Mallory Ignition Mallory unilite conversion kit 502m - Manual (Page 2)

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INSTALLATION PROCEDURE
Step 1
Disconnect the point trigger wire from the coil (–) terminal.
Step 2
Locate the #1 cylinder’s spark plug wire on the distributor cap. See a service
manual for these locations. Mark the distributor cap and the distributor
housing, in line with #1 cylinder’s spark plug wire position on the distributor
cap.
Step 3
Turn the engine crankshaft in the direction of rotation until the timing mark lines
up with the top dead center (TDC) mark on the timing tab. See a service
manual for these locations. NOTE: Removing the spark plugs may make it
easier to turn the crankshaft.
Step 4
Remove the distributor cap from the distributor and lay it aside. Do not remove
the spark plug wires or coil wire. The rotor blade should point to the mark
made on the distributor housing (from Step 2). If it is not, turn the engine
crankshaft in the direction of rotation one full turn (repeating Step 3) until the
timing mark lines up (again) with the TDC mark on the timing tab. NOTE: Once
you are finished with Step 4, DO-NOT turn the crankshaft until the UNILITE ®
Conversion Kit and distributor is installed (Step 12).
Step 5
Note the direction the rotor is pointing. Note the direction the vacuum chamber
is pointing. Remove the distributor hold down clamp and remove the
distributor from the engine.
Step 6
Remove the rotor. Disconnect the primary point wire. Remove the primary
wire and the grommet from the distributor. Remove the breaker point and the
condenser from the breaker plate. Install the ground wire to the breaker plate
using the condenser screw.
Step 7
Position the lower mounting plate (with one countersunk hole) against the
breaker plate. Align the countersunk hole over one existing breaker plate
threaded hole. Align one non-threaded hole with the other breaker plate
threaded hole. Install one 8-32 x 3/8" flathead screw through the non-
threaded hole (temporarily, do not tighten) to help in the alignment of the lower
mounting plate onto the breaker plate. Install one 8-32 x 1/4" flathead screw
through the countersunk hole and tighten firmly into the breaker plate.
Remove the 8-32 x 3/8" flathead screw.
Step 8
Position the upper mounting plate with its countersunk holes aligned with the
holes in the lower mounting plate. Install one 8-32 x 3/8" flathead screw
through the non-threaded hole in the lower mounting plate into the breaker
plate. Install one 8-32 x 1/4" flathead screw into the threaded hole in the lower
mounting plate. Make sure to tighten these screws firmly.
Step 9
Apply a thin coat of white silicone grease to the bottom of the UNILITE ® Module.
Install the UNILITE ® Module onto the upper mounting plate with two 6-32
screws. Make sure to tighten these screws firmly.
Step 10
The grommet has a flat on one flange. Install the grommet in the hole in the
distributor housing where the primary wire had previously fed through with the
flat on one flange facing out and up. Positioning the flat on one flange facing out
and up allows adequate distributor cap clearance. Slide the three wires from
the UNILITE ® Module, through the grommet, to outside the distributor housing.
Step 11
Put the UNILITE ® Module’s three wires in the female connector:
GREEN WIRE in hole #1
BROWN WIRE in hole #2
RED WIRE in hole #3
Plug the female connector into the distributor wire harness. See Figure 1.
Step 12
Install the rotor/shutter. Place the distributor in the engine with the rotor pointing
in the same general direction as during removal of the distributor (from Step 5).
NOTE: The distributor must be fully seated into the engine. It may be
necessary to turn the oil pump drive, or turn the engine crankshaft in the
direction of rotation two full turns until the timing mark lines up (again) with the
TDC mark on the timing tab to allow the distributor to seat fully.
Step 13
Rotate the distributor housing until the rotor points to the mark on the distributor
housing (from Step 2) and the nearest slot on the rotor’s shutter wheel is
approximately in the center of the optics of the UNILITE® Module. This will
generally put timing close enough for starting purposes. Put the distributor hold
down clamp in place and tighten slightly, leaving it loose enough to turn the
distributor housing.
Step 14
Install the distributor cap. NOTE: The grommet was installed during step 10.
The grommet has a flat on one flange. When installed, the flat on the flange of
the grommet must face out and up to allow adequate distributor cap clearance.
The distributor cap may not sit properly on the distributor housing unless these
details are followed exactly.
FIGURE 1