05-8 Startina Svstem
05-8
OVERHAUL
Disassembly
1.
Clamp starter motor in vise fitted with protective soft
jaws. Remove nut and washer retaining field winding
cable to solenoid and remove cable from stud.
2.
Remove solenoid by removing three screws.
3.
Remove two screws retaining commutator end
housing cap, remove cap and rubber seal.
’ ‘I
.
/
A RETAINING SCREW
B HOUSING CAP
C SCREWDRIVER
D SHIMS
E “C” CLIP
F ARMATURE SHAFT
4.
Wipe grease from armature shaft, and remove “C” clip
and shims from armature end.
5.
Remove through bolts or two nuts and washers and
lift off commutator end housing.
6.
Remove brushes from brush holder assembly by
carefully lifting brush retaining/tensioning springs
clear and sliding brushes from their holder. Remove
brush holder assembly.
7.
Separate drive end housing and armature assembly
from frame by tapping apart.
8.
Remove rubber insert from drive end housing.
Remove actuating arm pivot retaining nut and slide
pivot pin from housing.
9.
Withdraw armature assembly, complete with actuating
arm, from drive end housing. Unhook actuating arm
from drive pinion flange.
10. To remove drive pinion assembly from armature shaft
use a suitably dimensioned tube to separate thrust
collar from over “C” clip. Remove “C” clip from its
groove and slide thrust collar and drive pinion
assembly off armature shaft.
1.
Cleaning and Inspection
Do not wash the drive because the solvent will
wash out the lubricant, causing the drive to slip.
Use a brush or compressed air to clean the drive,
2.
3.
4.
field coils, armature, commutator, armature shaft front
end plate, and rear end housing. Wash all other parts
in solvent and dry the parts.
Inspect the armature windings for broken or burned
insulation and unsoldered connections.
Check the armature for open circuits and grounds.
Inspect the armature shaft and the two bearings for
scoring and excessive wear. If the commutator is
rough, turn it.
5.
Check the brush holders for broken springs and the
insulated holder for shorts to ground. Replace the
brushes if worn.
6.
7.
8.
9.
Check the brush spring tension.
Inspect the field coils for burned or broken insulation
and continuity. Check the field brush connections and
lead insulation. A brush kit is available. All other
assemblies are to be replaced rather than repaired.
Examine the wear pattern on the starter drive teeth.
The pinion teeth must penetrate to a depth greater
than 112 the ring gear tooth depth (to eliminate
premature ring gear and starter drive failure.
Replace starter drives and ring gears that have
milled, pitted or broken teeth or that show evidence of
inadequate engagement.
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