Hall Effect Sensor: Service and Repair

Distributor With Hall Sensor:

NOTE: This procedure requires that the distributor is removed from the cylinder head.

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 move 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. Install a suitable 2-jaw puller or use two screwdrivers positioned at opposite sides of the trigger wheel as shown. Insert screwdrivers as far as possible to avoid any damage to trigger wheel.
5. Pull/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. Reassemble in reverse order.