Mitsubishi 4G1 Service Manual page 121

INSPECTION
CRANKSHAFT JOURNAL OIL CLEARANCE
GAUGE METHOD)
(1) Remove oil from crankshaft journal and crankshaft bearing.
(2) install the crankshaft.
(3) Cut the plastic gauge to the same length as the width of
bearing and place it on journal in parallel with its axis.
(4) Install the crankshaft bearing cap carefully and tighten the
bolts to the specified torque.
(5) Carefully remove the crankshaft bearing cap.
(6) Measure the width of the plastic gauge at its widest part by
using a scale printed on the plastic gauge bag.
Standard value: 0.02 - 0.05 (.OOOS - .0020 in.)
Limit: 0.1 mm (.0039 in.)
1 EN0271
INSPECTION
surface for warpage. Make sure that the surface is free
from gasket chips and other foreign matters.
Standard value: 0.05 mm (.0020 in.)
Limit: 0.1 mm (.0039 in.)
(2) If the distortion is excessive, correct within the allowable
limit or replace.
Grinding limit: 0.2 mm (.0079 in.)
The total resurfacing depth of both cylinder block
and mating cylinder head is 0.2 mm (.0079 in.) at
maximum.
Cylinder block height (When new):
285.1 -
(3) Check cylinder walls for scratches and seizure. If defects
are evident, correct (rebore to oversize) or replace.
(4) Using a cylinder gauge, measure the cylinder bore and
cylindricity. If worn badly, correct the cylinder to an oversize
and replace the piston and piston rings. Measure at the
points shown in illustration.
Standard value:
Cylinder I.D.
Cylindricity :
m m (11.224 - 11.232 in.)
285.3
mm
80.60
0.01 mm (.0004 in.)