1979 Triumph SpitfireFACTORY OEM SERVICE PROCEDURE

LUCAS Alternators: Overhaul: Disassembly

  1. Remove end cover and note wire positions and color. Remove screws attaching surge protection diode and brush assembly. Lift out brush assembly and surge protection diode. Regulator may be removed if desired.
  2. Unsolder stator wire connections and remove rectifier pack grounding strip. Withdraw rectifier pack. Remove through bolts.
    CAUTION: When necessary to solder or unsolder leads from diodes, use pliers as a heat sink by pinching diode pin with jaws of pliers. Solder connections quickly to prevent heat damage to diodes.
  3. Remove through bolts from alternator frame and carefully slip end bracket and stator off of rotor. (It may be necessary to tap lightly on an extractor or tube placed against outer bearing journal to separate rotor from end bracket.)
  4. Complete disassembly, if required, by removing pulley and drive key. Press rotor from drive end bracket and remove screws retaining end bearing in position. Replace as necessary.
    NOTE: Position of all washers, spacers and insulators must be noted for proper assembly.
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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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