Inspection - BOMBARDIER ski-doo Tundra Scandic 2004 Series Shop Manual

Section 06 ELECTRICAL
Subsection 05 (ELECTRIC STARTER)

INSPECTION

Armature
All Models
NOTE: An ohmmeter may be used for the follow-
ing testing procedures, except for the one con-
cerning the shorted windings in the armature.
Check the commutator for roughness, burnt or
scored surface. If necessary, turn the commutator
on a lathe, enough to remove grime only.
Check the commutator for mica depth. If the
depth is less than 0.20 mm (.008 in), undercut the
mica. Be sure that no burrs are left and no copper
dust remains between the segments after the un-
dercutting operation is completed.
1. Commutator undercut 0.20 mm (.008 in)
Check the commutator out-of-round condition with
V Blocks and an indicator. If the commutator out-
of-round is more than 0.40 mm (.016 in), the com-
mutator should be turned on a lathe.
Check commutator outer diameter. If less than
specified value, replace.
MODEL
All
06-05-6
WEAR LIMIT
27 mm (1.063 in)
Test for Ground Circuit in the Armature
Use growler test probes. Check between armature
core and the commutator bars. If growler lamp
turns on, bars are grounded. If so, replace armature.
1. Test probes
2. Commutator bars
Test Armature for Shorted Winding
When the armature is rotated in the growler with
a steel strip (hacksaw blade) held above it, the
strip will vibrate over that area of the armature
which has short circuit. Replace armature if so.
1. Steel strip (hack-saw blade)
2. Growler
MMR2004-133_06_05A.FM