1982 Porsche 928 Automatic TransFACTORY OEM SERVICE PROCEDURE

BOSCH Electronic Ignition System: Overhaul: Disassembly

  1. Remove distributor cap, rotor, and dust cover. Remove vacuum unit screws and lock clasp screws. Remove screws securing electrical leads, and remove leads by carefully pulling straight out.
    NOTE: Keep screws with components they attach, as screws are different lengths. Damage could result if installed in wrong location.
  2. Remove trigger wheel snap ring and then shims. Using 2 screwdrivers, carefully pry upward on trigger wheel. Remove trigger wheel and lock pin. Remove screws securing pick-up coil and stator assembly carrier plate. See Fig 1.
    Fig 1: Exploded View of Bosch Electronic Distributor
    G09323417Courtesy of NOT AVAILABLE
  3. Remove snap ring and retaining clips. Lift carrier plate and stator straight up off shaft. Remove 3 screws to separate stator winding from carrier plate.
    Fig 2: Removing or Installing Pick-Up Coil, Stator, and Carrier Plate
    G09323418Courtesy of NOT AVAILABLE
  4. Disconnect springs to centrifugal governor. Mark drive shaft relationship to distributor shaft, and then secure drive shaft in a soft-jawed vise.
  5. Carefully tap on distributor housing with a plastic mallet until circlip releases. If equipped, remove triggering contacts and attaching screws.
  6. Remove resilient ring. Mark location of flange to distributor shaft. Support distributor shaft, and using a pin punch, remove pin. Remove flange and distributor shaft. Remove lock springs for centrifugal weights and then weights.
Factory Service Tools

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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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