Genie Z80/60 Service Manual page 172

Section 4 • Repair Procedures
MANIFOLDS
10 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.
11 Repeat steps 7 through 8 to confirm relief valve
pressure.
12 Start the engine and fully retract the primary
boom. Turn the engine off.
13 Install the limit switch and bracket assembly to
the primary boom.
14 Remove the pressure gauge.
How to Adjust the Secondary
Boom Up Relief Valve
1 Remove the cover retaining fasteners from the
secondary boom end cover. Remove the cover
from the machine.
2 Locate the wire connector for secondary boom
limit switch LSS2AO. Disconnect the connector.
Note: The secondary boom limit switch LSS2AO is
the upper limit switch located on the inside of the
riser plate at the engine side of the machine.
3 Install a jumper wire between pins 3 and 4 of
the LSS2AO Deutsch connector on the wire
harness end.
4 - 70
4 Connect a 0 to 5000 psi / 0 to 350 bar pressure
gauge to the LS port on the function manifold.
5 Start the engine from the ground controls.
6 Simultaneously push and hold the function
enable/high speed button and the secondary
boom up/extend button and fully raise the
secondary boom.
7 Continue holding the function enable/high
speed button and the secondary boom up/
extend button while observing the reading on
the pressure gauge. Refer to Section 2,
Specifications.
8 Turn the engine off. Use a wrench to hold the
relief valve and remove the cap (item B).
9 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.
10 Repeat steps 5 through 7 to confirm relief valve
pressure.
11 Remove the pressure gauge.
12 Remove the jumper wire from LSS2AO limit
switch connector. Connect the limit switch to
the wire harness.
13 Install the secondary boom end cover and
tighten the retaining fasteners.
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 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
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 3
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
Part No. 88619