Kubota WSM B2050 Workshop Manual page 131

B2050, B2350, B2650, B3150, WSM
Crankshaft Assembly (Except D1305)
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.).
(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 torque Main bearing case screw 2
(1) Main Bearing Case Screw 2
Crankshaft Assembly [D1305-E4]
1. Remove the main bearing case screw 2.
2. Turn the crankshaft to set the crankpin of the third cylinder to the
A. Then draw out the crankshaft until the crankpin of the second
cylinder comes to the center of the third cylinder.
3. Turn the crankshaft by 2.09 rad (120 °) counterclockwise to set
the crankpin of the second cylinder to the A. Draw out the
crankshaft until the crankpin of the first cylinder comes to the
center of third cylinder.
4. Repeat the above steps to draw out all the crankshaft.
(When reassembling)
• Clean the oil passage of the crankshaft with compressed air.
• Install the crankshaft assembly, aligning the screw hole of main
bearing case screw 2 with the screw hole of crankcase.
• When tightening the main bearing case 2, apply oil to the main
bearing case screw 2 and screw by hand before tightening the
specific torque. If not smooth to screw by hand, align the screw
holes between the crankcase and the main bearing case.
Tightening torque Main bearing case screw 2
A: Cut place for removing and
installing the crankshaft
1-S42
ENGINE
49 to 53 N·m
5.0 to 5.5 kgf·m
37 to 39 lbf·ft
9Y1210982ENS0072US0
49 to 53 N·m
5.0 to 5.5 kgf·m
37 to 39 lbf·ft
9Y1210982ENS0073US0
KiSC issued 03, 2014 A