Curtis PMC Troubleshooting
Page 15
Solenoids
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.
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.
If the vehicle runs in forward only then skip ahead to the test sequence:
Forward (does not run in reverse
).
If the vehicle runs in reverse only then skip ahead to the test sequence:
Reverse (does not run in forward)
.
FLUKE 79
SERIES II MULTIMETER
V
V
OFF
Hz
mV
A
Solenoids are shown for reference only.
The type of solenoid in your truck may
look different
ISO
_
+
The voltage shown is for illustration
only. The actual voltage may vary.
Battery Negative
FWD/REV
Connect a voltmeter across the ISO solenoid COLD terminal
and battery negative.
Close all interlock switches and turn the Key Switch
ON.
Depress the accelerator pedal fully.
•
If the voltage is at battery volts then the wire
from the ISO solenoid to the PMC is bad. 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.
Connect a voltmeter across the ISO solenoid HOT terminal
and battery negative.
Close all interlock switches and turn the Key Switch
ON.
Depress the accelerator pedal fully.
•
If the voltage is at battery volts then the ISO solenoid
has failed. 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.
•
If the voltage is not at battery volts then check the
wiring to battery positive and the main circuit breaker.
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.
FLUKE 79
SERIES II MULTIMETER
V
V
OFF
Hz
mV
A
Solenoids are shown for reference only.
The type of solenoid in your truck may
look different
ISO
_
+
The voltage shown is for illustration
only. The actual voltage may vary.
Battery Negative
FWD/REV
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...