Robert Bosch Starting Motor Repair
Carefully pull armature with drive end frame assembly
from field frame (do not damage windings).
Remove engaging lever and armature jointly out of drive
end frame assembly.
Drive back stop ring (A) and bend open snap ring (B).
Remove drive with pinion and center bearing from
Wash parts in solvent and dry with compressed air.
NOTE: Armature, windings and drive with pinion must not
be placed in cleaning fluid.
Inspect all parts for wear and mechanical damage.
TESTING ARMATURE FOR GROUNDS
Place one test lead on the armature core or shaft. Place
other lead on commutator.
If the test meter indicator swings toward zero, the
armature is grounded. Replace armature.