Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1992 Buick Roadmaster BaseFACTORY OEM SERVICE PROCEDURE
Armature Test
- Test armature for shorted coils with growler. Check for grounded coils with test light. Place one lead on armature shaft and other lead on commutator. Test light should not illuminate. If test light illuminates, armature is grounded and must be replaced.
- Turn commutator in lathe if it is rough, worn or has protruding insulation. DO NOT turn to less than 1.65" (41.9 mm) diameter. Sand commutator lightly with 400 grit emery cloth, and clean slots.
CAUTION:
Some starters have a molded-type commutator. DO NOT
undercut insulation as it may cause serious damage to commutator.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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