Kubota M5040, Workshop Manual

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1-S51
M5040, M6040, M7040, WSM ENGINE
Crankshaft and Crankcase (Continued)
(When reassembling)
• Make sure the crankcase 1 (3) and 2 (1) are clean.
• Reassemble the thrust bearing (2), with the oil groove facing
outside, into both flywheel housing edge journal side of the
crankcase 1 (3) and 2 (1).
• Apply oil to the thrust bearing and set the crankshaft (5).
• Apply liquid gasket (4) (Three Bond 1217D) to the crankcase 1
as shown in the figure.
• Confirm that the liquid gasket coating surface is free of water,
dust and oil in order to maintain sealing effect.
• Carefully apply the adhesive evenly.
• Match the crankcase 1 (3) and 2 (1), referring to the flywheel
housing’s contoured face.
• Tighten the crankcase 2 mounting screws ( A to J ) and the
crankcase 2 flange screws ( K to Z ) loosely after applying engine
oil.
• Tighten up the jig (6) to the specified torque same as the flywheel
housing screw. (Refer to “8. SPECIAL TOOLS” at “G.
GENERAL” section.) This helps to minimize the level difference
between the crankcase 1 and the crankcase 2 (at the flywheel
side). Possible gap must be 0.05 mm (0.0020 in.) or smaller.
• Tighten the crankcase 2 mounting screw and the crankcase 2
flange screw in the order of A to Z .
NOTE
Q
• When mounting the adhesive-applied parts, take care to fit
them to the mating parts.
• Assemble the adhesive-applied parts within ten minutes.
W1037643
Tightening torque
Crankcase 2 mounting
screw (
A to J )
137.3 to 147.1 N·m
14.0 to 15.0 kgf·m
101.3 to 108.5 lbf·ft
Crankcase 2 flange screw
(
K to Z )
49.0 to 55.9 N·m
5.0 to 5.7 kgf·m
36.1 to 41.2 lbf·ft
Flywheel housing
mounting screw
103.0 to 117.7 N·m
10.5 to 12.0 kgf·m
76.0 to 86.8 lbf·ft
(1) Crankcase 2
(2) Thrust Bearing
(3) Crankcase 1
(4) Liquid Gasket
(5) Crankshaft
(6) Jig (a) Front Cover Side
(b) Flywheel Housing Side
A to J :Crankcase 2 Mounting Screw
K to Z :Crankcase 2 Flange Screw
KiSC issued 06, 2008 A