Genie Z-45/22 Service Manual page 196

Service Manual - Second Edition
800-610-4101
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How to Override a Valve
A hydraulic valve may need to be manually
overridden to troubleshoot a malfunction. Each
proportional boom function uses a variable
position proportional valve and a three position
directional valve. Example: one position for boom
up, one position for neutral and one position for
boom down. The platform rotate and level
functions use a three position valve and a two
position poppet valve. The three position valves
and the proportional valves can be manually
overridden. To identify the manifold valves see
10-1 Function Manifold Components in this
section.
1 Push the button on the end of the valve in
¼ inch (6 mm).
2 Move the ground control function switch for the
function being overridden to operate function.
Collision Hazard. Impact with
moving boom components may
cause death or serious injury. Use
extreme caution when overriding a
boom function and know the
direction of intended travel.
c
a
b
c
Part No. 32960
directional valves
proportional valves
function manifold
How to Check the Resistance of a
Valve Coil
1 Turn the keyswitch to the off position and
disconnect the wires from the valve coil to be
tested.
2 Connect the leads from an ohmmeter to the
valve coil terminals.
Specifications
Valve
Proportional solenoid valve
3 pos 4 way directional valve
a
Normally closed
poppet valve
b
Genie Z-45/22
Section 7 - Repair Procedures
FUNCTION MANIFOLD
Resistance
5Ω
4.5Ω
7Ω
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