Checking Disassembling And Servicing; Checking; Power Steering Relief Valve - Kubota G26-2 Workshop Manual

G23-2, G26-2, WSM

4. CHECKING DISASSEMBLING AND SERVICING

[1] CHECKING

(1) Power Steering Relief Valve

Relief Valve Operating Pressure
1. Disconnect the power steering delivery hose L (or R) from
steering controller, and set pressure gauge and hose.
(Reference)
• Hose and adaptor size: 9/16-18UNF, 37 ° flare
1. Start the engine and set at maximum speed.
2. Fully turn the steering wheel to the left (or right) to check the
feeling which the steering wheel lightly locks. Read the relief
valve operating pressure when the steering wheel to the above
mentioned lock position by operation force at approximately 9.8
N (1.0 kgf, 2.2 lbf) of outer.
NOTE
• After set a pressure gauge, be sure to bleed air.
• Note that the pressure valve changes by the pump action of
the power steering controller when the steering operation
is continued after the steering wheel is lightly locked and
accurate relief valve pressure cannot be measured.
• After checking relief valve operating pressure, bleed the air
in the power steering hydraulic circuit.
Relief valve operating
Factory specification
pressure
(1) Power Steering Delivery Hose
(2) Power Steering Controller
4-S4
STEERING
8.34 to 8.82 MPa
85.0 to 90.0 kgf/cm
1210 to 1270 psi
(3) Pressure Gauge Hose
(4) T Type Adaptor
9Y1210892STS0004US0
KiSC issued 02, 2014 A
2