Genie S-80 Service Manual page 135

February 2012
How to Adjust the Boom Extend
Relief Valve
Note: Perform this procedure with the boom in the
stowed position.
1 Connect a 0 to 3000 psi / 0 to 200 bar pressure
gauge to the diagnostic nipple (
function manifold.
2 Start the engine from the ground controls.
3 Hold the function enable/rpm select toggle
switch to the high idle position and activate and
hold the boom extend toggle switch with the
boom fully extended. Observe the pressure
reading on the pressure gauge. Refer to
Section 2, Hydraulic Specifications.
4 Turn the engine off. Use a wrench to hold the
relief valve and remove the cap (item SO) on
the function manifold.
5 Adjust the internal hex socket. Turn it clockwise
to increase the pressure or counterclockwise to
decrease the pressure. Then install the relief
valve cap.
Tip-over hazard. Do not adjust
the relief valves higher than
specified.
6 Repeat steps 2 through 5 to confirm relief valve
pressure.
Part No. 122985
port) on the
PTEST
S-80 • S-85 • S-80X
Section 4 • Repair Procedures
MANIFOLDS
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