Gradall 534B (9103-1390) Service Manual - Manual (Page 81)

4
544 HYDRAULIC PRESSURE TEST PORTS
T h e r e a r e s e v e n ( 7 ) m i n i - c h e c k t e s t p o r t s o n t h e
534B used to hold the gage while the circuit pressure
is being tested.
In order to gain access to the test ports, it will be
necessary to remove the screen cover over the battery
area, the engine cover, the cover over the valves
behind the cab, and the cover pan below the oper-
ator’s cab.
A - Used to test the main relief valve for the
steering relief valve which is located in the priority
valve.
B - Used to test the relief valve for the pilot circuit.
C - Used to test the main relief valve for the main
control valve bank.
A - Used to test the relief valves for the drive circuit
relief valves.
D & E - Used to test the circuit relief valves for the
tilt circuit.
F - Used to test the pressure in the accumulator
charge circuit.
G - Used to test the pressure being applied for
braking or inching.
SEE THE TESTING AND ADJUSTING SECTION
OF THE MANUAL FOR COMPLETE, STEP BYSTEP
DETAILS OF THE TESTING PROCEDURES.