B&M 80690 MEGASHIFTER - Manual (Page 7)

7
portion.
STEP 24. Move the transmission se-
lector 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 completely. Be
sure that the swivel will slide freely in
and out of the hole in the selector lever.
With the swivel in the selector le-
ver, move the shifter to the Park posi-
tion, as far forward as the shifter will go
without forcing it. (The shifter has fur-
ther travel that is used to reach the GM
Park position but is not used on the
Chrysler transmissions. Trying to force
the shifter will damage 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 dam-
age the cable, the shifter or the trans-
mission. Simply start at the beginning
and carefully check all your steps.
IMPORTANT: Do not froce the shifter
to over travel into the Park position.
This will move the shifter into GM Park
position and will damage the cable or
the transmission.
STEP 25.Check the operation of the
throttle linkage again. The linkage must
operate smoothly with no bind. All the
transmissions using automatic valve
bodies must have the throttle linkage
connected and operating, or transmis-
sion 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. Dis-
connect the battery ground cable be-
fore wiring the backup light switch.
Locate the original backup light switch
on the steering column 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 opera-
tion. Adjust the switches on the shifter
if required.
’69 and Later: The neutral safety/
backup switch is located on the trans-
mission and will continue to function
normally. It will not be necessary to
connect any wires to the switches on
the shifter.
STEP 27.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 28.Set a pair of dividers at the
distance X, measured in step 27. Hold
the tower level to the shifter mecha-
nism 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 dividers, scribe a dow opening. Place the shifter in the
Park position then remove the T-Handle
from shifter. Place the cover plate over
the stick and onto the top of the tower.
Route the indicator 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 adjustment, loosen
the screws holding the indicator cable
clamp to the cover plate and slide the
cable bracket to adjust the indicator
position. (Retighten these screws care-
fully since they are threaded into plas-
tic.) Attach the cover plate to the tower
with four Phillips head screws.
STEP 31.Slide the boot over the stick
and install it into the cover plate. After
the boot is installed in the cover plate
and into the stick, install the T-Handle
and the jam nut. Tighten the jam nut
when the handle is properly oriented.
OPERATION
The B&M Megashifter normally
functions as a straight gate detent
shifter from Park to Reverse to Neutral
to Drive and as a ratchet shifter from
Neutral to all forward gears. Refer to
the following instructions for proper
operation:
STRAIGHT GATE MODE: With the
trigger in the upper position, the shifter
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 29.Install the indicator light bulb
in its socket on the shifter cover plate.
Run a length of wire from the vehicle’s
instrument light circuit to one of the
wires. Connect the other wire to a good
chassis ground. A shifter mounting
bolt should be satisfactory.
STEP 30.Snap the shift position win-
dow into the cover plate. The window
snaps in from the top with tabs insert-
ing into slots at either end of the win-
IMPORTANT
Before installing the T-handle onto
the shifter put Loc-tite 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 re-
move 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.
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