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.
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HOMESERVICE MANUALSCHEVROLET1998TRACKER 4D UTILITY, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALSTARTERSTARTING SYSTEMBENCH TESTINGCOMMUTATOR TEST
1998 Chevrolet Tracker 4D Utility, RWD
Commutator Test
1998 Chevrolet Tracker 4D Utility, RWDSECTION Commutator Test
- Using "V" blocks and dial indicator, check commutator runout (out-of-round). See STARTER SPECIFICATIONS table. Replace commutator/armature if runout (out-of-round) is not within specifications.
- Check commutator diameter. If commutator is less than specification, replace armature. See STARTER SPECIFICATIONS table.
- Ensure continuity exists between any 2 commutator segments. If continuity does not exist, replace armature.
- Clean commutator segment surfaces with No. 400 grit sandpaper (if necessary). If surface is scored, out-of-round, or pitted, replace commutator/armature assembly.
- Measure undercut depth of insulating mica. See STARTER SPECIFICATIONS table. If mica depth is not within specification, replace armature.
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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.