Labrie EXPERT - Page 303

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