Oil Clearance Between Rocker Arm And Rocker Arm Shaft; Push Rod Alignment; Oil Clearance Between Tappet And Tappet Guide Bore - Kubota D1503-M Workshop Manual

03-M-E3B, 03-M-DI-E3B, 03-M-E3BG WSM

Oil Clearance between Rocker Arm and Rocker Arm Shaft

1. Measure the rocker arm shaft O.D. with an outside micrometer.
2. Measure the rocker arm I.D. with an inside micrometer, and then
calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the rocker
arm and measure the oil clearance again. If it still exceeds the
allowable limit, replace also the rocker arm shaft.
Factory spec.
Oil clearance between
rocker arm and rocker
arm shaft
Allowable limit
Rocker arm shaft O.D. Factory spec.
Rocker arm I.D. Factory spec.

Push Rod Alignment

1. Place the push rod on V blocks.
2. Measure the push rod alignment.
3. If the measurement exceeds the allowable limit, replace the push
rod.
Push rod alignment Allowable limit

Oil Clearance between Tappet and Tappet Guide Bore

1. Measure the tappet O.D. with an outside micrometer.
2. Measure the I.D. of the tappet guide bore with a cylinder gauge,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit or the tappet is
damaged, replace the tappet.
Factory spec.
Oil Clearance between
tappet and tappet guide
bore
Allowable limit
Tappet O.D. Factory spec.
Tappet guide bore I.D. Factory spec.
S-80
DIESEL ENGINE
0.016 to 0.045 mm
0.00063 to 0.0017 in.
0.10 mm
0.0039 in.
13.973 to 13.984 mm
0.55012 to 0.55055 in.
14.000 to 14.018 mm
0.55119 to 0.55188 in.
W1029150
0.25 mm
0.0098 in.
W10292900
0.020 to 0.062 mm
0.00079 to 0.0024 in.
0.07 mm
0.003 in.
23.959 to 23.980 mm
0.94327 to 0.94409 in.
24.000 to 24.021 mm
0.94489 to 0.94570 in.
W1029366
KiSC issued 07, 2008 A