Starter Noise Diagnosis
Diagnostic Instructions
Circuit/System Description
The PG starter motors are non-repairable. They have pole pieces
that are arranged around the armature. Both solenoid windings are
energized. The pull-in winding circuit is completed to the ground
through the starter motor. The windings work together magnetically
to pull and hold in the plunger. The plunger moves the shift lever.
This action causes the starter drive assembly to rotate on the
armature shaft spline as it engages with the flywheel ring gear on
the engine. Moving at the same time, the plunger also closes the
solenoid switch contacts in the starter solenoid. Full battery
voltage is applied directly to the starter motor and it cranks the
engine.
Reference Information
Description and Operation
Starting System Description and Operation
Circuit/System Verification
Start the engine. Listen to the starter noise, while the engine
is cranking. Compare the concern to a similar vehicle.
Circuit/System Testing
| 1. |
Remove the flywheel inspection
cover. |
| 2. |
Inspect the flywheel for the
following: |
| |
• |
Debris in the bell
housing |
| ⇒ |
If not within specifications, remove the debris,
tighten the flywheel bolts, or repair or replace the flywheel. |
| 3. |
If all inspections were within
specification, replace the starter motor. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
