Jeep Cherokee AW-4 to AX-15 Swap
Parts you’ll need:
AX-15 transmission from a Jeep Cherokee 4.0 6 cyl (1993-1999)
Bell housing for AX-15 (NV3550 is the same)
Manual transmission clutch housing spacer
Clutch kit (pilot bearing, clutch disk, pressure plate, throw out bearing)
4.0 flywheel and all bolts
Hydraulics - Master/Slave cylinder assembly from the same year as the trans you are swapping in
Clutch/brake pedals assembly from the year of your vehicle, or as close as possible
PCM from a Jeep with a manual trans from a year compatible with yours (yes, you need it to pass inspection!)
Shifter boots (one screws into trans tunnel, one cosmetic cover over center console)
Transmission tunnel plate adapter for manual trans (has cut-out for shifter to come through)
All transmission mount hardware and brackets
Transfer case shift linkage and underside brackets from transmission and body
Front and rear drive shafts from a manual with the same rear as you have
NOTES: This may be obvious to many people, but manual XJs with the 4.0 came from the factory with 3.07
gearing, whereas automatics came with either 3.55 or (rarely) 3.73. I love the 3.55 ratio with the manual for up
to 31” tires, but if you do not plan to run at least slightly oversized (at least 235/75R15 ~28”) tires, this is
something to consider. If you are already lifted/re-geared with oversized tires, make sure you check a tire size
to gear ratio chart and read up on what size tires and gears you should run with the manual transmission.
Also, get a good manual, such as Chilton’s or Haynes manuals from your year of Jeep as well as the year of the
Jeep you are using the majority of your parts from. Many of the torque specs you will need are extremely
important for this swap, so be sure to double check all torque specifications when installing all transmission and
clutch parts.
Contact – Hopefully this write-up is complete, but feel free to ask any questions you may have, I’ll be happy to
answer if I can.
JonTirrell@gmail.com : NAXJA: Char-Broil : AIM: CharBroilXJ
Getting Started / PCM Swap:
Make sure you have all the parts you need before starting this! You WILL need everything listed above, and of
course, this is a perfect time to make sure you get years of service out of your swap by getting a new clutch kit
that replaces everything listed under “clutch kit” above. If you are installing a used flywheel of unknown
integrity, you should also consider having it resurfaced now, it’s just one of those things that’s worth the
money. You should also take a look at this thread to make sure that the auto trans you are replacing has the
same output shaft as the manual trans you hope to install
http://www.naxja.org/forum/showthread.php?t=101120
Get the file Download here | File PDF