Test The Drive Brakes - Terex Genie GS-1530 Service Manual

Section 3 • Scheduled Maintenance Procedures
CHECKLIST B PROCEDURES
B-7

Test the Drive Brakes

Genie requires that this procedure be performed
every 250 hours or quarterly, whichever comes
first.
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, with the
platform extension deck fully retracted and the
platform 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 red Emergency Stop button to the on
position at both the ground and platform
controls.
3 Lower the platform to the stowed position.
4 Press the drive function select button.
Stop
®
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Illustration 1
a drive function select button BN8
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.
3 - 14
6 Bring the machine to top drive speed before
reaching the test line. Release the function
enable switch or the joystick when your
reference point on the machine crosses the
test line.
7 Measure the distance between the test line and
your machine reference point. Refer to Section
2, Specifications .
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.
Note: 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.
9 Locate the drive forward/reverse valve on the
function manifold. Refer to Illustrations 2 and 3.
a
GS-1530 • GS-1532 • GS-1930 • GS-1932
GS-30 • GS-32 • GS-46
Electrocution/burn hazard. Contact
with electrically charged circuits
could result in death or serious
injury. Remove all rings, watches
and other jewelry.
Illustration 2
a drive forward/reserve valve
Part No. 96316
June 2009
REV F
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