STARTER ASSEMBLY TEST/REPLACE (CONT).
Interpret test results as follows:
Rated current draw and no-load speed indicates normal condition of cranking motor.
Low free speed and high current draw indicates:
(1) Too much friction; tight, dirty, worn bearings; bent armature shaft; or loose pole shoes allowing armature to
(2) Shorted armature.
(3) Grounded armature or fields.
Failure to operate with high current draw indicates:
(1) Direct ground in the terminal or fields.
(2) Seized bearings.
Failure to operate with no current draw indicates:
(1) Open field circuit.
(2) Open armature coils.
(3) Broken brush springs, worn brushes, high insulation between commutator bars, or other causes which
would prevent good contact between brushes and commutator.
Low no-load speed and low current draw indicate high internal resistance due to poor connections, defective
leads, and dirty commutator.
High free speed and high current draw indicate shorted field.
If any of the above conditions exist, notify direct support maintenance.