wsm STW37 Workshop Manual page 403

STW34, STW37, STW40, WSM
(4) Regulator Valve
Checking Bi-speed / PTO System Pressure
1. Start the engine and warm up the transmission fluid, and then
stop the engine.
2. Remove the bi-speed system pressure checking port (PT 1/8)
(1) plug (PT 1/8) on the bi-speed valve (2).
3. Install the long connector (code: 07916-60831) to checking port
(1), and then install the threaded joint, cable and pressure
gauge.
4. Start the engine and set the idling speed.
5. Measure the pressure.
6. If the measurement is not within factory specifications, adjust
the pressure reducing valve adjustor (4) on the regulator valve
(5).
Bi-speed / PTO system
Factory specification
pressure
Condition
• Engine speed:
Idling speed
• Oil temperature:
40 to 60 °C (104 to 140 °F)
(Reference)
• Turn to clockwise direction → Pressure is increased
• Turn to counterclockwise direction → Pressure is decreased
(1) System Pressure Checking Port
(PT 1/8)
(2) Bi-speed Valve
Relief Valve Setting Pressure
1. Remove the power steering delivery pipe from hydraulic pump.
2. Assemble the power steering delivery pipe (1) using a adaptor
E (2) instead of original joint.
3. Start the engine. After warming up, set the engine speed at
maximum.
4. Fully turn the steering wheel to the left end to read the relief
pressure. After reading, stop the engine.
5. If the pressure is not within the factory specification, check the
pump delivery line and replace the steering controller assembly.
Power steering relief
Factory specification
valve setting pressure
Condition
• Engine speed:
Maximum
• Oil temperature:
40 to 60 °C (104 to 140 °F)
(1) Power Steering Delivery Pipe
8-S10
HYDRAULIC SYSTEM
1.76 to 1.86 MPa
2
18 to 19 kgf/cm
256 to 270 psi
(3) Long Connector
(Code: 07916-60831)
(4) Pressure Reducing Valve Adjustor
(5) Regulator Valve
9Y1211109HYS0009US0
12.5 to 13.5 MPa
2
128 to 137 kgf/cm
1820 to 1950 psi
(2) Adaptor E
9Y1211109HYS0010US0
KiSC issued 11, 2014 A