Advance Adapters 50-8704 - Manual

ADVANCE ADAPTERS INC. P/N: 50-8704
P.O. Box 247, 4320 Aerotech Center Way
Paso Robles, CA 93447
PAGE 1 OF 2
Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 07-11-06
KIT CONSISTS OF:
No.
Qty Part No. Description
SPECIAL NOTE: The components packaged in this kit have been assembled and machined for specific type of conversions. Modifications to any of the components will
void any possible warranty or return privileges. If you do not fully understand 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 values, wiring diagrams and other related equipment. These manuals are normally available at automotive
dealerships and parts stores.
JEEP & FORD T98 4 SPEED TRANS. TO SMALL
HOLE JEEP DANA 18 (THIN ADAPTER)
1. 1 51-8704 ADAPTER PLATE
2. 1 52-7201 MAIN SHAFT WITH 6 SPLINES (Ref: 711372-T98)
3. 1 716181 SPACER BUSHING
4. 1 716568 GASKET
5. 1 716737 SEAL (National #473468)
6. 1 723701 HEX NUT 3/8"-16
7. 1 723714 STUD BOLT 3/8"-16 x 1-1/2" LG
8. 4 723730 S.H.C.S. 3/8"-16 x 1-1/4" LG.
9. 1 723750 SEAL WASHER
10. 2 724317 7/16"-14 x 1-1/4" S.H.C.S.
11. 1 728701 NYLON LOCK NUT 7/8"-16
12. 1 JP001 JEEP INSTRUCTION MANUAL
JEEP & FORD T98 4 SPEED 1966 & UP:
The transmission can be identified by a case length of 11-7/8". The shift cover has a casting number of 13-01 or 13-
09. The P.T.O. opening is on the right hand side toward the front of the case and the shift cover is mounted to the top
of the case with six bolts. The new shaft furnished with this kit must be carefully compared to the original shaft removed
from your transmission.
When assembling the gears onto the new main shaft, make sure that all gears have the proper end clearance required for
oiling. Make sure that all transmission assembly work is done by a competent mechanic. All surfaces must use a gasket
or sealant to prevent oil leakage. Warner gear had used two different shaft designs for the spacer between second and
third gear. Some transmissions will use a snap ring and thrust washer, while others will use a built in shoulder. Both shafts
are interchangeable.
This adapter it was developed for the early model Jeeps that had a short wheel base and are unable to use the longer adapter
kits. This adapter is very similar to the original Jeep design with exception of the transmission case bolt pattern. The
adapter is available in two different styles. One for the small hole transfer cases and one for the large hole transfer cases.
Make sure you have received the correct adapter for your installation.
The adapter plate will bolt directly to the back of the T98 transmission using the socket head cap screws. The transfer
case must index onto the adapter plate in order to maintain proper alignment. A special stud bolt, seal washer and hex
nut have been supplied for the one bolt that threads into the transfer case. With the adapter into position, you must install
the spacer that will locate the original output gear in the proper location. The adapter plate must have clearance over the
counter shaft and reverse idler shaft. If necessary, a small portion of the aluminum casting may need to be removed for
the necessary clearance.
The oil seal that has been supplied must be installed into the new adapter plate with the open side towards the
transmission. This adapter kit is not compatible with T18-T19 4 speed transmissions.