wsm STW37 Workshop Manual page 266

STW34, STW37, STW40, WSM
Disassembling Bi-speed Turn Hydraulic Clutch
1. Remove the internal snap ring (2), then remove the pressure
plate (5), three clutch discs (11) and three steel plates (4).
2. Remove the external snap ring (1) with clutch pack
disassembling tool (Code No.: 07916-53741), then remove the
collar (6) and spring (7).
3. Remove the piston (10).
(When reassembling)
• Apply transmission oil to the D-ring (9), and be careful not to
damage it.
• Direct the convex side of collar (6) to the spring (7) side.
• Install the external snap ring (1) so that its sharp edge comes
outside.
• Make sure the bi-speed turn hydraulic clutch is in position. Now
feed compressed air (about 5 kgf/cm
port of the counter shaft B to see if the piston (10) moves
smoothly. (See figure.)
• Install the internal snap ring (2) with its catch fitting the groove
of the clutch case (3). Be sure also that the sharp edge comes
outside.
• Stake the clutch piston mounting nuts firmly with punch, after
tightening them.
• Apply lock tight (Three Bond 1372D or equivalent) to the
threaded portion of clutch piston mounting nut.
Clutch piston mounting
Tightening torque
nuts
(1) External Snap Ring
(2) Internal Snap Ring
(3) Clutch Case
(4) Steel Plate
(5) Pressure Plate
(6) Collar
(7) Spring
3-S52
TRANSMISSION
2
) through the bi-speed turn
12 to 14 N·m
1.2 to 1.5 kgf·m
8.7 to 10 lbf·ft
(8) Shifter
(9) D-ring
(10) Piston
(11) Clutch Disc
(12) Clutch Piston Mounting Nut
(13) Spring Washer
9Y1211109TRS0043US0
KiSC issued 11, 2014 A