1. Disconnect the power steering delivery pipe joint bolt.
2. Install the power steering pump adaptor (refer to “SPECIAL TOOLS” (see page G-55)) instead of joint bolt, and set a thread joint, cable and hydraulic pressure gauge.
3. Start the engine and set the engine speed at max. speed.
4. Fully turn the steering wheel to the left or right and read the pressure when the relief valve functions.
5. Stop the engine.
6. If the pressure is not within the factory specifications, check the pump delivery line, adjust the relief valve by the adjusting screw (1), or repair the power steering.
(Reference)
• One quarter turn of the adjusting screw (1) changes the relief setting pressure by approx. 1.3 MPa (13 kgf/cm2, 180 psi).
• When the adjusting screw (1) is turned clockwise, the relief valve setting pressure rises.
Condition
• Engine speed
Maximum
• Oil temperature
40 to 60 °C (104 to 140 °F)
