Terminal Bracket-Insulation Test; Armature Tests; Armature-Ground Test - Jeep 1987 Wrangler Workshop Manual

STARTING SYSTEM - MOTORCRACT (6-Cyl. Engine)
Terminal Bracket-Insulation Test
This test will determine if the terminal bracket is
properly insulated from the end cap. Use an
ohmmeter to test the resistance between the
bracket and cap. If the resistance is less than
infinite, the insulator is faulty. Repair by
replacing the end cap.
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Armature Tests
Armature-Ground Test
Place the armature in the growler jaws and turn
the power switch to the T E S T position.
Touch one test probe to the armature core (1),
touch the other probe to each commutator bar
(2) one at a time and observe the test lamp. The
test lamp should not light. If the test lamp lights
on any bar, the armature has a short circuit to the
ground and must be replaced.
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Test the armature winding for short circuits to
the g r o u n d , short c i r c u i t s between the
commutator bars and balance whenever the
starter motor is overhauled. Follow the test
equipment manufacturer's procedure or the
following procedure.