Kubota D1503-M-DI Workshop Manual page 93

03-M-DI Series, WSM
Clearance between Piston Ring and Groove
1. Remove carbon from the ring grooves.
2. Measure the clearance between the ring and the groove with a
feeler gauge.
3. If the clearance exceeds allowable limit, replace the ring since
compression leak and oil shortage result.
4. if the clearance still exceeds the allowable limit after replacing the
ring, replace the piston.
Factory
spec.
Top Ring
Allowable limit
Factory
spec.
Second ring
Allowable limit
Factory
spec.
Oil ring
Allowable limit
Connecting Rod Alignment
NOTE
• Since the I.D. of the connecting rod small end bushing is the
basis of this check, check bushing for wear beforehand.
1. Install the piston pin into the connecting rod.
2. Install the connecting rod on the connecting rod alignment tool.
3. Put a gauge over the piston pin and move it against the face
plate.
4. If the gauge does not fit squarely against the face plate, measure
the space between the pin of the gauge and the face plate.
5. If the measurement exceeds the allowable limit, replace the
connecting rod.
Connecting rod
Allowable limit
alignment
S-72
DIESEL ENGINE
D1703-M-DI
D1803-M-DI 0.050 to 0.090 mm
V2203-M-DI 0.0020 to 0.0035 in.
V2403-M-DI
0.2 mm
0.0079 in.
D1503-M-DI 0.093 to 0.128 mm
D1503-M-DI-T 0.0037 to 0.0050 in.
D1703-M-DI
D1803-M-DI 0.050 to 0.090 mm
V2203-M-DI 0.0020 to 0.0035 in.
V2403-M-DI
0.2 mm
0.0079 in.
D1503-M-DI 0.020 to 0.060 mm
D1503-M-DI-T 0.00079 to 0.00236 in.
D1703-M-DI
D1803-M-DI 0.030 to 0.070 mm
V2203-M-DI 0.0012 to 0.0028 in.
V2403-M-DI
0.15 mm
0.0059 in.
0.05 mm
0.0020 in.
W1032489
W1032720
KiSC issued 10, 2009 A