Taylor-Dunn ET 1-50 Operation And Maintenance Manual page 110

ELECTRICAL SYSlEM
"TAYLOR•DUNN
Figure H - 13 - Motor and motor terminals
Turn the key switch on. Depress the accelerator pedal.
Connect the positive(+) V.O.M. lead to the motor A1 terminal (see Figure H - 13). The V.O.M. should
read positive(+) battery voltage.
If reading is lower than battery voltage, go to
11
Testing Main Power lnput.
11
Connect the positive (+) V.O.M. lead to the motor A2 terminal. The V.O.M. should read positive (+) battery
voltage.
If the A 1 reading is good and A2 reading is lower than battery voltage, the motor armature or brushes are bad.
Repair or replace armature and/or brushes (see
11
Repairing the Motor,
11
this section).
Connect positive(+) V.O.M. lead to the motor A 1 terminal.
Put Forward/Reverse Selector Lever (henceforth referred to as selector lever) in forward.
If the forward contactor does not click, go to "Testing Main Power lnput.
11
If the forward contactor clicks, depress the accelerator pedal.
Test the voltages at the motor S 1 and S2 terminals. Both should read between O and 72 volts,
depending on accelerator pedal position.
If S1 reading is lower than battery voltage, go to "Testing Main Power Input."
If the S1 reading is good and S2 reading is lower than battery voltage, the motor field is open.
Repair or replace the motor.
Repeat this procedure with the selector lever in reverse.
20 - ELECTRICAL
TAYLOR-DUNN: ET 1-50