136 Hydraulic System
Figure 5-12
Steel wire on yoke
NOTE: Use the following parts: QUB00700 (bolt) and 154503 (steel wire).
Priming a New Pump
To prevent cavitation or air in the hydraulic system after installing a new pump or even when flushing
the hydraulic system, make sure to prime the pump before starting the engine.
Apply the following procedure for any new installed pump:
1. Make sure the parking brake is applied and the vehicle is tagged out for maintenance purposes
(refer to “Locking Out and Tagging Out the Vehicle” on page 12).
2. With the ball valve closed, fill the suction line before installing it on the pump.
3. Fill the pump housing with new oil.
4. Reinstall the pressure hose on the pump housing.
5. Open the ball valve on the suction line.
6. Crank the engine repeatedly — about five times — without letting it start in order to fill the
suction hose and the pump with hydraulic oil and to push the air back into the tank.
Danger!
Apply the lockout / tagout procedure at all times when maintenance or inspection is
carried out on the vehicle.
Steel wire
Bolt
Drive shaft
Yoke
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