How To Adjust The Boom Extend Relief Valve - Genie S-80 Service Manual

February 2017
How to Adj ust the Boom Ex tend R elief Valve
How to Adjust the Boom Extend
Relief Valve
Note: Perform this procedure with the boom in the
stowed position.
Note: Refer to Function Manifold Component list to
locate the boom extend relief valve.
1 Connect a 0 to 3000 psi / 0 to 200 bar
pressure gauge to the diagnostic nipple
located next to the auxiliary pump.
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 Specifications, Hydraulic
Specifications.
4 Turn the engine off. Use a wrench to hold the
relief valve and remove the cap 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 valve higher than
specified.
6 Repeat steps 2 through 5 and recheck relief
valve pressure.
7 Remove the pressure gauge.
Part No. 1259369GT S-80 • S-85 • S-80X
Service Manual
Manifolds
119