BOMBARDIER ski-doo Tundra Scandic 2004 Series, Shop Manual

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Section 06 ELECTRICAL
Subsection 05 (ELECTRIC STARTER)
MMR2004-133_06_05A.FM
06-05-7
Test the Armature for Open Circuit
Use growler test probes. Place one test probe on
a commutator bar and the other test probe on the
neighboring bar. Repeat this operation for all bars,
moving one test probe at a time. If the growler
lamp does not turn on, the armature circuit be-
tween these 2 bars is opened. The armature should
be replaced or repaired; open circuits most often
occur at the commutator riser where coils are sol-
dered. (Burnt commutator bars are usually an indi-
cation of an open-circuit armature coil).
Field Windings and Brushes
Skandic WT/SWT/LT E/SUV 550
Test the Field Winding for Open Circuit
Use growler test probes. Place one test probe on
the negative brush and the other test probe on the
yoke. If growler lamp does not turn on, the field
winding has an open-circuit. The yoke has to be
repaired or replaced.
1. Test probes
Check the dynamic brake winding for open circuit
by placing one test probe on the positive brush
and the other probe on the negative brush.
If growler lamp does not turn on, the winding cir-
cuit is open-circuit and the starter housing has to
be repaired or replaced.
Brush Holder
All Models
Check the brush holder for insulation using growl-
er test probes. Place one test probe on the insu-
lated brush holder and the other test probe on the
brush holder plate. If the growler lamp turns on,
the brush holder has to be repaired or replaced.
Brush Length
All Models
Measure brush length. If less than the specified
value, replace them.
TYPICAL
1. New
2. Wear limit
End Housing
Skandic WT LC/SUV 600
Check the mica insulation of the positive brush
and also the roller bearing condition. Replace, if
required.
1. Roller bearing
2. Positive brush
A09E0AA
1
MODEL
LENGTH
NEW WEAR LIMIT
All
10 mm
(.400 in)
6 mm
( .236 in)
A03E05A
1
2
1
2
A32E22A