Kubota B1220 Workshop Manual page 230

B1220, B1620, B1820, WSM
Relief Valve Setting Pressure
1. Open the bonnet and remove the front grille.
2. Disconnect the battery negative cable.
3. Remove the steering wheel (1) and then remove the meter
panel and panel under cover.
4. Remove the plug (3) of power steering body and then set the
relief valve pressure tester (use adaptor D).
5. Reassemble the meter panel and steering wheel (1).
6. Start the engine. After warming up, set the engine speed at
-1
approx. 2800 min (rpm).
7. Fully turn the steering wheel to the left end to read the relief
pressure. After reading, stop the engine.
8. If the pressure is not factory specification, loosen the lock nut
and adjust by adjusting screw (2).
(Reference)
• Replace the hydraulic pump if pressure does not rise in 9.30 to
9.80 MPa (94.9 to 100 kgf/cm
Power steering relief
Factory specification
valve setting pressure
Condition
• Engine speed
-1
Approx. 2800 min (rpm)
• Oil temperature
45 to 55 °C (113 to 131 °F)
(1) Steering Wheel
(2) Adjusting Screw
7-S8
STEERING
2
, 1350 to 1420 psi).
9.30 to 9.80 MPa
2
94.9 to 100 kgf/cm
1350 to 1420 psi
(3) Plug
9Y1210272STS0008US0
KiSC issued 07, 2011 A
(EU)