MSD 8468 Vacuum Advance Lockout, PN 8360, 8361, 8572 - Manual

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1. Remove the two Allen head screws that hold
the advance canister (Figure 1).
2. Remove the snap ring that holds the magnetic
pickup assembly in place. This is easy to do
with a set of snap ring pliers by straddling one
of the reluctor paddles.
3. Gently lift up on the mag pickup plate and slide
the vacuum canister out.
4. Install the Lockout Plate in place of the
canister. Install the two retaining screws but
do not tighten at this time.
5. Install the supplied self tapping screw and
washer through the Lockout and tighten. It
is important to make sure the pickup plate
is parallel with the housing of the distributor
(Figure 2). If it is cocked or slanted, the paddles
of the reluctor may contact the pickup. Check
the clearance by rotating the distributor shaft.
If necessary, use the supplied shims under the
Lockout hold-down to correctly position the
pickup plate.
Vacuum Advance Lockout
PN 8468
If you do not want to use the vacuum advance canister of the MSD Distributor, MSD has supplied
the distributor with a lockout mechanism. The Lockout bolts in the position of the vacuum canister
and will hold the pickup assembly firmly in place. The installation is easiest with the distributor out
of the engine.
RELUCTOR PADDLES
MAG PICKUP PLATE
CANISTER SCREWS
SNAP
RING
RELUCTOR
PADDLES
MAG PICKUP
PLATE
MAG PICKUP PLATE AND
HOUSING MUST BE
PARALLEL.
(SHIM IF NECESSARY)
DISTRIBUTOR HOUSING
LOCKOUT PLATE
IF NECESSARY,
SHIM HERE
LOCKOUT
SCREW/WASHER
Figure 1 Removing the Vacuum Canister.
Figure 2 Checking Installation of the Lockout Plate.
Note: If no shims were required, use one beneath the washer of the Lock-Out Hold Down Screw.