
Curtis PMC Troubleshooting
Page 19
SYMPTOMS
GO TO
Ø
Runs slow in both directions plus high armature and field current in both
directions. NOTE: Armature and field current should be equal.
MOTOR
Ø
Runs slow in both directions plus high armature current in both directions.
NOTE: Field current will be very low.
SOLENOIDS
Ø
Ø
Runs normal in one direction only plus runs slow or lacks power in the opposite
direction with high armature current in the opposite direction or;
Accelerates slowly and exceeds normal speed in the opposite direction with high
armature current only. NOTE: Field current will be very low in the opposite
direction.
SOLENOIDS
Ø
Accelerates slowly and exceeds normal speed in both directions plus high
armature current. NOTE: Field current will be very low.
SOLENOIDS
Ø
Full speed only.
PMC CONTROL
Ø
Does not run in either direction plus there is noise from motor (hum or whine)
with high field current and low armature current.
PLUGGING DIODE
Ø
Excessive spark when connecting battery
ISO
Ø
Does not run or runs very slow with low motor current and high battery current.
FREEWHEEL DIODE
Ø
Jumps into high speed when direction is selected after depressing the accelerator
pedal.
HPD
SYMPTOM TROUBLESHOOTING GUIDE
This section is specific to the symptoms listed below. Each troubleshooting sequence assumes
that all listed symptoms are present. Do not use this section unless the truck has all listed
symptoms.
Special Troubleshooting
Table of Contents
PMC CONTROL .................................................................... 22
PLUGGING DIODE .............................................................. 25
FREEWHEEL DIODE ........................................................... 26
ISO ........................................................................................... 27
SOLENOIDS .......................................................................... 29
MOTOR .................................................................................. 32
Summary of Contents for C0-014-32
Page 2: ......
Page 12: ...TAYLOR DUNN ...
Page 24: ...TAYLOR DUNN ...
Page 32: ...TAYLOR DUNN ...
Page 33: ...TABLE OF CONTENTS Front End Alignment 2 Replace the Front Fork 3 Adjust Steering Chains 4 ...
Page 50: ...TAYLOR DUNN ...
Page 63: ...Maintenance Service and Repair F2 F3 Transmission Page 13 EXPLODED VIEW ...
Page 64: ...TAYLOR DUNN ...
Page 78: ...TAYLOR DUNN ...
Page 131: ......
Page 134: ...Illustrated Parts Parts Page 2 Front Axle ...
Page 136: ...Illustrated Parts Parts Page 4 Front Fork ...
Page 138: ...Illustrated Parts Parts Page 6 Steering Linkage ...
Page 142: ...Illustrated Parts Parts Page 10 Transmission Differential Case ...
Page 144: ...Illustrated Parts Parts Page 12 Rear Brakes Axle tube 8 9 4 5 6 7 3 2 1 Rear Axle ...
Page 148: ...Illustrated Parts Parts Page 16 Brake linkage ...
Page 150: ...Illustrated Parts Parts Page 18 Wheels and Tires Ref wheel hub 1 2 5 assembly 4 3 6 7 8 9 10 ...
Page 152: ...Illustrated Parts Parts Page 20 Instrument Panel dash ...
Page 154: ...Illustrated Parts Parts Page 22 Speed Control Panel ...
Page 160: ...Illustrated Parts Parts Page 28 Signet Charger Model HBS series charger shown ...
Page 162: ...Illustrated Parts Parts Page 30 Batteries ...
Page 164: ...Illustrated Parts Parts Page 32 Seat Cushions and Deck ...
Page 166: ...Illustrated Parts Parts Page 34 Decals ...
Page 168: ...Illustrated Parts Parts Page 36 Optional Equipment ...
Page 170: ...Illustrated Parts Parts Page 38 Stake Sides ...
Page 172: ...Illustrated Parts Parts Page 40 Fiberglass Cab and Doors P1 ...
Page 174: ...Illustrated Parts Parts Page 42 Mirrors Windshield Wiper Brake Light ...
Page 176: ...TAYLOR DUNN ...
Page 184: ...TAYLOR DUNN ...
Page 185: ......