ELECTRICAL
ELECTRIC
STARTER SYSTEM
Measure commutator outside diameter.
• Standard: 1.14
in.
(29.0 mm)
• Service limit: 1.10
in.
(28.0 mm)
If measurement exceeds service limit, replace
armature.
004755
Check that mica (insulator) between the segments
is undercut to specified depth.
• Standard: 0.02 to 0.03
in.
(0.5 to 0.8 mm)
• Service limit:
0.01
in.
(0.2 mm)
If measurement exceeds service limit, cut to spec-
ified depth.
IMPORTANT: Remove all particles
of
mica and
metal with compressed
air.
1. Mica
004756
2. Segment
3. Undercut
&
WARNING
&
Wear
safety
glasses when
disassembling
and
assembling
stopper
ring.
84
Check for continuity between the commutator and
the armature core/shaft.
Replace armature
if
con-
tinuity is indicated.
1.
Commutator 004757
2.
Armature core
3. Armature shaft
Check for continuity between adjacent commuta-
tor segments.
Replace armature
if
no continuity is
indicated.
004758
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