Centrifugal Advance
Distributor With Hall Sensor:
NOTE: This procedure requires that the distributor is removed from the engine block. For distributor removal and installation procedure, refer to DISTRIBUTOR.
The centrifugal advance mechanism can be accessed for cleaning purposes only. If repairs are needed, replace complete distributor.
1. Remove the vacuum advance unit screws.
2. Tilt the advance unit upwards to disconnect the rod from the Hall sender plate. It may be necessary to turn the Hall sender plate into the "full advance" position to disconnect the diaphragm rod.
3. With a snap-ring plier, remove the trigger wheel snap ring.
Trigger Wheel Removal:
4. Use two screwdrivers positioned at opposite sides of the trigger wheel as shown. Insert the screwdriver as far as possible to avoid any damage to trigger wheel.
5. Pry trigger wheel up and remove it from the shaft.
NOTE: Make sure you don't loose the small trigger wheel locating pin.
6. Remove following washer and snap-ring.
7. Remove remaining base plate retaining screws.
8. Remove Hall sender unit.
9. Now you can access, remove or clean the centrifugal advance mechanism.
10. Reassemble in reversed order.
NOTE: Volkswagen recommends to always use new washers and snap-rings during the reassembly process.