Installation Instructions: Tummy Tucker™ – TJ Rubicon models
Nth30116 v4.doc page 6 of 13 www.aev-conversions.com
NOTE: If you are installing this TT with either an Nth° long-arm system or you have a motor mount
lift, you will need to add ‘shim washers’ (large diameter washers supplied with this kit) between the top
of the isolators and the bracket. For Nth° long-arm add two washers per side; for motor lifts add at
least 3 per side – if you have both you will need 4-5 washers per side. This is necessary to keep the
t-case from contacting the TT under the front-output area.
Auto
Brkt.
Manual
Brkt.
Low style
’87-’02 MY
High style
’03-’06 MY
Step 9: Pre-assemble New Transmission Mount Adapter Brackets
. The new mount supplied with the TT
has two parts – the main bracket to connect the two new isolators to the trans, and a bolt-on extension
for the exhaust ‘steady rest’ tube. There are two main types of trans brackets: one for all factory autos,
and one for all factory manual trans used with 4.0L engines (there is also a different bracket for AX-5
manuals). The exhaust extension comes in two styles: ‘low’ for ’02-older vehicles, and ‘high’ for ’03-06
TJs. Consult the pictures below to confirm that you have the correct brackets for your vehicle (trans
brackets show the bottom side with front of vehicle at top of picture; exhaust brackets shown from ‘trans
side’ of bracket with front of vehicle towards left side of picture.)
For pre-assembly, either extension can
be bolted to either trans mount in two
positions depending on your application:
inboard (closer to trans) for use with Nth°
long-arm suspensions, and outboard for
‘stock position’ to be used with Nth° short-
arm or any other suspension systems. Pre-
assemble the exhaust extension to the main
bracket with one 3/8” x 1” bolt and nut
through the appropriate non-slotted hole in
the main bracket.
The isolators are mounted differently for
the left (driver’s) and right sides. For the
driver’s side, place a lock washer and then a flat washer on the remaining 3/8”x1” bolt, then pass the bolt
from the top side of the slotted hole in the bracket and thread it into the hole on the top (rubber side) of
the isolator (for autos, ignore the extra forward slot on this side – use the one directly across from the
passenger-side slot). For the passenger side, you must first drill out the threads in the center hole of the
isolator to 3/8”, then place the provided socket head bolt up through the drilled-out hole from the bottom
of the isolator and press the head of the bolt into the hex-shaped void in the rubber. Position the isolator
under the passenger-side slot and add the ‘flag nut’ to the bolt on the top side.
(6 pages)
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