Taylor-Dunn B 50, Operation, T Roubleshooting And Replacement Parts Manual

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Curtis PMC Troubleshooting
Page 14
The REVERSE terminal is diagonally
opposite the reverse side of the
rocker on the switch
Battery Negative
A
OFF
mV
V
V
Hz
FLUKE 79 SERIES II MULTIMETER
F&R switch seen
from the rear
F&R switch seen from
the side depressed in
the REVERSE gear
The FORWARD terminal is
diagonally opposite the forward side
of the rocker on the switch
Battery Negative
A
OFF
mV
V
V
Hz
FLUKE 79 SERIES II MULTIMETER
F&R switch seen
from the rear
F&R switch seen from
the side depressed in
the FORWARD gear
Connect a voltmeter across the forward terminal of the
forward and reverse side of the F&R switch and battery
negative.
Close all interlock switches, turn the Key Switch ON,
and place the F&R Switch in forward.
Depress the accelerator pedal fully.
•
If the voltage is not at battery volts then the F&R
switch has failed. Stop trouble shooting here and
repair the problem. When the repair is completed,
completely retest the vehicle before lowering the
drive wheels to the ground.
Connect a voltmeter across the reverse terminal of the
forward and reverse side of the F&R switch and battery
negative.
Close all interlock switches, turn the Key Switch ON,
and place the F&R Switch in reverse.
Depress the accelerator pedal fully.
•
If the voltage is not at battery volts then the F&R
switch has failed. Stop trouble shooting here and
repair the problem. When the repair is completed,
completely retest the vehicle before lowering the
drive wheels to the ground.
•
If all tests in this section were good then check the
wiring from the F&R switch to the Forward and
Reverse solenoids and both the forward and reverse
solenoid coils. Stop trouble shooting here and repair
the problem. When the repair is completed,
completely retest the vehicle before lowering the
drive wheels to the ground.