Mitsubishi S3Q2 User Manual

INSPECTION AND REPAIR OF BASIC ENGINE
6-14
4.3 Measuring piston ring end gap
Place the piston rings in a gauge or a new cylinder liner, and
measure the gap of each ring with feeler gauges. If the limit
is exceeded, replace all the rings as a set.
Note: Using a piston, push the piston ring squarely into the
gauge or the cylinder liner.
Measuring piston ring end gap
4.4 Measuring piston pin bore diameter and
piston pin outside diameter
Measure the piston pin bore diameter and piston pin outside
diameter. Replace if the limit is exceeded.
Measuring piston pin bore diameter and piston pin
outside diameter
4.5 Measuring clearance between connecting
rod bushing and piston pin
Measure the inside diameter of the connecting rod bushing
and the outside diameter of the piston pin. Replace if the
limit is exceeded.
Measuring connecting rod bushing inside diameter
Item Standard Limit
Piston ring
end gap
No.1, 2
compression ring
0.25 to 0.40 mm
[0.0098 to 0.0157 in.]
1.50 mm
[0.0591 in.]
Oil ring
0.30 to 0.50 mm
[0.0118 to 0.0197 in.]
Sickness gauge
Item Nominal Standard Limit
Piston pin
inside diameter
ø 28 mm
[1.10 in.]
28.000 to 28.010 mm
[1.1024 to 1.1028 in.]
-
Piston pin
outside diameter
ø 28 mm
[1.10 in.]
27.994 to 28.000 mm
[1.1021 to 1.1024 in.]
-
Clearance between
piston pin bore
and piston pin
-
0.000 to 0.016 mm
[0.000 to 0.0006 in.]
0.050 mm
[0.0020 in.]
Measuring
locations
Measuring
directions
Item Nominal Standard Limit
Bushing
inside diameter
ø 28 mm
[1.10 in.]
28.020 to 28.045 mm
[1.1031 to 1.1201 in.]
-
Clearance
between
bushing and
piston pin
-
0.020 to 0.051 mm
[0.0008 to 0.0020 in.]
0.080 mm
[0.0031 in.]
Measuring
locations
Measuring
directions

Mitsubishi S3Q2 Specifications

General

Brand	Mitsubishi
Model	S3Q2
Category	Engine
Language	English