Kubota D1503-M-DI Workshop Manual page 68

03-M-DI Series, WSM
Cylinder Head (Continued)
IMPORTANT
• When replacing piston, piston pin, small end bushing,
connecting rod, or crankpin bearings, measure piston
head's protrusion or recessing from the level of crankcase
cylinder face (average of 4 pistons) after installing the
pistons, and select the cylinder head gasket following the
below table.
Selecting the cylinder head gasket
1. Measure the piston head's protrusion or recessing from the
crankcase cylinder face 4 spots per each piston (average of four
pistons) using the dial gauge.
2. Select the suitable cylinder need gasket refer to the table below.
Gasket Size (Number)
0.475 to 0.525 mm
15
0.0187 to 0.0207 in.
0.525 to 0.575 mm
20
0.0207 to 0.0226 in.
0.575 to 0.625 mm
25
0.0226 to 0.0246 in.
0.625 to 0.675 mm
30
0.0246 to 0.0266 in.
0.675 to 0.725 mm
35
0.0266 to 0.0285 in.
(6) Measuring Points
Tappets
1. Remove the tappets (1) from the crankcase.
(When reassembling)
• Visually check the contact between tappets (1) and cams for
proper rotation. If defect is found, replace tappets.
• Before installing the tappets (1), apply engine oil thinly around
them.
IMPORTANT
• Do not change the combination of tappet (1) and tappet
guide of the crankcase.
(1) Tappet
S-47
DIESEL ENGINE
Piston Protrusion
KiSC issued 10, 2009 A
W1085632
W1022001