Gregory Bender

Distributor drive gear pin removal

Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models

Updated:

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Thanks to Charlie Mullendore of Antietam Classic Cycle for providing me his methodology in a private communication.

The pin that holds the distributor drive gear in place can be extremely difficult to remove. Charlie shares his methodology:

Just removed two pins very easily last week doing this same exact swap. Here's what works for me:

  1. grind the peened head off one end.
  2. tap the pin in from the other end with a hammer and punch (helps you to see the pin on the ground end for the next step).
  3. center punch the pin and drill the remaining head off (I used a 316 inch bit IIRC). You don't need to drill very deep, more a countersink.
  4. using a good quality 18 inch punch, drive the pin out.

Re-installation is very easy, tap the pin in and peen both ends. Here's a few shots of the crude fixture I made for the job out of 38 inch thick steel.

Fixture to support distributor during removal of the drive gear.
Fixture to support distributor during removal of the drive gear.

Photo courtesy of Charlie Mullendore of Antietam Classic Cycle.

Fixture to support distributor during removal of the drive gear.
Fixture to support distributor during removal of the drive gear.

Photo courtesy of Charlie Mullendore of Antietam Classic Cycle.

Fixture to support distributor during removal of the drive gear.
Fixture to support distributor during removal of the drive gear.

Photo courtesy of Charlie Mullendore of Antietam Classic Cycle.