Repair manual

RD 27 Troubleshooting the Vibration System
wc_tx000953gb.fm 77
5.9 Checking Vibration System Operating and Relief Pressure
Prerequisites  350 bar (5000 psi) pressure gauge
 Functioning vibration switch
Procedure Perform the procedure below to check the vibration system operating pressure.
1. Run the machine so that the hydraulic oil is at operating temperature; approxi-
mately 43±5°C (110±10°F).
2. Stop the engine.
3. Connect the 350 bar (5000 psi) gauge to the vibration manifold (a).
4. Start the engine. Leave the brake push button in the engaged position.
5. Move the throttle lever to the 66 Hz (fast) position.
6. Move the vibration mode selector switch to the single-drum position.
7. Move the forward/reverse control (joystick) slightly forward (just out of neutral).
The vibration will not turn on when the joystick is in the neutral position.
This procedure continues on the next page.