Section12ELECTRICALSYSTEM
Subsection 03 (STARTING SYSTEM)
F06H1JA
1
TYPICAL
1. Pull armature shaft
Remove brushes from brush holder by loosening
retaining screws.
1
F18H0QA
23
1. Brushes
2. Retaining screw
3. Brush holder
Remove springs.
CLEANING
All Engines
CAUTION: Yoke ass'y and drive unit assembly
must not be immersed in cleaning solvent.
Discard all O-rings.
Clean brushes and holders with a clean cloth
soaked in solvent. Brushes must be dried thor-
oughly with a clean cloth.
Blow brush holders clean using compressed air.
WARNING
Always wear safety glasses when using com-
pressed air.
Remove dirt, oil or grease from commutator using
acleanclothsoakedinsuitablesolvent. Drywell
using a clean, dry cloth.
Clean engine ring gear teeth and drive unit (clutch).
NOTE: Bushings or bearings must not be cleaned
with grease dissolving agents.
Immerse all metal components in cleaning solu-
tion. Dry using a clean, dry cloth.
PARTS INSPECTION
Armature
NOTE: An ohmmeter may be used for the follow-
ing testing procedures, except for the one con-
cerning shorted windings in armature.
Check commutator for roughness, burnt or scored
surface. If necessary, turn commutator on a lathe,
enough to resurface only.
Check commutator for mica depth. If depth is less
than 0.20 mm (.008 in), undercut mica. Be sure
that no burrs are left and no copper dust remains
between segments after undercutting operation is
completed.
F01H0RA
1
1. Commutator undercut 0.20 mm (.008 in)
Check commutator out of round condition with
V-shaped blocks and an indicator. If commutator
out of round is more than 0.40 mm (.016 in), com-
mutator should be turned on a lathe.
Check commutator outer diameter. If less than
27 mm (1.063 in), replace.
584 smr2004-Complete Line Up
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