Piston, Connecting Rod Servicing; Checking Inside Diameter Of Piston Bosses; Checking Clearance Between Piston Pin And Rod Small-End Bushing; Checking Piston Ring Gap - Kubota D1102-B Workshop Manual

C01 9 F052
C01 9 F053
r'\
C019 F054
0

Checking Inside Diameter of Piston Bosses

1) Measure the piston pin hole with an inside micrometer.
2) If the measurement exceeds the allowable limit, replace it.
Checking Clearance between Piston Pin and
Rod Small-End Bushing
1) Measure the piston pin with an outside micrometer.
2) Measure the inside diameter of rod small-end bushing with
an inside micrometer. Calculate the clearance.
3) If the clearance exceeds the allowable limit, replace it.
Reference value
Allowable limit
8

Checking Piston Ring Gap

1) Put the piston ring in the cylinder.
2) Stand the piston upside down and push the ring into the
cylinder with the piston head.
3) Insert a feeler gauge into the piston ring gap.
4) If the measurement exceeds the allowable limit, replace it.
( I m portant)
• Measure the piston ri ng gap at the poi nt of the mi nim u m
i nside d iameter of the cylinder li ner.
C
Top
ring
Second ring
Oil ring
62
23.053 mm
0.9076 in.
0.014 to 0.038 mm
0.0006 to 0.0015 in.
0.015 to 0.067 mm
[ Service
Part
0.0006 to 0.0026 in.
0.15 mm
0.0059 in.
to
0.25
0.45
0.0098
0.0177
KiSC issued 09, 2007 A
]