Checking And Adjusting; Steering Controller - Kubota M5640SU Workshop Manual

M5640SU, M5640DT-SU, WSM

4. CHECKING AND ADJUSTING

[1] STEERING CONTROLLER

Relief Valve Setting Pressure
1. Disconnect the delivery hose 1 (or 2) from steering cylinder and
set a pressure gauge (3) (Code No. 07916-50321) between
them using power
07916-54021), joint (Code No. 07916-50401) and cable (Code
No. 07916-50331).
2. Start the engine and set the engine speed at maximum speed.
3. Fully turn the steering wheel to the left or right and read the
pressure when the relief valve operates.
4. Return the steering wheel to the front position and read the
pressure gauge when the steering control valve is in neutral.
5. If the difference between the relief pressure and the pressure in
neutral is not within the factory specifications, adjust the relief
pressure by the adjust plug (5).
Condition
• Engine speed :
Maximum
• Oil temperature :
45 to 55 °C (113 to 131 °F)
IMPORTANT
(Air Bleeding)
• Start the engine, then turn the steering wheel slowly in both
directions all the way alternately a few times, and stop the
engine.
Relief valve setting
Factory spec.
pressure
(1) Power Steering Adaptor
(2) Cable
(3) Pressure Gauge
7-S4
steering adaptor (1)
18.6 MPa
2
190 kgf/cm
2700 psi
(4) Joint
(5) Adjust Plug for Relief Valve
9Y1210365STS0004US0
STEERING
(Code No.
KiSC issued 07, 2009 A