Part No. 133554
Genie TZ-34/20
27
Operator’s Manual
Fourth Edition • Fourth Printing
32 Open the manifold cover on the ground controls
side of the machine.
33 Locate the primary
boom up/down valve.
34 Push the thumbscrew in
and turn to release.
Result: The thumbscrew
should move easily.
35 Pull the thumbscrew all
the way out and turn.
Result: The thumbscrew
should move easily and
stay in position.
36 Turn the thumbscrew
and release.
37 Push the thumbscrew all the way in and turn.
Result: The thumbscrew should move easily
and stay in position.
38 Operate the hand pump on top of the power
unit cover.
Result: The primary boom should lower.
39 Turn the thumbscrew and release.
40 To reset the valve, push the thumbscrew
halfway in and turn.
Result: The thumbscrew should move easily
and stay in position.
41 Test the remaining valves.
Result: Each valve thumbscrew should move
easily and stay in position.
Note: Make sure to properly reset each valve. The
machine will not operate unless the valves are
reset.
Test Manual Operation of Turntable Rotate
Brake
Note: The turntable rotation brake valve is located
under the opposite side of the machine cover.
42 Open the manifold cover
located on the roadside
of the machine.
43 Locate the turntable
rotation brake valve.
44 Rotate counterclockwise and pull out until the
button pops into place.
45 Locate the turntable rotate valve.
46 Perform steps 34 through 37 on the turntable
rotate valve as explained in the previous test
section entitled
“Test Manual Operation of
Functions”
.
47 Operate the hand pump on top of the power unit
cover.
Result: Turntable should begin to rotate.
Turntable rotate
Secondary boom
up/down
Primary boom
up/down
Primary boom
extend/retract
Inspections
Turntable rotate
brake valve
Normal operating
position (halfway in)
Thumbscrew
all the way in
Thumbscrew
all the way out
