How To Adjust The Secondary Boom Extend Relief Valve; How To Adjust The Platform Manifold Relief Valve - Genie Z-80/60 Service And Repair Manual

September 2016
How to Adj ust the Sec ondary Boom Extend R elief Val ve
How to Adjust the Secondary
Boom Extend Relief Valve
Note: Perform this procedure with the secondary
boom fully raised.
Note: Refer to Function Manifold Component list to
locate the secondary boom extend relief valve.
1 Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to the ls port on the function
manifold.
2 Start the engine from the ground controls.
3 Simultaneously push and hold the function
enable/high speed button and the secondary
boom up/extend button with the secondary
boom fully raised and 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.
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.
Part No. 1268556
How to Adj ust the Pl atfor m M anifold Reli ef Val ve
How to Adjust the Platform
Manifold Relief Valve
Note: Perform this procedure with the boom in the
stowed position.
Note: Refer to Function Manifold Component list to
locate the platform manifold relief valve.
1 Connect a 0 to 5000 psi / 0 to 350 bar
pressure gauge to the ptest 2 port on the
function 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 Specifications, Hydraulic
Specifications.
4 Turn the engine off. Use a wrench to hold the
relief valve and remove the cap.
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.
Service and Repair Manual
Manifolds
91