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 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...
Page 106: ...TAYLOR DUNN...
Page 116: ...TAYLOR DUNN...
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...
Page 226: ...Illustrated Parts Parts Page 56...
Page 228: ...Illustrated Parts Parts Page 58...
Page 230: ...Illustrated Parts Parts Page 60...
Page 232: ...Illustrated Parts Parts Page 62...
Page 234: ...Illustrated Parts Parts Page 64...
Page 238: ...Illustrated Parts Parts Page 68...
Page 244: ...Illustrated Parts Parts Page 74...
Page 246: ...TAYLOR DUNN...