140 Hydraulic System
Figure 5-17
Relief valve on pump
Figure 5-18
Relief valve on chassis
To adjust the body vane pump relief valve:
1. Lock out and tag out the vehicle (see Locking Out and Tagging Out the Vehicle on page 12).
2. Install the 0–4000 psi pressure gauge on the quick-connect fitting located at the valve inlet cover.
3. Start the engine and engage the hydraulic pump.
4. Release the body vane pump relief.
To adjust the vane pump relief valve, tighten the main relief body valve adjustment screw (see
Adjusting Pressure on the Directional Control Valve on page 141).
5. Disconnect the packer extend proximity switch. Activate the packer extend until it reaches the
end of stroke.
Adjustment screw
Adjustment screw
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