Mitsubishi 4G1 Service Manual page 517

INSPECTION
CRANKSHAFT OIL CLEARANCE (PLASTIC GAUGE
METHOD)
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 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 package.
Standard value: 0.02 - 0.05 mm (.OOOS - .0020 in.)
Limit: 0.1 mm (.004 in.)
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CYLINDER BLOCK
Use also a flaw detecting agent for the check. If defects are
evident, correct, or replace.
(2) Using a straightedge and feeler gauge, check the block top
surface for warpage.Make sure that the surface is free from
gasket chips and other foreign matter.
Standard value: 0.05 mm (.0020 in.)
Limit: 0.1 mm (.004 in.)
(3) If the distortion is excessive, correct within the allowable
limit or replace.
Grinding limit: 0.2 mm (.008 in.)
The total thickness of the stock allowed to be
removed from cylinder block and mating cylinder
head is 0.2 mm (.008 in.) at maximum.
Cylinder block height (when new):
283.9 - 284.1 mm
(11.177 - 11.185 in.)
289.9 - 290.1 mm
(11.413 - 11.421 in.)
(4) Check cylinder walls for scratches and seizure. If defects
are evident, correct (bored to oversize) or replace.
(5) Using cylinder gauge, measure the cylinder bore and
cylindricity. If worn badly, correct cylinder to an oversize
and replace piston and piston rings. Measure at the points
shown in illustration.
Standard value:
Cylinder I.D.
85.00 - 85.03 mm (3.3465 - 3.3476 in.)
86.50 - 86.53 mm (3.4055 - 3.4067 in.)
Cylindricity 0.01 mm (.0004 in.)
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