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Hydraulic system – Gradall 534B (9020-7317) Service Manual User Manual

Page 84

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TILT CYLINDER
RESERVOIR FILTER
HYDRAULIC OIL RESERVOIR
LOW TORQUE INCHING SOLENOID VALVE
PILOT PUMP
PILOT RELIEF VALVE 500 psi
CROWD CYLINDER
HOIST (Lift) CYLINDERS (2)
COMPENSATING CYLINDER
PARALLEL SOLENOID VALVE
SERIES SOLENOID VALVE
SERIES/PARALLEL VALVE
STEERING CYLINDERS (2)
REAR HYDRAULIC DRIVE MOTORS
FWD/REV PILOT PRESSURE CONTROL VALVE
FWD/REV VALVE

GRADALL

LOED MATERIALS HANDLER

534B

SYSTEM OPERATION

CAVITATION SOLENOID VALVE
MAIN CONTROL VALVES
ORBITROL STEERING VALVE
(Under Cab at Base of Steering Post)
MAIN TANDEM
PRIORITY VALVE
DRIVE CIRCUIT MAIN RELIEF VALVE
BRAKE CIRCUIT ACCUMULATOR
SWAY CYLINDER
BRAKE FLUID RESERVOIR
POTENTIOMETER (Under Seat)
LOW TORQUE INCHING SWITCH
(Under Seat)
FORWARD/REVERSE SWITCHES
(Under Dash Panel)

BRAKE BOOSTER & MASTER CYLINDER

8

A-
B-
C-
D-
E-
F-
G-
H-
J-
K-
L-
M -
N-
O-
P-
Q-

R-
S-
T-

U-
V-
W-
X-
Y-
Z-
AA-
BB-

CC-

DD-

H Y D R A U L I C S Y S T E M

V i e w o f P a n e l ( R e a r o f C a b )