Maintenance, Service, and Repair
Motor Service
Page 3
2. Measure the diameter of the commutator.
• If the commutator is less than the minimum
diameter specified in section
Service Limits
,
then the motor must be replaced.
3. Measure the commutator undercut depth in
5-places around the commutator.
• If any one of the measurements is less than the
minimum undercut depth specified in
Service
Limits
at the end of this section, then the
commutator must be undercut. Refer to
Repair
Commutator
section for information regarding
undercutting the commutator.
4. Inspect the commutator for groves.
• If the commutator is grooved then it must
be machined on a lathe. Do not machine
the commutator past the minimum diameter
specified in
Service Limits
section. Refer to
Repair Commutator
section for information
regarding machining the commutator.
5. Inspect the commutator for burn marks.
• Burn marks and/or raised commutator segments
90 or 180 degrees apart is evidence of a shorted
armature. A tool called a growler is required to
reliably test for a shorted armature.
6. Inspect the commutator for raised segments.
Raised segments could be a result of a stalled
motor or shorted armature. A tool called a growler
is required to reliably test for a shorted armature.
• If the armature is not shorted then the raised
segments can be removed by machining the
commutator. Do not machine the commutator
past the minimum diameter specified in
Service
Limits
section. Refer to
Repair Commutator
section for information regarding machining the
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.
Typical burn mark on a shorted armature
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Страница 14: ...INTRODUCTION Page 8 Notes ...
Страница 40: ...SAFETY RULES AND OPERATING INSTRUCTIONS Safety Rules Page 22 Notes ...
Страница 46: ...Maintenance Service and Repair Front Axle Page 6 Notes ...
Страница 65: ...TABLE OF CONTENTS Throttle Linkage Throttle Linkage Adjustments 2 Throttle Linkage ...
Страница 81: ...Maintenance Service and Repair Page 9 Transmission view from rear ...
Страница 93: ...Maintenance Service and Repair Page 21 NOTE Values shown are for reference only C D ...
Страница 94: ...Maintenance Service and Repair Page 22 Notes ...
Страница 100: ...Maintenance Service and Repair Page 6 Notes ...
Страница 118: ...Wire Diagrams Wire Diagrams Page 2 Notes ...
Страница 120: ...Illustrated Parts Page 2 Front Axle and Fork ...
Страница 122: ...Illustrated Parts Page 4 Steering Linkage ...
Страница 126: ...Illustrated Parts Page 8 Transmission Differential Case ...
Страница 128: ...Illustrated Parts Page 10 Rear Axle ...
Страница 130: ...Illustrated Parts Page 12 Rear Brakes ...
Страница 132: ...Illustrated Parts Page 14 Motor ...
Страница 134: ...Illustrated Parts Page 16 Brake Linkage ...
Страница 136: ...Illustrated Parts Page 18 Throttle Linkage Slip joint detail ...
Страница 138: ...Illustrated Parts Page 20 Wheels and Tires page 1 ...
Страница 140: ...Illustrated Parts Page 22 Wheels and Tires page 2 ...
Страница 144: ...Illustrated Parts Page 26 Speed Control Panel ...
Страница 148: ...Illustrated Parts Page 30 Charger Lestronic Page 1 ...
Страница 150: ...Illustrated Parts Page 32 Charger Lestronic Page 2 ...
Страница 156: ...Illustrated Parts Page 38 Frame Seat Cushions and Deck Trailer Hitches ...
Страница 158: ...Illustrated Parts Page 40 Decals ...
Страница 160: ...Illustrated Parts Page 42 Knee Pad and Floor Mats optional ...
Страница 162: ...Illustrated Parts Page 44 Lift Out Battery Box optional Illustration not available ...
Страница 164: ...Illustrated Parts Page 46 Ladders and Strobe Light optional Strobe Light ...
Страница 166: ...Illustrated Parts Page 48 Notes ...
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