Talking with Paul Weitlauf, I realized there were more differences
between the overdrives than I originally thought. I have a small hole
Warn Overdrive on my CJ-2A and Paul has a big hole Warn Overdrive on
his CJ-5. On his overdirve, the shift rail comes out the back of the
case and on mine the shift rail comes out the front of the case.
I double checked the Advanced Adapters catalog and they show an
overdrive with the shift rail coming out the back of the case. I'm not
sure if all the new Saturn Overdrives have the shift rail out the back
or only the big hole untis. A picture of Paul's overdrive is on the
Probably the most frequently asked question about the Warn/Saturn
overdrive is, "How do I remove the overdrive?" Here are some
instructions on how to remove it.
Removing a Warn Overdrive
From JeepTech, the Jeep knowledge base.
by Terry Howe
I get confused every time I remove a Warn (aka Saturn) over drive
from a Dana 18 transfer case that was in a Jeep or Scout 80. Looking
at the exploded view from Advanced Adapters helps, but sometimes I
still get it wrong and I have to figure it out all over again. I
figured if I wrote up the procedure, I wouldn't forget again and at
least I'd have something to look up.
- Remove the five bolts that run through the case of the over
drive with a 9/16" socket.
- Pry the over drive case away from the Dana 18 case. Keep in
mind that the gasket sealer and the bearing that rides in the
plenetary hub assembly may fight a bit.
- Remove special snap ring that is behind and can be seen
through the planetaries.
- Remove the special lock washer that is behind the snap ring
with some needle nose pliers.
- Use long 1/2" extension to remove planetary hub assembly from
transmission output shaft.