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Hydraulic System 293

Levers are delivered with the vehicle to make the pressure adjustment.

IMPORTANT: Before making any adjustments to the lifting arm proportional valve, you must first correctly set the

pressure in the dump valve (if equipped). For more information on adjusting dump valve pressure,

see Adjusting Vane Pump Relief Valves (if equipped) on page 288.

Refer to the hydraulic pressure table (see Figure 5-36) to adjust pressure for each function of the

lifting arm. Before performing the following procedure, make sure that all function levers and their

adjustment screws have been properly identified on the valve.

Figure 5-36

Hydraulic pressure table

Figure 5-37

Proportional valve by section

NOTE: A helper may be needed when adjusting arm pressure. Use all necessary safety precautions

around the vehicle at all times.

ORQJ UHDFK DUP UHWUDFW

V\VWHP SUHVVXUH

VWGDUPUHWUDFW V\VWHPSUHVVXUH

ORQJUHDFKDUPH[WHQG V\VWHPSUHVVXUH

DUPGRZQ V\VWHPSUHVVXUH

VWGDUPH[WHQG V\VWHPSUHVVXUH

JULSSHUF\OLQGHUKROGLQJYDOYHWRNHHSRSHQLIHTXLSSHG SVL

DUPXS V\VWHPSUHVVXUH

JULSSHUFORVH SVL

JULSSHURSHQ SVL

fonction pressure setting

'DQIRVV39*PDLQUHOLHIYDOYHULJKWDUP SVL

dump valve R5P (if adjustable) SVL

'DQIRVV39*PDLQUHOLHIYDOYHOHIWDUPLIHTXLSSHG SVL

ORQJ



UHDFK



DUP



UHWUDFW

V\VWHP



SUHVVXUH

Arm retract/extend

Arm up/down

Gripper close/open

Labrie EXPERT Service Manual

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