1. Remove the plug from hydraulic cylinder.
2. Connect the cable and pressure gauge to hydraulic cylinder (thread size Rp (PS) 1/4).
3. Remove the position control lever stopper (1).
4. Start the engine and set at maximum speed.
5. Move the position control lever all way up to operate the relief valve and read the gauge.
6. If the pressure is not within the factory specifications, remove the relief valve plug (2) of front hydraulic block (3) and adjust with the adjusting shims (4).
7. After the relief valve setting pressure test, reset the position control lever stopper firmly.
Condition
• Engine speed
Maximum
• Oil temperature
40 to 60 °C (104 to 140 °F)
(Reference)
• Thickness of shims (4)
0.1 mm (0.004 in.)
0.2 mm (0.008 in.)
0.4 mm (0.02 in.)
• Pressure change per 0.1 mm (0.004 in.) shim Approx. 260 kPa (2.7 kgf/cm2, 38 psi)
