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).
,4528
inch
(11.5
mm)
WEAR
/
LIMIT
ES-1193
Overrunning Clutch:
Inspect 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.
-1
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
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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