TM-9-2920-242-35
STARTER, ENGINE ELECTRICAL, ASSEMBLY MODEL 1113943, 1113904 AND 1113944
TECHNICAL MANUAL; DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE INCLUDING REPAIR PARTS
SEPTEMBER 1964
TM-9-2920-242-35 - Page 17 of 110
Table I. Troubleshooting - Continued
Malfunction
2.
Low speed and low
current.
3.
Low speed and high
current.
4.
Starter produces ex-
cessive noise when
operated.
5.
Starter drive clutch
fails to shift.
8
Probable causes
a.
High internal resistance.
—
b.
Poor brush contact.
—
a.
Faulty armature.
—
b.
Armature drag.
—
a.
Lack of lubrication.
b.
Defective bearings.
—
c.
Loose pole shoes.
d.
Loose housing.
a.
Defective solenoid relay.
Corrective action
a.
b.
a.
b.
a.
b.
c.
d.
a.
Remove commutator end
plate (par. 18c) and
tighten brush leads.
Remove commutator end
plate (par. 18c) and in-
spect brushes and com-
mutator. Install new
brush kit (par. 35c) and
re-seat new brushes or
resurface commutator
(par. 27d).
Remove commutator end
plate (par. 18c) and in-
spect commutator for
evidence of excessive
arcing. If indicated, re-
move armature and
check for grounds (fig.
20) or shorts (fig. 21).
Replace armature, if
defective (par. 35c).
Disassemble starter
(par. 18) and inspect
bearings and armature
(par. 26). Repair as
required.
Lubricate bearings
(par. 29).
Disassemble starter
(par. 18) and replace
defective bearings.
Tighten pole shoe
screws as shown in
figure 18.
Tighten all housing at-
taching screws.
Check operation of sole-
noid by placing a jumper
across battery terminal
and solenoid switch ter-
minal. If solenoid does
not operate, replace
solenoid relay (pars.
18e and 35a).
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