Kubota D1803-CR-E4 Workshop Manual page 193

SERVICING
2. Service specifications
• Idle gear shaft
• Idle gear bushing
Piston pin bore
Top ring to ring groove
[D1803-CR-E4, V2403-CR-E4]
Top ring to ring groove
[D1803-CR-TE4, -TIE4, V2403-
CR-TE4, -TE4BG, -TIE4]
Second ring to ring groove
[D1803-CR-E4, V2403-CR-E4]
Second ring to ring groove
[D1803-CR-TE4, -TIE4, V2403-
CR-TE4, -TE4BG, -TIE4]
Oil ring to ring groove
[D1803-CR-E4, V2403-CR-E4]
Oil ring to ring groove
[D1803-CR-TE4, -TIE4, V2403-
CR-TE4, -TE4BG, -TIE4]
Piston ring gap
Connecting rod
Piston pin to small end bushing
• Piston pin
• Small end bushing
Crankshaft
Crankshaft journal to crankshaft
bearing 1
• Crankshaft journal
• Crankshaft bearing 1
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
Item
O.D.
I.D.
I.D.
Clearance
Clearance
Clearance
Clearance
Clearance
Clearance
Top ring
Second ring
[D1803-CR-E4, V2403-CR-E4]
Second ring
[D1803-CR-TE4, -TIE4, V2403-
CR-TE4, -TE4BG, -TIE4]
Oil ring
[D1803-CR-E4, V2403-CR-E4]
Oil ring
[D1803-CR-TE4, -TIE4, V2403-
CR-TE4, -TE4BG, -TIE4]
Alignment
Oil clearance
O.D.
I.D.
Side clearance
Alignment
Oil clearance
O.D.
I.D.
Service specification
37.959 to37.975 mm
1.4945 to 1.4950 in.
38.000 to 38.025 mm
1.4961 to 1.4970 in.
25.000 to 25.013 mm
0.98426 to 0.98476 in.
0.050 to 0.090 mm
0.0020 to 0.0035 in.
－
0.0780 to 0.110 mm
0.00307 to 0.00433 in.
0.0930 to 0.128 mm
0.00367 to 0.00503 in.
0.030 to 0.070 mm
0.0012 to 0.0027 in.
0.020 to 0.060 mm
0.00079 to 0.0023 in.
0.20 to 0.35 mm
0.0079 to 0.013 in.
0.30 to 0.45 mm
0.012 to 0.017 in.
0.40 to 0.55 mm
0.016 to 0.021 in.
0.20 to 0.40 mm
0.0079 to 0.015 in.
0.25 to 0.45 mm
0.0099 to 0.017 in.
－
0.014 to 0.036 mm
0.00056 to 0.0014 in.
25.004 to25.011 mm
0.98441 to0.98468 in.
25.025 to25.040 mm
0.98524 to 0.98582 in.
0.15 to 0.31 mm
0.0059 to 0.012 in.
－
0.0400 to 0.118 mm
0.00158 to 0.00464 in.
59.921 to 59.940 mm
2.3591 to 2.3598 in.
59.980 to 60.039 mm
2.3615 to 2.3637 in.
4. ENGINE
Service limit
－
－
25.05 mm
0.9862 in.
0.20 mm
0.0079 in.
－
0.20 mm
0.0079 in.
0.20 mm
0.0079 in.
0.15 mm
0.0059 in.
0.15 mm
0.0059 in.
1.25 mm
0.0492 in.
1.25 mm
0.0492 in.
1.25 mm
0.0492 in.
1.25 mm
0.0492 in.
1.25 mm
0.0492 in.
0.05 mm
0.002 in.
0.15 mm
0.0059 in.
－
－
0.50 mm
0.020 in.
0.03 mm
0.001 in.
0.20 mm
0.0079 in.
－
－
(Continued)
4-93
KiSC issued 12, 2018 A