Bi-Speed Valve - Kubota WSM STV32 Workshop Manual

STV32 · STV36 · STV40, WSM

(2) Bi-speed Valve

3) Hydraulic Pump Running-in
After reassembly, perform running-in operation in the following
manner, and check the pump for abnormality before use. If the
pump temperature should rise noticeably during running-in,
recheck should be performed.
1. Install the hydraulic pump to the tractor, and mount the suction
pipe and delivery pipe securely.
2. Set the engine speed at 1300 to 1500
the hydraulic pump at no load for about 10 minutes.
3. Set the engine speed at 2000 to 2200
hydraulic pump applied with 2.94 MPa (30
4.90 MPa (50 , 711 psi) pressure, operate it for approx.
15 minutes.
4. With the engine set to maximum speed, fully turn the steering
wheel to the left or right, then actuate the relief valve five times
for 25 seconds (one time 5 seconds) (for power steering
pump.)
5. Stop the engine, then loosen the feedback rod lock nut by 5
turns and screw in the adjusting nut.
6. With the engine set to maximum speed, raise the position
control lever and actuate the relief valve five times for 25
seconds (one time 5 seconds) (for 3P hydraulic pump).
Draining Transmission Fluid
See page 1-S20.
Removing Bi-speed Valve
1. Disconnect the 4P connector (3) from the bi-speed valve (2).
2. Disconnect the PTO delivery hose (1) and bi-speed delivery
pipe (4) from the bi-speed valve (2).
3. Remove the mounting screws (5) and remove the bi-speed
valve (2).
(When reassembling)
A Apply liquid gasket (Three Bond 1208D or equivalent) to the
bi-speed valve case.)
PTO delivery hose (1)
retaining nut
Bi-speed delivery pipe
Tightening torque
(4) retaining nut
Bi-speed valve
mounting screw
(1) PTO Delivery Hose
(2) Bi-speed Valve
(3) 4P Connector
8-S18
HYDRAULIC SYSTEM
(rpm), and operate
(rpm), and with the
, 427 psi) to
0000007858E
0000007859E
15 to 17
1.5 to 1.75
10.8 to 12.7 ft-lbs
30 to 49
3.0 to 5.0
21.7 to 36.2 ft-lbs
23.5 to 27.5
2.4 to 2.8
17.4 to 20.3 ft-lbs
(4) Bi-speed Delivery Pipe
(5) Mounting Screw
0000007860E
KiSC issued 04, 2006 A