Commutator Inspection:
If
commutator is dirty or dis-
colored, clean with number
00
to
000
commutator
paper. Blow grit
out
of armature after cleaning.
If commutator is scored, rough, or worn, turn it down
in
a
lathe.
Field Coil: Use an ohmmeter
to
check for continuity
between brushes.
If
there is no continuity, the field coil is
open and must be replaced. With field coil mounted
in
the frame, check for continuity between the field coil and
frame. Replace frame assembly if there is continuity.
Brushes: Clean around brushes and holders, wiping
off
all brush dust and
dirt.
If
brushes are worn shorter than
.4528
inch
(1
1.5
mm) replace them (Figure
7).
Overrunning Clutch: lnspect pinion and spline teeth for
wear
or
damage.
If
pinion gear is worn or damaged, inspect flywheel ring
gear also. Rotate pinion.
It
should turn free when turned
in one direction, and lock when turned in the opposite
direction.
Cleaning
overrunning
clutch
in
liquid
cleaning solution
will
result
in
starter
damage.
Do
not clean overrunning clutch
in
liquid
cleaning solutions.
Solenoid: Push solenoid plunger
in
and release it. The
plunger should return to its original position. While
holding plunger all the way
in,
check for continuity
between terminals
“M”
and “B”.
If
there is no continuity,
replace the solenoid (Figure
8).
After replacing solenoid
check pinion clearance.
TERMINAL
“B”
LIMIT
WEAR
ES-1193
ES-1345
FIGURE
7.
BRUSH
WEAR
LIMIT FIGURE
8.
SOLENOID TERMINALS
Check for shorts between positive side of brush holder
and brush holder base.
If
there is continuity, replace
holder assembly. Check for free movement of brushes.
All
brushes should move freely
in
the brush holders.
Bushings:
If
either the front or rear bushing
show
signs
of wear or damage, replace them. Bushing and rear
bracket are replaced as an assembly. Check armature
shaft thrust gap
if
rear bracket is replaced.
Remove front bushing by tapping bushing from inside
with a
7/16
inch tap.
Do
not remove cap from front
bracket. Thread capscrew, same size as tap, into
bushing. Using a slide hammer remove bushing from
front bracket. Press new bushing into front bracket. Use
care not
to
distort inside diameter of bushing.
9-4
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