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 B0-012-10
Page 2: ......
Page 26: ...TAYLOR DUNN...
Page 53: ...Maintenance Service and Repair Steering Page 15 Exploded View of Steering Gear...
Page 54: ...TAYLOR DUNN...
Page 72: ...TAYLOR DUNN...
Page 85: ...Maintenance Service and Repair F2 F3 Transmission Page 13 EXPLODED VIEW...
Page 86: ...TAYLOR DUNN...
Page 94: ...TAYLOR DUNN...
Page 100: ...TAYLOR DUNN...
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Page 172: ...Illustrated Parts Parts Page 2 Front Axle...
Page 176: ...Illustrated Parts Parts Page 6 STEERING...
Page 178: ...Illustrated Parts Parts Page 8 STEERING GEAR...
Page 180: ...Illustrated Parts Parts Page 10 PARK BRAKE...
Page 182: ...Illustrated Parts Parts Page 12 DEADMAN SEAT BRAKE optional...
Page 184: ...Illustrated Parts Parts Page 14 MASTER CYLINDER BRAKE LINKAGE...
Page 186: ...Illustrated Parts Parts Page 16 HYDRAULIC BRAKE LINES...
Page 188: ...Illustrated Parts Parts Page 18 FRONT BRAKES optional REAR BRAKES...
Page 195: ...Illustrated Parts Parts Page 25 This page intentionally left blank...
Page 202: ...Illustrated Parts Parts Page 32 POWER TRACTION DRIVE...
Page 204: ...Illustrated Parts Parts Page 34 REAR DIFFERENTIAL...
Page 208: ...Illustrated Parts Parts Page 38 Tires Wheels 10 Ref wheel hub 1 2 5 assembly 4 3 6 7 8 9...
Page 210: ...Illustrated Parts Parts Page 40 CONTROL PANEL...
Page 212: ...Illustrated Parts Parts Page 42 CONTROL PANEL EE...
Page 216: ...Illustrated Parts Parts Page 46 DECALS MISCELLANEOUS STANDARD PARTS...
Page 218: ...Illustrated Parts Parts Page 48 MISCELLANEOUS STANDARD PARTS Cont d...
Page 220: ...Illustrated Parts Parts Page 50 Options...
Page 222: ...Illustrated Parts Parts Page 52...
Page 224: ...Illustrated Parts Parts Page 54...
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Page 246: ...TAYLOR DUNN...