Service manual

STARTING SYSTEM

SERVICE MANUAL NUMBER 26

90-861329--1 MARCH 1999 Page 4A-37

Cleaning and Inspection

IMPORTANT: Do not use grease dissolving solvents to clean electrical components,

planetary gears, or drive. Solvent will damage insulation and wash the lubricant out

of the drive and gears. Use clean rags and compressed air to clean components.

1. Test over-running clutch action of drive. Pinion should turn freely in over-running direc-

tion and must not slip in cranking direction. Check pinion teeth. Check spring for tension

and drive collar for wear. Replace if necessary.

2. Check that brush holders are not damaged or bent and hold brushes against commuta-

tor. Check brushes for wear.

3. Inspect armature commutator. If badly grooved or out-of-round, turn down and undercut

commutator.

4. Inspect all roller bearing surfaces for wear. Check that bearings roll freely. If any rough-

ness is felt, replace bearing.

5. Inspect planetary gear assembly. Gears must mesh easily and roll freely with no binding.

Armature Tests

TEST FOR SHORTS

Check armature for shorts by placing on growler and holding hack saw blade over armature

core while rotating armature. If saw blade vibrates, armature is shorted. After cleaning

between commutator bars, recheck. If saw blade still vibrates, replace armature.

01440

a-Hacksaw Blade

b-Armature Core

c-Growler

INDEX