Measuring Piston Ring End Gap; Measuring Piston Pin Bore Diameter And Piston Pin Outside Diameter; Measuring Clearance Between Connecting Rod Bushing And Piston Pin - Mitsubishi S3Q2 Service Manual

INSPECTION AND REPAIR OF BASIC ENGINE

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.
Item
No.1, 2
compression ring
Piston ring
end gap
Oil ring
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.
Item Nominal
Piston pin ø 28 mm
inside diameter [1.10 in.]
Piston pin ø 28 mm
outside diameter [1.10 in.]
Clearance between
piston pin bore -
and piston pin
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.
Item Nominal
Bushing ø 28 mm
inside diameter [1.10 in.]
Clearance
between
-
bushing and
piston pin
6-14
Standard Limit
0.25 to 0.40 mm
[0.0098 to 0.0157 in.]
1.50 mm
[0.0591 in.]
0.30 to 0.50 mm
[0.0118 to 0.0197 in.]
Standard Limit
28.000 to 28.010 mm
[1.1024 to 1.1028 in.]
27.994 to 28.000 mm
[1.1021 to 1.1024 in.]
0.000 to 0.016 mm 0.050 mm
[0.000 to 0.0006 in.] [0.0020 in.]
Standard Limit
28.020 to 28.045 mm
-
[1.1031 to 1.1201 in.]
0.020 to 0.051 mm 0.080 mm
[0.0008 to 0.0020 in.] [0.0031 in.]
Sickness gauge
Measuring piston ring end gap
Measuring
-
locations
-
Measuring piston pin bore diameter and piston pin
Measuring connecting rod bushing inside diameter
Measuring
directions
outside diameter
Measuring
directions
Measuring
locations