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 B 1-50
Page 2: ......
Page 6: ...TAYLOR DUNN ...
Page 14: ...Model B 1 00 ...
Page 30: ...TAYLOR DUNN ...
Page 36: ...TAYLOR DUNN ...
Page 52: ...TAYLOR DUNN ...
Page 66: ...Maintenance Service and Repair Steering Page 14 Exploded View of Steering Gear ...
Page 90: ...TAYLOR DUNN ...
Page 124: ...TAYLOR DUNN ...
Page 130: ...TAYLOR DUNN ...
Page 161: ...Wire Diagrams ...
Page 194: ...Illustrated Parts PARTS PAGE 10 Front Suspension 4 3 2 1 5 10 6 8 9 7 11 12 ...
Page 202: ...Illustrated Parts PARTS PAGE 18 Motor 2 3 5 6 4 7 8 1 9 10 Armature 9 ...
Page 206: ...Illustrated Parts PARTS PAGE 22 Wheels and Tires Ref wheel hub 1 2 5 assembly 4 3 6 7 8 9 ...
Page 208: ...Illustrated Parts PARTS PAGE 24 Instrument Panel dash ...
Page 217: ...Illustrated Parts PARTS PAGE 33 This page intentionaly left blank ...
Page 220: ...Illustrated Parts PARTS PAGE 36 Seat Cushions Deck and Lights B 1 50 ...
Page 222: ...Illustrated Parts PARTS PAGE 38 Seat Cushions Deck and Lights MX 1600 ...
Page 224: ...Illustrated Parts PARTS PAGE 40 Decals B 1 50 VIEW FROM INSIDE OF COWL 1 2 3 4 5 6 7 8 9 ...
Page 230: ...Illustrated Parts PARTS PAGE 46 Stake Sides B 1 50 1 2 3 4 5 6 7 8 ...