Motor Service
Motor
Page 5
Check each segment
all of the way around
the commutator
Hold this lead
in place
Commutator
7. Visually inspect the armature windings for burnt insulation. Burnt insulation is a direct result of
motor overheating and could lead to a shorted armature.
• If the insulation is cracked or burnt, then it is recommend that the armature or motor be
replaced.
NOTE: If the armature has been burnt then there is a good possibility that
the field windings may also be burnt. Symptoms indicating a shorted
field include high motor current, lack of power and possibly
excessive speed.
8. Using a growler, test the armature for shorts.
• If the armature is shorted, then we recommend that the armature or motor be replaced.
9. 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.
10. 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.
11. Measure the armature and field resistance (refer to
Service Limits
table at end of this section).
If the armature of field resistance is not within specification then the motor must be repaired or
replaced.
Summary of Contents for B0-248-36
Page 2: ......
Page 6: ...TAYLOR DUNN...
Page 76: ...Maintenance Service and Repair Steering Page 22 Exploded View of Steering Gear...
Page 102: ...TAYLOR DUNN...
Page 138: ...TAYLOR DUNN...
Page 144: ...TAYLOR DUNN...
Page 156: ...TAYLOR DUNN...
Page 159: ...Sevcon Troubleshooting Page 3 Electrical Troubleshooting Identifying Your Controller...
Page 178: ...TAYLOR DUNN...
Page 210: ...Illustrated Parts Parts Page 2 Part number not available at time of printing Front Axle...
Page 212: ...Illustrated Parts Parts Page 4 Part number not available at time of printing Steering Knuckle...
Page 214: ...Illustrated Parts Parts Page 6 Part number not available at time of printing Front Brakes...
Page 216: ...Illustrated Parts Parts Page 8 Part number not available at time of printing Steering Linkage...
Page 228: ...Illustrated Parts Parts Page 20 Part number not available at time of printing Rear Brakes...
Page 230: ...Illustrated Parts Parts Page 22 Part number not available at time of printing Brake linkage...
Page 234: ...Illustrated Parts Parts Page 26 Part number not available at time of printing Motor...
Page 278: ...Illustrated Parts Parts Page 70 Part number not available at time of printing Hitches...
Page 279: ...Illustrated Parts Parts Page 71 Part number not available at time of printing...
Page 280: ...Illustrated Parts Parts Page 72 Part number not available at time of printing...
Page 281: ...APPENDIX A Special Tools...
Page 290: ...Model B 1 00...
Page 291: ......