Kubota WSM STa-30, Workshop Manual

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7-S8
ST
α
-30 · ST
α
-35, WSM BI-SPEED TURN
Procedure 3: Checking the bi-speed control output
1. Switch off the ignition key (main switch).
2. Switch on the ignition key (main switch) again to start the engine. Enter the ordinary control mode.
3. Turn on the bi-speed mode and turn the tractor right and left to make sure the bi-speed control functions.
4. Turn off the bi-speed mode and turn the tractor right and left to make sure the bi-speed control does not function.
Procedure 4: Exiting from the bi-speed restraint check mode
1. Turn off the main switch.
2. The bi-speed restraint mode can be accepted through the above two procedures “Checking the travelling speed
sensor input” and “Checking the bi-speed control output”.
[2] DISASSEMBLING AND ASSEMBLING
(1) Bi-speed Solenoid Valve
Draining Transmission Fluid
1. See Page G-13.
W1019911
Removing Bi-speed Solenoid Valve
1. Remove the bi-speed solenoid valve delivery pipe (2) retaining
nut from solenoid valve (1).
2. Remove the pipe clamp (3).
3. Remove the bi-speed solenoid valve assembly.
(When reassembling)
• Apply liquid gasket (Three Bond 1208D or equivalent) to the bi-
speed solenoid valve case.
• Be sure to fix the O-ring (4).
W1019978
Bi-speed Solenoid Valve Assembling
1. Remove the plug (9) and draw out the unload valve (7) and
unload spring (8).
2. Loosen the lock nut (6) and unscrew the adjusting screw (5).
3. Draw out the relief valve (3) and relief valve spring (4).
4. Remove the solenoid valve mounting screw and remove the
solenoid valve (2).
(When reassembling)
• Be sure to adjust the relief valve setting pressure, if remove the
adjusting screw (5).
W1020326
Tightening torque
Bi-speed valve delivery
pipe retaining nut
34 to 39 N·m
3.5 to 4.0 kgf·m
25.3 to 28.9 ft-lbs
Bi-speed solenoid valve
mounting screw
23.5 to 27.5 N·m
2.4 to 2.8 kgf·m
17.4 to 20.3 ft-lbs
(1) Bi-speed Solenoid Valve
(2) Bi-speed Solenoid Valve Delivery
Pipe
(3) Clamp
(4) O-ring
(1) Orifice Valve
(2) Solenoid Valve
(3) Relief Valve
(4) Relief Valve Spring
(5) Adjusting Screw (6) Lock Nut
(7) Unload Valve
(8) Unload Valve Spring
(9) Plug
KiSC issued 11, 2006 A