Kubota GL6000A-AU-B Workshop Manual page 114

GL6000A-AU-B, GL6000D-AU-B,GL9000A-AU-B, GL9000D-AU-B, WSM
Piston Ring Gap
1. Insert the piston ring into the lower part of the cylinder (the least
worn out part) with a piston ring compressor and piston.
2. Measure the ring gap with a feeler gauge.
3. If the measurement exceeds the allowable limit, replace the
piston ring.
Top ring
Second
Piston ring gap
ring
Oil ring
Clearance between Piston Ring and Piston Ring Groove
1. Clean the rings and the ring grooves, and install each ring in its
groove.
2. Measure the clearance between the ring and the groove with a
feeler gauge.
3. If the clearance exceeds the allowable limit, replace the piston
ring.
4. If the clearance still exceeds the allowable limit with new ring,
replace the piston.
Second
ring
Clearance between
piston ring and piston
ring groove
Oil ring
Connecting Rod Alignment
1. Remove the crankpin bearing, and install the connecting rod
cap.
2. Install the piston pin in the connecting rod.
3. Install the connecting rod on the connecting rod alignment tool
(Code No. 07909-31661).
4. Put a gauge over the piston pin, and move it against the face
plate.
5. If the gauge does not fit squarely against the face plate,
measure the space between the pin of the gauge and the face
plate.
6. If the measurement exceeds the allowable limit, replace the
connecting rod.
Space between gauge
Allowable limit
pin face plate
1-S52
ENGINE
Factory
0.15 to 0.30 mm
specifica-
0.0059 to 0.011 in.
tion
Allowable 1.20 mm
limit 0.0472 in.
Factory
0.30 to 0.45 mm
specifica-
0.012 to 0.017 in.
tion
Allowable 1.20 mm
limit 0.0472 in.
Factory
0.15 to 0.30 mm
specifica-
0.0059 to 0.011 in.
tion
Allowable 1.20 mm
limit 0.0472 in.
9Y1211607ENS0088US0
Factory
0.0900 to 0.120 mm
specifica-
0.00355 to 0.00472 in.
tion
Allowable 0.15 mm
limit 0.0059 in.
Factory
0.04 to 0.08 mm
specifica-
0.002 to 0.003 in.
tion
Allowable 0.15 mm
limit 0.0059 in.
9Y1211607ENS0089US0
0.05 mm
0.002 in.
9Y1211607ENS0090US0
KiSC issued 06, 2016 A