Advance Adapters AX15 - Manual (Page 56)

AX15 TRANSMISSIONS:
The AX15 transmission has always been a great transmission able to handle the torque and horsepower of most V8s. The
biggest problem has always been the availability of new units. With the limited availability of a new NV3550, we revisited the
possibly of obtaining the AisIn Warner AX15 transmission and were successful. Although the torque specifications are not listed
on this transmission in any service manual, we feel it‘s similar enough to the NV3550. The NV3550 was the transmission that
superseded the AX15; and Jeep used the same engine with the same vehicle ratings. With the availability of AX15 transmissions,
we can now offer some additional transmission retrofit applications.
The overall transmission case length is 24.000”. The output shaft on this transmission is 23 spline and protrudes approximately
.400”. This transmission is normally found coupled to the AMC 4.0L 6 cylinder engine. Transmissions from 1988-93 used an
internal release bearing, while 1997-99 transmissions were switched to the external slave cylinder. The input shaft length of this
transmission is 7-1/2". The input shaft spline is an 1-1/8” 10 spline, which is the same as Chevy. The pilot tip diameter is .590”
on transmissions 1989-96, and .750” on transmissions 1997-99. The transmissions we offer are all the .750” pilot tip diameter
and have a front retainer that supports a release bearing. We do offer several bellhousing adapters for the Chevy and Ford small
block engines as well as the Jeep V8’s and 6 cylinders.
We offer the new AX15’s under P/N 26-AX15 . The parts listed below by application would also be required when doing a swap.
AX15 Direct Replacement (Internal Release Bearing):
The AX15 internal release bearing was use between 1988 to 1993 in the Jeep vehicles. Since these Jeeps are getting up in
mileage, a new AX15 makes sense as a direct retrofit. We only carry the later version of the AX15 transmission. If you have a
early version AX15 with the internal release bearing, you can swap the retainer on your transmission and retain the internal setup.
You can also switch the bellhousing out for our P/N 712590 and slave cylinder P/N 716340. This would allow you an external
slave cylinder bellhousing.
Parts we offer: Retaining the internal release Switch to external slave cylinder
P/N 716217 replacement internal bearing P/N 712590 external slave bellhousing
P/N 716164 pilot busing with .750” I.D. P/N 716340 slave cylinder
AX15 Direct Replacement (External Release Bearing):
The AX15 external release bearing was use between 1997 to 1999 in the Jeep vehicles. Our new AX15 transmission will be
a direct exchange for the external slave cylinder bellhousing.
AX15 retrofitting (replacing) the AX5:
This kit fits all 4 cylinder Jeeps 1987 to 2002. The AX5 is considered a light duty transmission compared to the AX15. Jeeps
equipped with larger tires and lower gears in the axle & transfer case may find the weak link in the drivetrain is the stock
transmission. You can now install the AX15 in place of the AX5 to gain some drivetrain strength. The nice thing is that when
your ready to replace the 4 cylinder with a larger V6 or V8, the AX15 is an ideal transmission for the power increase. We offer
two kits for the AX5 replacements, one kit is for the external slave cylinder P/N 712563, and one kit for the internal slave cylinder
P/N 712564. These kits include a new clutch disc, adapter plate, and .750” pilot bushing. We do offer an new Centerforce pressure
plate for the Jeep 4 cylinder
Part No. CF361914 . The stock transfer case had a 21 spline input spline, the AX15 is a 23 spline
transmission, requiring a 23 spline transfer case input. We offer new inputs for the NP231’s and the NP207.
Peugeot 5 speed Replacement:
The AX15 is the exact same length. The kits we offer include a new input gear for either the New Process 231 or 207 transfer
case. Due to vehicle variances, some applications may require transfer case linkage modifications. Kits include a new
bellhousing, transfer case shifter linkage, a crossmember adapter mount to retain the stock Peugeot rubber mount, slave cylinder
kit, and an input gear for your transfer case.
Parts necessary to for the Peugeot with a NP207 or NP231 transfer case
712590 - Bellhousing Jeep engine to NV3550 trans.
715545 - Transfer case linkage bracket
716007 - Crossmember adapter plate
716096 - New Process 207 input gear (or) 716053 - New Process 231 input gear
716099 - Shift handle
716340 - Slave cylinder and hose kit
56