Genie Z80/60 Service Manual page 174

Section 4 • Repair Procedures
MANIFOLDS
4 Turn the engine off. Use a wrench to hold the
relief valve and remove the cap (item Q).
5 Adjust the internal hex socket. Turn it clockwise
to increase the pressure or counterclockwise to
decrease the pressure. Install the relief valve
cap.
Tip-over hazard. Do not adjust
the relief valve higher than
specified.
6 Repeat steps 2 through 5 to confirm relief valve
pressure.
7 Remove the pressure gauge.
How to Adjust the Platform
Manifold Relief Valve
Note: Perform this procedure with the boom in the
stowed position.
1 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to the 2 port on the function
PTEST
manifold.
2 Start the engine from the ground controls.
3 Simultaneously push and hold the function
enable/high speed button and the jib boom
down button with the jib boom fully lowered.
Observe the reading on the pressure gauge.
Refer to Section 2, Specifications.
4 - 72
4 Turn the engine off. Use a wrench to hold the
relief valve and remove the cap (item AG).
5 Adjust the internal hex socket. Turn it clockwise
to increase the pressure or counterclockwise to
decrease the pressure. Install the relief valve
cap.
Tip-over hazard. Do not adjust
the relief valve higher than
specified.
6 Repeat steps 2 through 3 to confirm relief valve
pressure.
7 Remove the pressure gauge.
Z-80/60
June 2011
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
REV D REV E
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
Part No. 88619