STV32 · STV36 · STV40, WSM TRANSMISSION
3-S30
Hydraulic Pipe and HST Filter Bracket
1. Remove the charge hose (4) and PTO delivery hose (5).
2. Remove the charge pipe (3).
3. Remove the filter bracket (2) with the filter (1).
4. Disconnect the 3P delivery pipe (6) from the hydraulic cylinder.
(When reassembling)
A Be sure to fit four O-rings (7) to the charge pipe (3).
Separating Clutch Housing Case from Hydrostatic Transmission
(HST)
1. Place a disassembly stand under the clutch housing (3) and
mid case (1).
2. Support the clutch housing (3) with the lift strap.
3. Remove the clutch housing mounting screws and nuts to
separate the clutch housing (3) from the HST (2).
4. Remove the 3P delivery pipe (4) and suction pipe (5) from the
clutch housing (3).
(When reassembling)
A Apply liquid gasket (Three Bond 1208D or equivalent) to the
joint face of the clutch housing and HST.
Tightening torque
Filter bracket mounting
screw
77.5 to 90.2
7.9 to 9.2
57.2 to 66.5 ft-lbs
Charge hose retaining
nut (Controller side)
24.5 to 29.4
2.5 to 3.0
18.1 to 21.7 ft-lbs
3P delivery pipe
retaining nut
88.2 to 117.6
9.0 to 12.0
65.1 to 86.8 ft-lbs
PTO delivery hose
retaining nut (Valve
side)
15 to 17
1.5 to 1.75
10.8 to 12.7 ft-lbs
Installation angle of
charge hose (4): b
Factory spec.
0.52 rad
30 deg.
(1) HST Oil Filter (6) 3P Delivery Pipe
(2) Filter Bracket (7) O-ring
(3) Charge Pipe
(4) Charge Hose b: Installation Angle of Charge
(5) PTO Delivery Hose Hose (4)
0000007555E
Tightening torque
Clutch housing
mounting screw and nut
39.3 to 44.1
4.0 to 4.5
29.0 to 32.5 ft-lbs
(1) Mid Case (3) Clutch Housing
(2) HST (4) 3P Delivery Pipe
(Hydrostatic Transmission) (5) Suction Pipe
0000007556E
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