How To Adjust The Secondary Boom Down Relief Valve; How To Adjust The Primary Boom Extend Relief Valve - Genie Z-30/20N Service And Repair Manual

September 2015
How to Adjust the Secondary How to Adj ust the Sec ondary Boom Down R elief Valv e
Boom Down 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 test port on the function
manifold.
2 Turn the key switch to ground control and pull
out the red Emergency Stop button to the on
position.
3 Move and hold the function enable toggle
switch to either side and move and hold the
secondary boom up/down toggle switch in the
down direction with the secondary boom fully
lowered. Observe the pressure reading on the
pressure gauge. Refer to Specifications,
Manifold Component Specifications.
4 Turn the machine off. Hold the secondary
boom down relief valve with a wrench and
remove the cap (item E).
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 and 3 to confirm the relief
valve pressure setting.
7 Remove the pressure gauge.
Part No. 1268498 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N
How to Adj ust the Primary Boom Ex tend R elief Valve How to Adjust the Primary 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 test port on the function
manifold.
2 Turn the key switch to ground control and pull
out the red Emergency Stop button to the on
position.
3 Move and hold the function enable toggle
switch to either side and move and hold the
primary boom extend/retract toggle switch in
the extend direction with the primary boom
fully extended. Observe the pressure reading
on the pressure gauge. Refer to
Specifications, Manifold Component
Specifications.
4 Turn the machine off. Hold the primary boom
extend relief valve with a wrench and remove
the cap (item G).
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 and 3 to confirm the relief
valve pressure setting.
7 Remove the pressure gauge.
Service and Repair Manual
Manifolds
49