Advance Adapters 50-0431 - Manual (Page 3)

SPECIAL NOTE: The components packaged in this kit have been assembled and machined for specific types of conversions. Modifications to any of the
components will void any possible warranty or return privileges. If you do not fully understand the modifications or changes that will be required to complete
your conversion, we strongly recommend that you contact our sales department for more information. This Instruction Sheet is only to be used for the assembly
of Advance Adapter components. We recommend that a service manual pertaining to your vehicle be obtained for specific torque vales, wiring diagrams and
other related equipment. These manuals are normally available at automotive dealerships and parts stores.
ADVANCE ADAPTERS, INC. P/N: 50-0431
P.O. Box 247, 4320 Aerotech Center Way New Kit: (02/03)
Paso Robles, CA 93447 PAGE: 3 OF 4
Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 02-11-13
4. Remove the 51-6800 adapter, then press the seal into the casting with the open side toward the transmission.
5. For final installation, install the rubber o-ring on the transmission side of the adapter. A thin bead of silicone should be
applied as a sealant.
6. The four 3/8"-16 x 1-3/4" Socket Head Cap Screws are then used to secure the casting to the transmission.
7. Two rotations are provided on the casting. Choose the rotation that best suits your application.
8. Studs and nuts are provided for securing the transfer case.
9. Two of the positions on the rotation will require removal of two studs from the transfer case and substitution by the two
3/8"-16 x 1-1/4" Socket Head Cap Screws. This is due to lack of wrench clearance around the casting.
10. Use silicone sealant on both sides of the transfer case gasket. Use Loctite on all bolts.
Notes:
Again, when installing the new transfer case adapter, make sure that the transfer case input sleeve and the output shaft do
not bottom out. We have found on occasion that a transmission output shaft may be slightly longer than we have allowed for;
and when coupling into the transfer case, we find a small amount of interference. The adapter housing and shaft must be
assembled to the back of the transmission without interference.
DO NOT FORCE THE NEW TAILHOUSING ONTO THE
TRANSMISSION. If assistance is needed, please feel free to call us on our toll free number, 1-800 350-2223.
This adapter can be used on either Jeep Wranglers 1987 & newer or Jeep Cherokees 1984 & newer. The only difference is
the transfer case shifter linkage. The adapter
combination is 2.875" thick and will provide an
overall transmission assembly length of 24-7/
8". On conversions using the 4L60E, you can
anticipate driveshaft modifications. The adapter
crossmember support is designed around the
replacement of a manual transmission. If you
are replacing an automatic transmission, you
will find that the crossmember support will
hang too far down when it is bolted to the
bottom of our new adapter housing. We
suggest that you purchase a crossmember
support from the manual transmission applica-
tion to simplify this problem.
The transfer case shift linkage is mounted in
two different designs. Jeep Wranglers 1987-
96 will require shifter bracket No. 715523,
while Cherokee conversions will require shifter
bracket No. 715524. Some applications will
require the purchase of a stock Jeep bracket,
#53004280. This is the most universal bracket
for YJ Wranglers. TJ conversions will need to space the body bracket to use the stock linkage.
GM 4L60E TO NP231 TRANSFER CASES (21SPL)
upgrading to 87-95 23SPL.