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FAULTS
Starter motor is
absorbing
current but
does
not
rotate
or rota
tes
very
slowly.
Starter
motor rotates but
fai ls
to
start engine.
100
POSSIBLE CAUSES
Rotor rubbing
against
polar shoes or
jammed
between
same.
Rotor
shaft
is
seized.
Rotor
shaft
is too tightly housed
in
bush-
ings.
Short-circuited
or
grounded field
wind-
ing.
Discharged
battery,
or
deteriorated
in
one
or
more
cells.
Break
or grounding In rotor.
Short-circuited rotor.
REMEDIES
jf bushings are
too worn
oul.
replace
them.
Check bearings
alignment. Check
rotor shaft. Check that
polar
shoes
are
properly housed and
secured to
casing.
Replace
bushings and
recondition rotor
shaft.
Clean
rotor
shall and
bushings and
lu-
bricate. If not
enough,
replace
bushings.
Strip
field coils and replace
them,
or.
if
possible. repair them.
Charge or repair
battery.
Replace
rotor.
Remove
copper and
carbon
dust from
commutator and
brush holders. Check
rotor and if necessary
replace
-it.
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