Curtis PMC Troubleshooting
Page 23
FREEWHEEL DIODE
Remove the wires from the ‘B+’ and ‘M-’
terminals on the PMC control and perform the
following test:
Using the diode test function on the DMM check
for the presence of a diode across ‘B+’ and ‘M-
’ on the PMC control. Refer to Diode Figure 2.
If you do not know how to test for a diode, refer
test to a qualified technician.
•
If the diode is open or shorted, then the
PMC control must be replaced. 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.
STOP
Stop, do not continue. If you reached this point without a solution, then you may have an
unanticipated problem or have made an error during testing. It is important to review the
trouble shooting steps that have led to this point. The tests may need to be repeated.
B-
M-
A2
B+
#2
KSI
_
+
The reading shown is for illustration
only. The actual reading may vary.
1. Make sure the key-switch is in the “OFF” position, then remove
the key.
2. Place the forward-reverse switch in the center “OFF” position.
3. Set the park brake.
4. Place blocks under the front wheels to prevent vehicle movement.
5. Disconnect the main positive and negative cables at the batteries.
The rear drive wheels may rotate during some of the following tests.
Block the front wheels, raise the rear drive wheels off the ground,
and support the vehicle with jack stands. Failure to do so may cause
the vehicle to move and cause severe bodily injury and/or property
damage.
Rotating rear drive wheels are a potential hazard. Keep hands, arms,
legs and loose clothing away from the rear drive wheels while
conducting tests. Failure to do so may cause serious bodily injury.
Summary of Contents for B0-050-00
Page 2: ......
Page 6: ...TAYLOR DUNN...
Page 36: ...TAYLOR DUNN...
Page 65: ...Maintenance Service and Repair Steering Page 17 Steering Gear Exploded...
Page 66: ...TAYLOR DUNN...
Page 74: ...TAYLOR DUNN...
Page 82: ...TAYLOR DUNN...
Page 106: ...TAYLOR DUNN...
Page 118: ...TAYLOR DUNN...
Page 178: ...Illustrated Parts Parts Page 2 Front Axle and Suspension...
Page 180: ...Illustrated Parts Parts Page 4 Steering Linkage...
Page 182: ...Illustrated Parts Parts Page 6 Steering Gear...
Page 186: ...Illustrated Parts Parts Page 10 Rear Axle and Brakes...
Page 188: ...Illustrated Parts Parts Page 12 Rear Suspension...
Page 190: ...Illustrated Parts Parts Page 14 Motor 2 3 5 6 4 7 8 1 9 10 Armature 12...
Page 192: ...Illustrated Parts Parts Page 16 Brake linkage...
Page 194: ...Illustrated Parts Parts Page 18 Wheels and Tires Ref wheel hub 1 2 5 assembly 4 3 6 7 8 9 10...
Page 196: ...Illustrated Parts Parts Page 20 Instrument Panel Console...
Page 202: ...Illustrated Parts Parts Page 26 Miscellaneous Frame and Body...
Page 212: ...Illustrated Parts Parts Page 36 Decals...
Page 214: ...Illustrated Parts Parts Page 38 Sun Top and Windshield...
Page 216: ...Illustrated Parts Parts Page 40 Mirrors Multi Panel mirror Side mirror 9 11 2 1 2 5 4 6 7 3...
Page 218: ...Illustrated Parts Parts Page 42 Tool Box Luggage Rack 2 1 3 Tool box Luggage rack...
Page 220: ...Illustrated Parts Parts Page 44...
Page 221: ...TAYLOR DUNN...
Page 222: ...APPENDIX A Special Tools...
Page 229: ...TAYLOR DUNN...
Page 230: ...Appendix C...
Page 232: ......