Genie GC-1530, Service Manual

Page: 93 / 270

Section 4 • Repair Procedures January 2012
Part No. 228901 GS-30 • GS-32 • GS-46 • GS-47 4 - 31
MANIFOLDS
3 Using a suitable lifting device, place and secure
the maximum rated load in the center of the
platform deck.
Maximum load, GS-4047
GS-4047 350 kg
4 Remove the platform controls from the platform.
5 Turn the key switch to platform control and pull
out the red Emergency Stop button to the on
position at both the ground and platform
controls.
6 Press and hold the lift function enable button
and the press the platform up button to raise
the platform 4 ft / 1.2 m above the stowed
position.
Result: The platform does not raise. Perform
steps 7 through 10 to increase the pressure in
small increments until the platform raises. Then
proceed to step 12.
Result: The platform raises. Perform steps 7
through 10 to decrease the pressure in small
increments until the platform does not raise.
Then follow steps 7 through 10 again to
increase the pressure in small increments until
the platform is able to raise.
7 Turn the machine off. Hold the lift pressure
selector valve with a wrench and remove the
cap (schematic item DM).
8 Adjust the internal hex socket. Turn it clockwise
to increase pressure and counterclockwise to
decrease pressure.
Tip-over hazard. Failure to adjust
the relief valves to specification
could result in the machine tipping
over, causing death or serious
injury. Do not adjust the relief
valve pressures higher than
specifications.
9 Install the relief valve cap.
10 Fully lower the platform
11 Using a suitable lifting device, add and secure
an additional 150 lbs / 68kg to the platform
deck.
12 Raise the platform.
Result: The platform does not raise. Proceed to
step 13.
Result: The platform raises. Repeat steps 7
through 10 to decrease the pressure in small
increments until the platform does not raise.
13 Fully lower the platform and using a suitable
lifting device, remove the weight from the
platform.
GS-4047
a lift pressure selector valve
b solenoid valve