PN8558 Datasheet, PDF (1/4 Pages) Mallory performance club – MSD Billet Crank Trigger Distributors

MSD Billet Crank Trigger Distributors
PN 84697, PN 8558 and PN 84698 (GM DRCE Block)
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Note: Read these instructions completely before attempting the installation.
Parts Included:
1 - MSD Distributor Assembly
2 - O-Rings
1 - Tube of Gear Lubricant
1 - Gasket
1 - Rotor Phasing Tech Brief
Replacement Parts:
Rotor and Base, PN 8457
Cap, PN 8408
GM DRCE Bronze Gear, PN 84711
Chevrolet Bronze Gear:
Standard (0.500" ID), PN 8471
Oversized (+0.006"), PN 8472
WARNING: During installation, disconnect the battery cables. When disconnecting the  cables,
always remove the Negative cable first and install it last.
Note: A Crank Trigger must be used with this distributor.
    An MSD Billet Hold-Down Clamp, PN 8110, is recommended.
REMOVING THE DISTRIBUTOR
1. Remove the existing distributor cap without disconnecting any
of the spark plug wires.
2. With the cap off, rotate the engine or until the rotor is aimed at a
fixed point on the engine or firewall. Note this position by making
a mark (Figure 1).
3. Place the distributor cap back on and note which plug wire the
rotor is pointing to. MARK THE SPARK PLUG WIRES and remove
the distributor cap.
4. Loosen the distributor hold-down clamp and slide the clamp
out of the way.
5. Lift the distributor out of the engine. Note that the rotor rotates
as you lift the distributor out. This is due to the helical cut gear
and should be taken into consideration when installing a new
distributor.
Figure 1 Marking the Rotor Location.
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