Service manual

4 - 12 Genie GS-1530 & Genie GS-1930 Part No. 39528
Service Manual - First EditionSection 4 - Scheduled Maintenance Procedures
a
TABLE B PROCEDURES
B-7
Test the Drive Brakes
Proper brake action is essential to safe machine
operation. The drive brake function should operate
smoothly, free of hesitation, jerking and unusual
noise. Hydraulically-released individual wheel
brakes can appear to operate normally when not
fully operational.
Perform this procedure with the
machine on a firm, level surface
that is free of obstructions.
Be sure the platform extension
deck is fully retracted and the
platform is in the stowed position.
1 Mark a test line on the ground for reference.
2 Turn the key switch to platform control and pull
out the Emergency Stop button to the ON
position at both the ground and platform
controls.
3 Lower the platform to the stowed position.
4 Move the lift/drive selector switch to the drive
position (if equipped).
5 Choose a point on the machine; i.e., contact
patch of a tire, as a visual reference for use
when crossing the test line.
6 Bring the machine to full drive speed before
reaching the test line. Release the function
enable switch or the joystick on the platform
controls when your reference point on the
machine crosses the test line.
7 Measure the distance between the test line and
your machine reference point.
Braking: paved surface
Stopping distance 2 ft 0.6 m
Result: The machine stops within the specified
braking distance. No action required.
Result: The machine does not stop within the
specified braking distance. Proceed to step 8
and determine if the machine is equipped with
a dynamic braking valve.
The brakes must be able to hold
the machine on any slope it is able
to climb.
8 Disconnect the battery pack from the machine.
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
9 Locate the drive forward/reverse valve on the
function manifold. Refer to Illustrations 1.
a drive forward/reserve valve