Advance Adapters AX15 - Manual (Page 24)

24
Modified front bearing retainer installed on
the front of the NV4500 transmission
Regarding P/N 712554 adapter plate kit to Jeep AX15 bellhousing: In 1989, Jeep introduced the AX15 5 speed with the 4.0 high
output engine. By using the Dodge transmission along with this new adapter plate, we are able to adapt to the original Jeep
bellhousing and retain all of the original clutch components.
In order to adapt the Dodge Standard Duty NV4500 to a Jeep AMC 6 cylinder engine, we found it easiest to adapt directly to the
original AMC bellhousing. We have designed this adapter plate to bolt to the NV4500, providing the correct bolt pattern and dowel
pins for the stock AX15 bellhousing. This kit requires you to remove and modify your NV4500 front bearing retainer, then install
it on the front of the NV4500 transmission. With the adapter plate and retainer installed, the front of the NV4500 is an exact image
of the stock AX15 transmission. The stock internal release bearing stays the same; however, it should be replaced with Jeep
Part# 5252137. A new pilot bushing is provided in the kit to fit the tip of the NV4500 input shaft. The stock clutch components can
be retained; however, a new clutch disc and pressure plate should be used. We offer a Centerforce clutch disc
(P/N 384193)
and pressure plate (CF361897) as an upgrade to a stock clutch system.
NOTE: This kit will only fit AX15 transmissions that were equipped with the internal throw out bearing. AX15 transmissions that
have an external slave cylinder must use the full bellhousing kit.
JEEP 6 CYL. ENGINE WITH A NP231 NV4500 KITS JEEP 6 CYL. ENGINE WITH A NP231 NV4500 KITS JEEP 6 CYL. ENGINE WITH A NP231 NV4500 KITS JEEP 6 CYL. ENGINE WITH A NP231 NV4500 KITS JEEP 6 CYL. ENGINE WITH A NP231 NV4500 KITS
(AX15 REPLACEMENT) (AX15 REPLACEMENT) (AX15 REPLACEMENT) (AX15 REPLACEMENT) (AX15 REPLACEMENT)
P/N 27-0012T - 29 spl. DODGE Gas NV4500 to Jeep 4.0L 6 cylinder Full bellhousing design
(1989-05 AX15 & NV3550 replacement for both stock external & internal slave cylinder design)
The overall assembly length is 24.750”. The 4.0L Jeep 6 cylinder engine can be easily adapted to the NV4500 using our adapter
bellhousing. The internal release bearing on the early AX15s will be eliminated, and the external slave cylinder on the later model
AX15 and NV3550s is replaced with a new style slave cylinder. Refer to
Page 26-27 for more information on the 712568 bellhousing
kit.
When coupled to the AX15, the stock transfer case used a 23 spline input gear. If you
obtain a 23 spline NV4500 the stock transfer case input gear can be retained. If you get
a later model NV4500 transmission with a 29 spline output shaft, our kit 27-0012T comes
with a new 29 spline input gear for the New Process 231 transfer case.
The transfer case adapter is the shortest design possible to couple to the New Process
transfer case. This adapter comes with a shifter bracket that allows the use of your stock
transfer case shifter. Jeep TJs require a different transfer case shifter bracket which can
be switched out before shipping the kit. These packaged kits include a new support
crossmember which couples to the stock skid pan. Modifications will be required to your