Crankshaft Pin Oil Clearance; Piston Pin Installation - Mitsubishi 4G1 Series General Information Manual

4G1 ENGINE (E–W) –
Timing belt side
Production date
D
Connecting rod
Piston
B
E
E
Mitsubishi Motors Corporation
Mitsubishi Motors Corporation
2. CRANKSHAFT PIN OIL CLEARANCE (PLASTIC
(1) Wipe all oil off the crankshaft pin and connecting rod
(2) On the pin, place a plastic gauge that is cut to the same
(3) Gently place the connecting rod cap in position and tighten
(4) Remove the bolts and gently remove the connecting rod
(5) Measure the compressed part of the plastic gauge at
INSTALLATION SERVICE POINTS
"AA PISTON PIN INSTALLATION
No. 1
(1) When replacing the piston, read off the cylinder bore
No. 2
No. 3
No. 4
(2) Measure the following lengths (as shown):
C
(3) Enter the measured values into the following formula:
Piston pin
(4) Insert the Push Rod (special tool) into the piston pin,
(5) Fit the piston and connecting rod together such that their
A
(6) Apply engine oil to the outside of the piston pin.
(7) Into the front-mark side of the piston, insert the Guide
Nov. 1995
Apr. 2003
Pistons and Connecting Rods
GAUGE METHOD)
bearing.
length as the bearing's width. The plastic gauge must
be centered on the pin in parallel with the pin's axis.
the bolts to the specified torque.
cap.
its widest point using the scale printed on the plastic
gauge bag.
Standard value: 0.02 – 0.04 mm
Limit: 0.1 mm
size mark on the cylinder block as illustrated, and select
a piston according to the flowing table.
CYLINDER BORE SIZE
MARK
A
B
C
NOTE:
The piston size mark shows on the top of the piston.
A: Piston boss-to-piston boss outside dimension
B: Piston boss-to-piston boss inside dimension
C: Piston pin length
D: Connecting rod small end eye thickness
(A–C) – (B–D)
L=
2
then fit Guide A (special tool).
front marks are on the same side.
A, piston pin, and Push Rod, starting with guide A.
PWEE9520
PWEE9520-G
11A-11-3
PISTON SIZE MARK
A
None
C
Revised