Top Clearance; Servicing; Cylinder Head And Valves - Kubota D1503-M Workshop Manual

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

[3] SERVICING

(1) Cylinder Head and Valves

Top Clearance

1. Remove the cylinder head.
2. Move the piston up and stick a strip of fuse on the piston head at
three position with grease.
3. Lower the piston and install the cylinder head. (Use a new
cylinder head gasket and tighten with a specified tightening
torque.)
4. Turn the flywheel until the piston exceeds top dead center.
5. Remove the cylinder head and measure the thickness of the
fuses.
6. If the measurement is not within the factory specifications, check
the oil clearances between the crankpin and bearing and
between the piston pin and bushing.
NOTE
• After checking the top clearance, be sure to assemble the
cylinder head with a new cylinder head gasket.
Factory
Top clearance
spec.
Tightening torque Cylinder head screws
(1) Piston
(2) Fuse
S-73
DIESEL ENGINE
D1503-M
D1703-M
D1803-M
V2003-M
V2203-M
V2403-M 0.575 to 0.675 mm
V2403-M-T 0.0227 to 0.0265 in.
D1703-M-BG
V2003-M-BG
V2003-M-T-BG
V2203-M-BG
V2403-M-BG
D1803-M-DI
0.60 to 0.70 mm
V2403-M-DI
0.024 to 0.027 in.
V2403-M-DI-T
93.2 to 98.0 N·m
9.50 to 10.0 kgf·m
68.8 to 72.3 lbf·ft
[A] D1503-M, D1703-M, D1803-M
V2003-M, V2203-M, V2403-M
V2403-M-T
D1703-M-BG, V2003-M-BG
V2003-M-T-BG, V2203-M-BG
V2403-M-BG
[B] D1803-M-DI, V2403-M-DI
V2403-M-DI-T
KiSC issued 07, 2008 A
W1020190