|
Remove Existing Parts |
| Remove the shift knob by placing a 15mm open-end wrench under
the knob. Hit the wrench (as illustrated) so it pushes the knob up
and off the shifter shaft. |
 |
| Aftermarket knobs are often retained by one or more socket head
setscrews.
|
| Remove the center console (if your car is so equipped) and
remove the original shifter.
|
|
Evaluation |
| Ensure that all of your shifter bushings are in good shape.
These vary by model and year, but any slop in the linkage will
reduce the precision of your new shifter.
|
| 914:Inspect the clutch tube in the tunnel for evidence of
being rubbed by the shifter. |
| The clutch tube is often broken loose from its welds to the
tunnel, and must be repaired for proper clutch operation.
|
|
Install RennShift |
| Bolt the shifter base on to the housing, positioning the reverse
feature in the same quadrant as reverse gear (left front for 901,
right rear for 915).
|
| 911 and 914 tail shift: Clean out the old bushing and
grease from the socket for the ball cup bushing.
|
| Make sure the small hole on the side of this cup is clear, as it
can be plugged with dried grease.
|
| Check the socket head setscrew (on the left side of the socket)
to be sure it is tight.
|
| Slide the rod bushing bracket forward so it can drop into the
tunnel. Grease the socket and lower the new shifter into position,
inserting the ball cup into its socket. |
 |
| Start the 2 new 6mm socket head capscrews with flat washers into
the rod bracket holes and lightly tighten. Install the 3 new 8mm
capscrews with flat washers. Tighten all the fasteners.
|
| 914 side shift: Grease the bronze bushing and two bronze
thrust washers and install on the new shifter.
|
| Grease the shift rod pivot and reinstall along with the original
nut, bolt, and lock washer, placing the nut on the passenger’s side
of the car.
|
| Ensure that the shift pivot rotates freely – remove any burrs if
it does not.
|
| Install the shifter by sliding the shift pivot onto the shift
rod in the tunnel.
|
| Install the 3 new 8mm capscrews.
|
| Lightly tighten the clamp bolt through the hole in the shifter
plate and check the adjustment.
|
|
Adjust Shift Pattern |
| Perform shifter adjustments in the center plane allowing the
shifter springs to set the center location.
|
| Engaging 2nd gear (901) or 3rd gear (915) will expedite the
process. Fore-aft adjustment is determined by the reverse lockout,
and will often benefit from a road test to ensure proper operation
in a dynamic environment.
|
| 914 side shift: Adjustment requires trial and error to
match the center plane of the shifter to the 2nd/3rd gear plane. A
road test with tools to check and adjust the shift from 1st to 2nd
is often the best method.
|
|
Adjust Gear Stops |
| After the adjustment is complete, loosen the locknuts and adjust
the gear stops.
|
| Hold the gearshift as far as it will go in gear and turn the
socket head set screw until it just touches the shift stick. Back
the screw away to leave a slight clearance and tighten the lock nut.
|
