Labrie EXPERT Maintenance Manual page 303

Levers are delivered with the vehicle to make the pressure adjustment.
Before making any adjustments to the lifting arm proportional valve, you must first correctly set the
I :
MPORTANT
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
'DQIRVV 39* PDLQ UHOLHI YDOYH ULJKW DUP
'DQIRVV 39* PDLQ UHOLHI YDOYH OHIW DUP LI HTXLSSHG
dump valve R5P (if adjustable)
JULSSHU FORVH
JULSSHU RSHQ
JULSSHU F\OLQGHU KROGLQJ YDOYH WR NHHS RSHQ LI HTXLSSHG
DUP XS
DUP GRZQ
VWG DUP H[WHQG
VWG DUP UHWUDFW
ORQJ UHDFK DUP H[WHQG
ORQJ UHDFK DUP UHWUDFW ORQJ UHDFK DUP UHWUDFW
Figure 5-37 Proportional valve by section
Arm retract/extend
Arm up/down
Gripper close/open
N : A helper may be needed when adjusting arm pressure. Use all necessary safety precautions
OTE
around the vehicle at all times.
fonction
Hydraulic System 293
pressure setting
 “  SVL
 “  SVL
 “  SVL
 “  SVL
 “  SVL
 “  SVL
V\VWHP SUHVVXUH
V\VWHP SUHVVXUH
V\VWHP SUHVVXUH
V\VWHP SUHVVXUH
V\VWHP SUHVVXUH
V\VWHP SUHVVXUH V\VWHP SUHVVXUH