Motor SEM
Page 68
C0-425-48
MC-425-13
Inspect the armature windings where they loop back at
the opposite end of the commutator.
•
If the windings show indications of expanding (see
illustration), then the motor has been operated at
excessive RPM and the armature or motor must
be replaced.
•
If the armature windings expanded enough to
contact the field, then it is likely that the motor
controller has bee damaged.
Using a growler, test the armature for shorts.
•
If the armature is shorted, then it is recommend
that the armature or motor be replaced.
Using the continuity function of digital multi meter, check
the continuity around the entire commutator by placing
one test lead against one of the commutator segments
and the other test lead against all of the other segments
one at a time. There should be continuity around the
entire commutator.
•
If any segment indicates an open circuit, then the
motor must be replaced.
Using the continuity function of digital multi meter, check
the continuity from any one of the commutator segments
and the armature frame.
•
If it is not an open circuit, then the armature is
shorted and the motor must be replaced.
Measure the armature resistance (refer to Service Limits
table at end of this section).
• If not within specification then the motor must be
repaired or replaced.
Field Windings
Measure the field resistance (refer to Service Limits table
at end of this section).
• If not within specification then the motor must be
repaired or replaced.
Summary of Contents for C0-425-48
Page 6: ......
Page 12: ...Page 12 MC 425 13 Introduction C0 425 48 Notes...
Page 20: ...PM Schedule Page 20 C0 425 48 MC 425 13 Notes...
Page 21: ...Table of Contents Special Tool List Special Tool List Tool List 22 Troubleshooting Guide 24...
Page 28: ...Lubrication Page 28 C0 425 48 MC 425 13 Notes...
Page 44: ...Steering Page 44 C0 425 48 MC 425 13 Exploded View of Steering Gear...
Page 46: ...Steering Page 46 C0 425 48 MC 425 13 Notes...
Page 76: ...Tires Wheels Page 76 C0 425 48 MC 425 13 Notes...
Page 86: ...Wire Diagram Page 86 C0 425 48 C0 425 48 Notes...
Page 96: ...Replacement Parts Page 96 MC 425 13 C0 425 48 AXLE ASSEMBLY FRONT AXLE SHAFT ASSEMBLY REAR...
Page 98: ...Replacement Parts Page 98 MC 425 13 C0 425 48 TRANSAXLE ASSEMBLY REAR...
Page 100: ...Replacement Parts Page 100 MC 425 13 C0 425 48 BRAKES BRAKE LINES...
Page 104: ...Replacement Parts Page 104 MC 425 13 C0 425 48 BRAKE PEDAL ASSEMBLY...
Page 106: ...Replacement Parts Page 106 MC 425 13 C0 425 48 CONTROL SYSTEM MOTOR SPEED CONTROL...
Page 118: ...Replacement Parts Page 118 MC 425 13 C0 425 48 STEERING LINKAGE...
Page 120: ...Replacement Parts Page 120 MC 425 13 C0 425 48 SUSPENSION FRONT STEERING COLUMN...
Page 122: ...Replacement Parts Page 122 MC 425 13 C0 425 48 SUSPENSION REAR...
Page 126: ...Replacement Parts Page 126 MC 425 13 C0 425 48 Notes...
Page 127: ......