Sachs SA 340 - Starter Faults and Troubleshooting

Starter faults
When fau lts arise it should be borne in mind that their cause need not necessarily lie
with
the starter itself, nor in the poor electrica l connection of the vehicle earthi ng
points, but also in the fuel supply. Th e following remed ial hints are limi ted to the
actual starter system.
A. When the ignition is switched on,
the
armature shaft does not rotate,
or only slowly:
1. Battery exhausted.
2. Battery defe ctive.
3.
Battery terminals loose, oxidized,
earth connection poor .
4.
Start er brushes or terminals have
g round contact.
5. Carbon brushes of the starter do not
lie on the commutator, are jammed
in their guides, are worn, broken,
oi l- smeared or soiled.
6. Starter switch da · maged (parts l oose,
so tha t switch is not on, burnt ou t).
7.
Ma gnetic switch of starter damaged
(only with so l enoid-controlled star-
ter).
8. L
oss of current in leads too great,
l eads damaged, l ead connections
loose.
B. Armature rotates, but pinion does
not
engage:
1. Pinion soiled.
2. Burr on pinion or gear rim.
C. When the ignition is switched on,
the starter
armature ro tate s until the
pinion connects, then stops:
1. Battery insufficiently charged.
2. P ressure of ca rbon brushes insuffi-
cient.
3.
Magnetic switch of starter (only with
sole noid -cont rol l ed starter ) not in
order.
4. Loss of curr e nt in leads too great .
D. Starter keeps running after switch is
released:
1. S tarter switch does not switch off or
magnetic switch (only with solenoid-
con trolled starter) sticks.
E. Pin ion does not disengage afte r
engine starts:
1. Pinion or flywheel toothing badly
soiled or damaged; return spring
weak or broken.
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