Hydro Cat 5015B
Service Manual
WHEEL DRIVE SYSTEM
3
Turn the key switch OFF.
*
See Figure 10. Disconnect the Orange/Blue and the Green/White wires from the speed control. Connect
the wires to the leads from an ohmmeter.
*
Press the front of the drive pedal and watch the ohmmeter. The meter should read 0 ohms in neutral and
move smoothly up to 4500 ohms at full pedal deflection.
*
If meter reads as described above, the main potentiometer is O.K. - replace the speed control.
*
If the meter doesn’t read as described above, see
Speed Potentiometer Replacement and Adjustment
sections.
4
Turn the key switch ON and push down on the operator’s seat while watching the main contactor (see
Figure 11).
*
If the contacts in the main contactor move when the seat is pushed, go to step 6.
*
If the contacts in the main contactor do not move when the seat is pushed, go to step 5.
Speed Control
Orange/Blue
Green/White
FIGURE 10
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TROUBLESHOOTING (continued...)
66