4g1 engine (e - w) – Mitsubishi Motors 4G1 User Manual

Page 87

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4G1 ENGINE (E - W) -

Pistons and Connecting Rods

11A-11-4

PWEE9520

E

Nov. 1995

Mitsubishi Motors Corporation

(8) Mount the piston and connecting rod on the Piston Pin

Setting Base (special tool) with the piston’s front mark

pointing upward.

(9) Install the piston pin using a press. If the press-fitting

load is out of specification, replace the piston pin and

piston assembly or the connecting rod, or both.

Standard value: 4,900 - 14,700 N

"

B

A

OIL RING INSTALLATION

(1) Fit the oil ring spacer into the piston ring groove. Then,

fit the upper and lower side rails.
NOTE

(1) The spacer and side rails may be fitted in either

direction. No distinction is made between top and

bottom.

(2) Spacer and side rail sizes are color-coded as follows:

Size

Color

STD

None

0.50 mm O. S.

Blue

1.00 mm O. S.

Yellow

(2) To install a side rail, fit one end of the rail into the groove

then press the rest of the rail into position by hand as

shown.

Caution
Do not fit side rails using a piston ring expander since
they may break.

(3) After installing the side rails, check that they move

smoothly in both directions.

Front

mark

Push Rod

Piston pin

Front mark

Guide A

Base

Guide B

Side rail

Spacer

1EN0277

End of side rail

7EN0451

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