mm in.)
(2) If the measured flatness exceeds the limit, grind and repair
the surface to gain the flatness of standard value or less.
Grinding Limit: 0.2 mm in.)
Caution
When the cylinder block is assembled, 0.2 mm
in.)
or less of grinding is permissible.
VALVES
Replace the valve if the margin (thickness of the valve head)
exceeds the limit.
Standard value:
Intake side
1.0 mm in.)
Exhaust side
1.5 mm in.)
Limit:
Intake side
0.5
mm in.)
Exhaust side
1 mm in.)
TSB
Revision