Advance Adapters AX15 - Manual (Page 54)

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AX15 REPLACEMENTS: AX15 REPLACEMENTS: AX15 REPLACEMENTS: AX15 REPLACEMENTS: AX15 REPLACEMENTS:
We have had requests for the NV3550 transmission as a AX15 replacement. The NV3550 has the exact same configuration as
the AX15 transmission. When replacing an AX15 that has an external slave cylinder on the bellhousing, the NV3550 can be bolted
directly to the stock bellhousing. For Jeeps that have the AX15 with an internal hydraulic release bearing, you will be required to
purchase our bellhousing and slave cylinder kit listed below. The transfer case side of the NV3550 transmission is the same as
the AX15, with the exception of losing a bit of spline engagement.
P/N 26-3550R - NV3500 transmission
P/N 712590 - Jeep 4.0L bellhousing to NV3550 (for replacing the AX15 internal hydraulic)
P/N 716340 - Jeep slave cylinder kit for 712590 bellhousing (replacing AX15 internal hydraulic)
P/N 715542 - Jeep TJ shifter bracket
P/N 715545 - Jeep YJ shifter bracket
JEEP CONVERSION BELLHOUSING: JEEP CONVERSION BELLHOUSING: JEEP CONVERSION BELLHOUSING: JEEP CONVERSION BELLHOUSING: JEEP CONVERSION BELLHOUSING:
712590 - This full bellhousing is 7.500" long. This bellhousing can only be used with a hydraulic clutch assembly. The NV3550
bellhousing is designed to work with a stock 1987 to 2005 Jeep clutch assembly or a Centerforce pressure plate (P/N CF361890)
and clutch disc (P/N 384193) . We offer a slave cylinder kit (P/N 716340) that includes all of the necessary components to
fit this bellhousing and to work with your stock Jeep master cylinder. I f the incorrect pressure plate or disc is used, or the stock
flywheel has been resurfaced(to thin), proper clutch operations may be effected. The flywheel should be 1" thick. If a thicker
flywheel is used, the front retainer of the NV3550 will need to be shortened to avoid interference with the clutch disc hub.
This bellhousing can be use with a stock Jeep slave cylinder from the 2000 to 2005 Jeep "TJ"; however, the slave cylinder
from Chrysler is only sold as an assembly which includes a master cylinder and plastic hose. This assembly retails for
close to $200.00. The biggest downside of this assembly is when trying to use it on an early style "YJ". The slave cylinder
is the only part you can retain, and you would still require some additional components for this slave cylinder to work properly.
We have devised a slave cylinder kit
(P/N 716340) that includes all of the necessary components to fit this bellhousing
and to work with your stock Jeep master cylinder.
This bellhousing uses a dowel pin alignment to both the engine and transmission. The bellhousing must be bolted to the
transmission before being installed into the vehicle. If using a 258(4.2), the stock Jeep dust shield from a AX15 or NV3550
(4.0L) should be used and the starter must index into this sheet metal dust cover. A new pilot bushing has been supplied
and must be installed fully into the stock engine crank.
This pilot bushing is manufactured out of a "oilite bearings bronze"
which must not be assembled with any type of grease.
Reinstall the new or stock clutch components. Install the transmission and bellhousing up to the Jeep engine. Use the
stock bolts from the engine to fasten the bellhousing to the block. Make sure the dowel pins are installed in the block before
bolting on the bellhousing. If your engine requires a flywheel sensor for emissions control, install the flywheel sensor using
the stock dowel bolts to obtain the proper alignment. If you are not going to use the a flywheel sensor but want to cover
the access hole, you will need to fabricate a cover using either a piece of rubber or thin piece of sheet metal. This should
be installed before the bellhousing and transmission are installed in the vehicle.
These components are designed to slip together. Do not pull components together with the bolts as damage to the
assembly can occur. When installing the NV3550 and the bellhousing into the vehicle, you will be required to loosen the
exhaust from off of the exhaust manifold. This will allow proper clearance to fit the bellhousing between the body and exhaust
system. We also recommend that the transmission shift tower be removed so that the transmission can fit closer to the
floorboard - allowing for an easier clutch alignment to the input shaft of the transmission. Be sure to cover the shift tower
hole in the transmission to avoid debris from entering the transmission.