Testing And Repairing: Rotor

1982 Volkswagen Rabbit SSECTION Rotor
  1. Test claw pole rotor for short circuits to ground using 40V AC tester. Measure resistance of exciter (field coil) in rotor with ohmmeter across slip rings. Resistance should be 4.0-4.4 ohms.
  2. If necessary, turn slip rings in a lathe, noting maximum runout of 0.001" (0.03 mm) and minimum diameter of 1.25" (31.5 mm). Maximum pole wheel runout should not exceed 0.002" (0.05 mm).
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.