Kubota WSM STa-30, Workshop Manual

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7-S10
ST
α
-30 · ST
α
-35, WSM BI-SPEED TURN
Disassembling Bi-speed Turn Hydraulic Clutch
1. Remove the internal snap ring (2), then take out the three
pressure plates (5), three clutch discs (10) and three steel plates
(4).
2. Remove the external snap ring (1) with clutch pack
disassembling tool (Code No.: 07916-53741), then take out the
collar (7) and spring (8).
(When reassembling)
• Apply gear oil to the O-ring (11), (12) and D-ring (13), and take
care not to damage them.
• Direct the convex side of collar (7) to the spring (8) side.
• Install the external snap ring (1) with its direction of sharp edge
face is 22T gear side (14).
• Make sure the bi-speed turn hydraulic clutch is in position. Now
feed compressed air (about 5 kgf/cm
2
) through the bi-speed turn
port of the counter shaft B (15) to see if the piston (9) moves
smoothly.
• Install the internal snap ring (2) with its catch fitting the groove of
the clutch case (3). Be sure also that the sharp edge face is on
the other side of the pressure plate (5).
• Stake the clutch piston mounting nuts firmly with punch, after
tightening them.
W1021754
Tightening torque
Clutch piston mounting
nuts
9.8 to 11.8 N·m
1.0 to 1.2 kgf·m
7.2 to 8.7 ft-lbs
(1) External Snap Ring
(2) Internal Snap Ring
(3) Clutch Case
(4) Steel Plate
(5) Pressure Plate
(6) External Snap Ring
(7) Collar
(8) Spring (9) Piston
(10) Clutch Disc
(11) O-ring
(12) O-ring
(13) D-ring
(14) 22T Gear
(15) Counter Shaft B
KiSC issued 11, 2006 A