Kubota WSM J Series Workshop Manual page 121

J SERIES, WSM
Crankshaft Assembly
1. Remove the main bearing case screw 2 (1).
2. Pull out the crankshaft assembly.
IMPORTANT

• Take care to protect crankshaft bearing 1 from scratches,
caused by the crank gear, etc. (Wrap the gear in vinyl tape,
etc.) (D1005 and V1305 only)
(When reassembling)
• Clean the oil passage of the crankshaft with compressed air.
• Apply oil to the main bearing case screw 2 (1).
• Install the crankshaft assembly, aligning the screw hole of main
bearing case with the screw hole of crankcase.
• Clean the oil passage of the crankshaft with compressed air.
Tightening Main bearing case
torque screw 2
(1) Main Bearing Case Screw 2
Main Bearing Case Assembly
1. Remove the two main bearing case screws 1, and remove the
main bearing and crankshaft bearing 2.
2. Remove the main bearing case assembly 1 and 2 as above.
(When reassembling)
• Clean the oil passage in the main bearing case.
• Apply clean engine oil on the bearings.
• Install the main bearing case assemblies in the original positions.
Since diameters of main bearing case vary, install them in order
of makings (A, B) from the gear case side.
• Match the alignment numbers (1) on the main bearing case.
• When installing the main bearing case 1 and 2, face the mark
"FLYWHEEL" to the flywheel.
• Apply engine oil to the main bearing case screw 1.
• Install the thrust bearing with its oil groove facing outward.
• Confirm that the main bearing case moves smoothly after
tightening the main bearing case screw 1 to the specified torque.
Tightening Main bearing case
torque screw 1
(1) Alignment Number
S-75
ENGINE
26.5 to 30.4 N·m
Z482
2.7 to 3.1 kgf·m
D722
19.5 to 22.4 ft-lbs
49.0 to 53.9 N·m
D1005
5.0 to 5.5 kgf·m
V1305
36.2 to 39.8 ft-lbs
W10295750
12.7 to 15.7 N·m
Z482
1.3 to 1.6 kgf·m
D722
9.4 to 11.6 ft-lbs
29.4 to 34.3 N·m
D1005
3.0 to 3.5 kgf·m
V1305
21.7 to 25.3 ft-lbs
(2) Main Bearing Case Screw 1
W10297990
KiSC issued 10, 2016 A