Hombre XS Space Cab 2WD V6-4.3L (1998)
Starter Motor: Symptom Related Diagnostic Procedures
NOTICE: Never operate the starter motor for more than 30 seconds at a time. Allow it to cool for at least two minutes. Overheating, caused by too
much cranking, will damage the starter motor.
The following procedure is to carrot a noise condition. Refer to Starter Motor Noise Diagnosis (Starter Assembly Noise Diag) in order to diagnose this
condition. Shims are available to adjust the starter drive pinion-to-flywheel clearance.
1. Remove the flywheel housing cover. Refer to Engine Flywheel Replacement.
2. Inspect the flywheel for the following signs of unusual wear:
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Chipped gear teeth
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Missing gear teeth
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A warned flywheel
3. Repair or replace as necessary, then retest before continuing with this procedure.
4. Start the engine.
5. Gently touch the outside diameter of the rotating flywheel ring gear with a piece of chalk. This will show the high point of tooth runout, after the
engine is stopped.
6. Turn OFF the engine.
7. Rotate the flywheel so that the marked teeth are in the area of the starter pinion gear.
8. Disconnect the battery negative cable. Refer to Battery Disconnect Caution in Service Precautions. See: Service Precautions/Vehicle Damage
Warnings
9. Measure the clearance between the top of the ring gear tooth and the bottom of the pinion tooth.
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Use the width of the wire gauge.
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Normal clearance is from 0.5 - 1.5 mm (0.01 - 0.06 inch).
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Starter shims are available in sizes 1.0 mm (0.04 inch) and 0.33 mm (0.013 inch).
10. The starter must be shimmed away from the flywheel if the following is true: .
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The pinion clearance is less than 0.5 mm (0.02 inch)
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The starter whines after the engine fires.
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Add 1.0 mm (0.4 inch) shims, one at a time.
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Loosen both starter mounting bolts enough to add the shims.
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Place the shims between the starter mounting pads and the engine block.
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Do not use more than two shims total.
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Tighten the bolts to specifications, then retest.
11. The starter must be shimmed toward the flywheel if the following is true:
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The pinion clearance is more than 1.5 mm (0.06 inch).