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6G7 ENGINE (E-W) -
Piston and Connecting Rod
11A-12-3
INSPECTION
PISTON RING
(1) Check the clearance between the piston ring and the ring
groove. If it exceeds the specified limit, change the ring
or the piston and piston ring.
Standard values: No. 1 0.03 - 0.07 mm
No. 2 0.02 - 0.06 mm
Limit: 0.1 mm
(2) Place the piston ring in the cylinder bore, push it in by
applying the piston head side, and make sure it is square.
Then measure the clearance at the ring ends with a
thickness gauge.
Change the piston ring if the clearance at the ring end
is excessive.
Standard values: No. 1 0.30 - 0.45 mm
No. 2 0.45 - 0.60 mm
Oil 0.20 - 0.60 mm
Limit: No. 1 0.8 mm
No. 2 0.8 mm
Oil 1.0 mm
CRANKSHAFT PIN OIL CLEARANCE (PLASTIGAUGE
METHOD)
(1) Drain oil from the crankshaft pin and the connecting rod
bearing.
(2) Place a piece of Plastigauge the length of the bearing
width on the crankshaft pin straight along the pin centre.
(3) Gently place the connecting rod cap on top and tighten
the bolt to the specified torque.
(4) Detach the bolt and gently remove the connecting rod
cap.
(5) Measurethe widthofthecrushedPlastigauge (atthewidest
point) using the scale printed on the Plastigauge package.
Standard value: 0.02 - 0.05 mm
Limit: 0.1 mm
PWEE9615
E
Dec. 1996Mitsubishi Motors Corporation
7EN0475
7EN0476
Push inusing
the piston
Piston ring
End clearance
1EN0246