PN8594 Datasheet, PDF (7/8 Pages) Mallory performance club – MSD Pro-Billet Distributor

INSTALLATION INSTRUCTIONS
7
Note: MSD 6 and 7 Series Ignitions
share the same color wiring.
     Figure 12 Wiring with an MSD 7-Series Ignition and Timing Control.
REPLACING THE DISTRIBUTOR GEAR
To replace the distributor gear on the MSD PN 8594 Distributor, the following steps must be followed.
1. Remove the original spiral pin with a punch and press the original gear off the shaft. Press the new
gear onto the shaft and line up the holes for the spiral pin. Note: The holes may not line up.
2. If the holes line up, measure the distance as shown in the diagram. If the measurement is not
correct or the holes do not line up, a new hole must be drilled. If the measurement is within speci-
fications and the holes line up, install a new spiral pin.
3. To drill a new hole, turn the gear on the shaft so the gear hole is approximately 90° to the original
shaft hole. Carefully position the gear on the shaft to match the specifications given in the draw-
ing. Note: Before measuring, push the shaft in to remove all of the end play.
4. When the gear is in the correct position, drill a 0.125” hole through the distributor shaft. Install a
new spiral pin and recheck the measurement.
Note: If the measurement is not within specifications after drilling, a slight correction can be made by
machining the upper face of the thrust collar. Do not remove more than 0.010” or rotor-to-cap
interference may result.
THRUST COLLAR
IRON GEAR
PN 85812
BRONZE GEAR
PN 8581
3.045 TO 3.050
     Figure 13 Replacing the Distributor Gear.
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