Kubota D1803-CR-E4, Workshop Manual

Page: 192 / 309

Item Service specification Service limit
Valve spring
Setting load / Setting length (In-
take)
118 N / 35.0 mm
12.0 kgf / 35.0 mm
26.5 lbf / 1.38 in.
100 N / 35.0 mm
10.2 kgf / 35.0 mm
22.5 lbf / 1.38 in.
Setting load / Setting length (Ex-
haust)
118 N / 35.0 mm
12.0 kgf / 35.0 mm
26.5 lbf / 1.38 in.
100 N / 35.0 mm
10.2 kgf / 35.0 mm
22.5 lbf / 1.38 in.
Rocker arm shaft to rocker arm Oil clearance
0.016 to 0.045 mm
0.00063 to 0.0017 in.
0.10 mm
0.0039 in.
• Rocker arm shaft O.D.
13.973 to 13.984 mm
0.55012 to 0.55055 in.
－
• Rocker arm I.D.
14.000 to14.018 mm
0.55119 to 0.55188 in.
－
Push rod Alignment
－
0.25 mm
0.0098 in.
Tappet to tappet guide bore Oil clearance
0.020 to 0.062 mm
0.00079 to 0.0024 in.
0.07 mm
0.003 in.
• Tappet O.D.
23.959 to 23.980 mm
0.94327 to 0.94409 in.
－
• Tappet guide bore I.D.
24.000 to 24.021 mm
0.94489 to 0.94570 in.
－
Camshaft
Side clearance
0.070 to 0.22 mm
0.0028 to 0.0086 in.
0.30 mm
0.012 in.
Alignment
－
0.01 mm
0.0004 in.
Cam height
[D1803-CR-E4, -TE4, -TIE4]
Intake
33.90 mm
1.335 in.
33.85 mm
1.333 in.
Exhaust
33.90 mm
1.335 in.
33.85 mm
1.333 in.
Cam height
[V2403-CR-E4, -TE4, -TE4BG, -
TIE4]
Intake 33.47 mm
1.318 in.
33.42 mm
1.316 in.
Exhaust 33.00 mm
1.299 in.
32.95 mm
1.297 in.
Camshaft journal to crankcase
bore
Oil clearance
0.050 to 0.091 mm
0.0020 to 0.0035 in.
0.15 mm
0.0059 in.
• Camshaft journal O.D.
39.934 to39.950 mm
1.5722 to 1.5728 in.
－
• Crankcase bore I.D.
40.000 to 40.025 mm
1.5748 to 1.5757 in.
－
Timing gear
Crank gear to idle gear Backlash
0.04150 to 0.1122 mm
0.001634 to 0.004417 in.
0.15 mm
0.0059 in.
Idle gear to cam gear Backlash
0.04150 to 0.1154 mm
0.001634 to 0.004543 in.
0.15 mm
0.0059 in.
Crank gear to oil pump drive gear
2
Backlash
0.04150 to 0.1090 mm
0.001634 to 0.004291 in.
0.15 mm
0.0059 in.
Idle gear to supply pump gear Backlash
0.04150 to 0.1154 mm
0.001634 to 0.004543 in.
0.15 mm
0.0059 in.
Idle gear Side clearance 0.15 to 0.25 mm
0.0059 to 0.0098 in.
0.90 mm
0.035 in.
Idle gear shaft to idle gear bush-
ing
Oil clearance
0.025 to 0.066 mm
0.00099 to 0.0025 in.
0.10 mm
0.0039 in.
(Continued)
4. ENGINE
SERVICING
2. Service specifications
4-92
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
KiSC issued 12, 2018 A