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6G7 ENGINE (E-W) -
Crankshaft, Flywheel and Drive Plate
11A-13-2
INSPECTION
CRANKSHAFT OIL CLEARANCE (PLASTIGAUGE
METHOD)
NOTE
If the oil clearance exceeds the limit, replace the bearing,
and crankshaft if necessary.
This crankshaft oil clearance can be measured easily by using
a plastic gauge, as follows:
1 Remove oil and grease a nd any other foreign material
from crankshaft journal and bearing inner surface.
2 Install the crankshaft.
3 Cut the plastigauge to the same length as the width of
bearing and place it on journal in parallel with its axis.
4 Gently place the crankshaft bearing cap over it and tighten
the bolts to the specified torque.
5 Remove the bolts and gently remove the crankshaft
bearing cap.
6 Measure the width of the crushed plastic gauge at its
widest section by using a scale printed on the plastigauge
package.
Standard values: 0.02 - 0.04 mm
Limit: 0.1 mm
CYLINDER BLOCK
(1) Visually check for scratches, rust and corrosion. Also use
flaw detecting agents and the like to check for cracks.
If there are any defects, rectify the cylinder block.
(2) Measure the flatness of the cylinder block t o p surface
with a straight edge and a thickness gauge. During
measurement, the cylinder block t op surface must be free
from gasket pieces and the like.
Standard values: 0.05 mm
Limit: 0.1 mm
(3) Check for scratches or seizure of the cylinder wall. If there
are any defects, correct (bore it a oversize) or change
the cylinder block.
(4) Measure the inside diameter and the ovalityof the cylinder.
If the cylinder is overly worn, correct it to a larger size
and change the pistons and the piston rings.
Standard value:
Cylinder inside diameter 91.1 mm
Ovality: 0.01 mm
PWEE9615
E
Dec. 1996Mitsubishi Motors Corporation
7EN0459
Plastigauge
7EN0141
7EN0460
7EN0461
12 mm