Kubota EA330-E4 Series Workshop Manual page 122

EA330-E4, WSM
Oil Clearance of Camshaft
1. Measure the camshaft journal O.D. with an outside micrometer.
2. Measure the camshaft bore I.D. withe an inside micrometer and
calculate the oil clearance.
3. If the clearance exceeds the allowable limit, replace the
camshaft.
4. If the clearance still exceeds the allowable limit with new
camshaft, replace the cylinder block.
Factory specification
Oil clearance of
camshaft
[Flywheel side]
Allowable limit
Camshaft journal O.D.
Factory specification
Camshaft bore I.D.
Factory specification
Oil clearance of
camshaft
[Gear side]
Allowable limit
Camshaft journal O.D.
Factory specification
Camshaft bore I.D.
Intake and Exhaust Cam Height
1. Measure the height of the camshaft lobes at their largest O.D.
with an outside micrometer.
2. If the measurement is less than the allowable limit, replace the
camshaft and tappet.
Factory specification
Cam height (IN, EX)
Allowable limit
(1) Cam Height
1-S57
ENGINE
0.020 to 0.054 mm
0.00079 to 0.0021 in.
0.25 mm
0.0098 in.
21.967 to 21.980 mm
0.86485 to 0.86535 in.
22.000 to 22.021 mm
0.86615 to 0.86696 in.
0.025 to 0.066 mm
0.00099 to 0.0025 in.
0.1 mm
0.004 in.
32.959 to 32.975 mm
1.2976 to 1.2982 in.
33.000 to 33.025 mm
1.2993 to 1.3001 in.
9Y1211018ENS0101US0
27.0 mm
1.06 in.
26.5 mm
1.04 in.
9Y1211018ENS0102US0
KiSC issued 05, 2015 A