Genie Industries Z-30/20, Руководство по обслуживанию, Страница: 136 / 150

7 - 26 Genie Z-30/20 Part No. 43063
Service Manual - Third Edition Section 7 - Repair Procedures
7-2
Valve Adjustments -
Function Manifold
How to Adjust the Primary Boom
Down Relief Valve
1 Connect a 0 to 3000 psi (0 to 206 bar) pressure
gauge to the test port on the function manifold.
2 Turn the key switch to ground control and lift up
the Emergency Stop Switch cover at the
ground controls and move the switch to the
ON
position.
3 Activate the function enable switch and hold the
primary boom down switch with the primary
boom fully lowered, and observe the pressure
reading on the pressure gauge.
4 Turn the machine off. Hold the relief valve and
remove the cap (item 14, 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
recommended.
6 Repeat steps 2 through 3 and recheck the
valve pressure.
Primary boom down relief valve specifications
Pressure 1400 psi
97 bar
MANIFOLDS
How to Adjust the Secondary
Boom Down Relief Valve
Perform this procedure with the
boom in the stowed position.
1 Connect a 0 to 3000 psi (0 to 206 bar) pressure
gauge to the test port on the function manifold.
2 Turn the key switch to ground control and lift up
the Emergency Stop Switch cover at the
ground controls and move the switch to the
ON
position.
3 Activate the function enable switch and hold the
secondary boom down switch with the
secondary boom fully lowered, and observe the
pressure reading on the pressure gauge.
4 Turn the machine off. Hold the relief valve and
remove the cap (item 13, 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
recommended.
6 Repeat steps 2 through 3 and recheck the
valve pressure.
Secondary boom down relief valve specifications
Pressure 1600 psi
110 bar