Part No. 72972
Genie GS-2046 and GS-2646 and GS-3246
5 - 19
June 2003
Section 5 • Troubleshooting Flow Charts
REV A
Brake Release
Function
Inoperative
Be sure, if the Error
Indicator light is on at
the platform controls,
you refer to the specific
chart that relates to the
error code that is
displayed on the ECM.
Be sure the circuit
breaker and fuse are
not tripped or blown.
Be sure the batteries
are fully charged and
properly connected.
Chart 10A
wheels
turn
Turn the brake release
valve (item A) clockwise
all the way and try to
rotate the wheels.
Chock the wheels at the
steer end of the
machine. Jack the non-
steer end of the
machine up
approximately 4 inches
(10 cm) and place jack
stands under the
machine for support.
Turn the brake release
knob (item A)
counterclockwise all the
way and pump the hand
pump (item C) fully
13-15 times or until
much resistance is felt.
Turn each wheel by
hand. Each wheel
should turn freely
without much effort.
wheels
turn
wheels
do not
turn
Rebuild or replace the
brakes OR replace the
brake release valve
(item A) OR consult the
Genie Industries Service
Department.
Attempt to drive the
machine in either
direction and have an
assistant try to rotate the
non steer wheels. This
will require 2 people.
wheels
turn
If machine still does not
drive at full speed with
the platform in the
stowed position, replace
the platform controls OR
replace the platform
controls circuit board U3
OR replace the ECM U5
OR consult the Genie
Industries Service
Department.
wheels
do not
turn
Plumb a 0 to 500 psi (35
bar) gauge into the hose
from the function
manifold to the brake.
Attempt to drive the
machine in either
direction and read the
pressure on the gauge.
less than
200 psi
Pressure is good.
Replace the brakes OR
consult the Genie
Industries Service
Department.
200 to
300 psi
Replace the shuttle
valve (item B) OR
replace the brake
release valve (item A)
OR the function
manifold or brake
release manifold may
have an internal defect
OR consult the Genie
Industries Service
Department.
Plumb a 0 to 500 psi (35
bar) gauge into the hose
from the function
manifold to the brake.
Attempt to drive the
machine in either
direction and read the
pressure on the gauge.
less than
200 psi
Pressure is good.
Replace the brakes OR
consult the Genie
Industries Service
Department.
200 to
300 psi
Replace the shuttle
valve (item B) OR
replace the brake
release valve (item A)
OR the function
manifold or brake
release manifold may
have an internal defect
OR consult the Genie
Industries Service
Department.
wheels
do not
turn
800-610-4101
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Summary of Contents for GS-2046
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