Specifications

4M41 ENGINE -
Piston and Connecting Rod
11B-23-11
(2) Piston Ring-to-Piston Ring Groove Clearance
1) If the measured clearance exceeds the specified limit,
replace the defective part.
Standard value:
1st compression ring 0.03 - 0.08 mm
2nd compression ring 0.07 - 0.10 mm
Oil ring 0.03 - 0.06 mm
Limit: 0.15 mm
NOTE
The 1st compression ring
6
is of full keystone type.
Measure the clearance with a feeler gauge
G
while
pressing the ring against the piston pin groove bottom
with a straight edge
H
.
Caution
1. Clear all carbon deposits from the ring groove
of the piston 11 and measure the clearance all
around the ring groove.
2. When it becomes necessary to replace any of
the rings 6, 7 and 8, replace all of them as a set.
3. PISTON PIN
(1) Measure the clearance between piston pin
10
and piston
11
. If the reading exceeds the specified limit, replace
the defective part.
Standard value: 0.007 - 0.021 mm
Limit: 0.05 mm
(2) Measure the clearance between piston pin
10
and
connecting rod bush
13
. If the reading exceeds the limit,
replace the defective part.
Standard value: 0.03 - 0.05 mm
Limit: 0.1 mm
PWEE9409-D
E
Feb. 2000Mitsubishi Motors Corporation Added
11
6, 7, 8
11
6
H
G
4ME0454
11
10
10
13