Labrie Pendpac WITTKE RETRO FL, Maintenance Manual

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102
Maintenance
To adjust the service hoist pressure:
1.
Loosen locknut.
2.
Using and allen wrench, turn the adjustment screw clockwise ½ turn.
3.
Tighten locknut.
Figure 3-43 Service hoist pump
Figure 3-44 Adjustment screw
Hydraulic System (Residential Type Fl)
The hydraulic system on a residential Front Loader with the cart tipper option includes:
Š
Priority Valve,
Š
Directional Control Valves,
Š
Pressure Relief Valves, and
Š
Work Circuits.
Priority Valve
The priority valve cartridge (see Figure 3-45) divides hydraulic oil into two lines: a priority line for
the auxiliary hydraulic attachment (i.e. cart tipper) and a bypass line for the hopper top door, tailgate,
arms, forks and pack circuits. The cartridge supplies 3 GPM to the main valve inlet section. The
remaining oil is passed to the mid-inlet section in the main valve bank.