Kubota GR1600EU, Руководство по ремонту, Страница: 131 / 285

ENGINE GR1600EU, WSM
1-S45
Piston Ring Gap
1. Insert the piston ring into the lower part of the cylinder (the least
worn out part) with piston.
2. Measure the ring gap with a thickness gauge.
3. If the measurement exceeds the allowable limit, replace the
piston ring.
9Y1210595ENS0077US0
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
thickness 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.
9Y1210595ENS0078US0
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.
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Piston ring gap
Top ring
Factory
specifica-
tion
0.15 to 0.30 mm
0.0059 to 0.011 in.
Allowable
limit 1.20 mm
0.0472 in.
Second
ring
Factory
specifica-
tion
0.30 to 0.40 mm
0.012 to 0.015 in.
Allowable
limit 1.20 mm
0.0472 in.
Oil ring
Factory
specifica-
tion
0.15 to 0.30 mm
0.0059 to 0.011 in.
Allowable
limit 1.20 mm
0.0472 in.
Clearance between
piston ring and piston
ring groove
Second
ring
Factory
specifica-
tion
0.0850 to 0.115 mm
0.00335 to 0.00452 in.
Allowable
limit 0.15 mm
0.0059 in.
Oil ring
Factory
specifica-
tion
0.02 to 0.06 mm
0.0008 to 0.002 in.
Allowable
limit 0.15 mm
0.0059 in.
Space between gauge
pin face plate
Allowable limit
0.05 mm
0.0020 in.
KiSC issued 11, 2013 A