Once you have removed all the electronics from the distributor you will need
to drill out the pin that holds on the gear.
Once the gear is off you can remove the two retaining screws to release the
bearing. The oil seal in the centre is the cause of all the 4A-G
distributor oil leaks
One dirty distributor in bits.
Now we have cleaned everything, we can start with the rebuild, first install
a new oil seal.
Reinstall the shaft securing it with the two screws.
Next install the pickups, careful you get the air-gaps correct between the
pickup and the shaft.
Reinstall the cover and a new rotor arm.
Put on new main o-ring seal and between the new cap. Not forgetting to
attach the drive gear with the pin supplied in the rebuild kit.