B&M 80680 LIGHT TRUCK MEGASHIFTER - Manual (Page 7)

7
engine or exhaust parts.
Remove the two rubber boots, one
large nut, and a large lockwasher from
the threaded end of the shifter cable.
Slide the end of the cable into the cable
bracket. Install the large nut and the
lockwasher loosely over the end of the
cable. Install the two rubber boots onto
the end of the cable. Install the swivel on
the threaded end of the cable and posi-
tion it in the center of the threaded portion.
STEP 24.Move the transmission selec-
tor lever by hand to full forward position
(Low). Place the shifter lever to the Low
gear position (ratcheted all the way back).
Adjust the large nuts on the cable so that
the swivel will slide into the hole on the
selector lever. Tighten the large nuts com-
pletely. Be sure that the swivel will slide
freely in and out of the hole in the selector
lever.
With the swivel in the selector lever,
move the shifter to the Park position, as
far forward as the shifter will go without
forcing it. (The shifter has further travel
that is used to reach the GM Park position
but is not used on Chrysler transmis-
sions. Trying to force the shifter will dam-
age the cable.) The shift lever on the
transmission should be all the way back.
Check to see that the swivel will slide
freely in and out of the hole in the lever in
this position. If it does not slip in freely,
adjust the swivel slightly until it will slip
into the hole in the lever in both the Low
and the Park positions. Operate the
shifter through all the gear positions.
Check to make sure the swivel will slide
in and out of the selector lever hole in
each gear position. Install the cotter key
supplied with the shifter into the swivel
and spread the key ends.
If you have a problem, DO NOT FORCE
THE SHIFTER, this will damage the cable,
the shifter or the transmission. Simply
start at the beginning and carefully check
all your steps.
IMPORTANT: Do not force the shifter to
over travel into the Park position. This will
move the shifter into the GM Park position
and will damage the cable or the trans-
mission.
STEP 25. Check the operation of the
throttle linkage again. The linkage must
operate smoothly with no bind. All trans-
missions using automatic valve bodies
must have the throttle linkage connected
and operating or transmission damage
will result.
STEP 26. Neutral Safety/backup light
switch.
’66-’68: The neutral safety switch will
continue to function normally. It will not be
necessary to hook up the neutral safety
switch wires on the shifter. Disconnect
the battery ground cable before wiring the
backup light switch. Locate the original
backup light switch on the steering col-
umn or the console shifter. Run these
wires to the top switch on the B&M
Megashifter (See Figure 1). Reconnect
the ground wire and check the light for
proper operation. Adjust the switches on
the shifter if required.
’69 and Later: The neutral safety/backup
switch is located on the transmission
and will continue to function normally. It
will not be necessary to connect any wires
to the switches on the shifter.
STEP 27. Check the operation of the
throttle linkage again. Linkage must op-
erate smoothly with no bind. All transmis-
sions using automatic valve bodies must
have the throttle linkage connected and
operating or transmission damage will
result.
STEP 28. Neutral safety/backup light
switch
’66-’68: The neutral safety switch will
continue to function normally. It will not be
necessary to hook up the neutral safety
switch wires on the shifter. Disconnect
the battery ground cable before wiring the
backup light switch. Locate the original
backup light switch on the steering col-
umn or the console shifter. Run these
wires to the top switch on the B&M Light
Truck Megashifter (See Figure 1). Re-
connect the ground wire and check the
light for proper operation. Adjust the
switches on the shifter if required.
’69 and Later: The neutral safety/backup
switch is located on the transmission ers, scribe a line around the tower that
follows the contour of the floorboard.
Remove the tower and trim at the scribe
line using tin snips. Once the tower is
properly trimmed, install it using two flat
head sheet metal screws. The indicator
cable should be routed out the top of the
tower on the right side while the tower is
being installed.
STEP 31. Install the indicator light bulb in
its socket on the shifter cover plate. Run
a length of wire from the vehicle’s instru-
ment light circuit to one of the wires.
Connect the other wire to a good chassis
ground. A shifter mounting bolt should be
satisfactory.
STEP 32. Snap the shift position window
into the cover plate. The window snaps in
from the top with tabs inserting into the
slots at either end of the window opening.
Place the shifter in the Park position then
remove the T-Handle from the shifter.
Place the cover plate over the stick and
onto the top of the tower. Route the indi-
cator cable as shown in Figure 10. (If the
cable is not routed this way, the indicator
may bind. Run the shifter through all of
the gears to check the operation of the
indicator. If the indicator needs adjust-
ment, loosen the screws holding the in-
dicator cable clamp to the cover plate and
slide the cable bracket to adjust the indi-
cator position. (Re-tighten these screws
carefully since they are threaded into the
plastic.) Attach the cover plate to the tower
with four Phillips head screws.
STEP 33. Slide the boot over the stick
and install it into the cover plate. After the
and will continue to function normally. It
will not be necessary to connect any wires
to the switches on the shifter.
STEP 29. Place the tower over the shifter
mechanism until the bottom edge of the
tower touches the floor. Put the shifter
cover and the indicator cable through the
opening in the top of the tower. Hold the
tower level to the shifter with the bottom
of the tower touching the highest surface
on the floor it will come into contact with
(See Figure 9). Use a ruler to measure
the distance X from the underside of the
tower to the tower mounting brackets on
the shifter mechanism.
STEP 30. Set a pair of dividers at the
distance X, measured in step 29. Hold
the tower level to the shifter mechanism
with the bottom of the tower touching the
highest surface on the floor it will come
into contact with. Holding the tower in
position, place one leg of the divider
against the floor while the other touches
the tower (See Figure 9). Using the divid-
TOOL LIST
1 Common screwdriver
1 Phillips screwdriver
1 1/4" wrench or socket
2 7/16" wrench or socket
1 1/2" wrench
2 11/16" wrench
1 13mm wrench
(Metric transmissions)
1 Drill motor
1 9/32" drill bit
1 1/2" drill bit or holesaw
1 0-50 lb.ft. torque wrench
1 File
1 Tin snips
1 Hack saw
1 Wire stripper
1 Wire crimper
1 Pliers
1 Ruler
1 Dividers
A/R Electrical tape
A/R Tie wraps
(to secure cable)
2/4 Jack stands
IMPORTANT
Before installing the T-handle onto
the shifter put a little grease on the
threads of the stick. The aluminum of
the T-handle may gall on the threads
of the stick and make it impossible to
remove the T-handle from the stick. If
this occurs it can cause the stick to
break if you use excessive force while
attempting to remove the T-handle
from the stick.