List of all the numbers like Dana 18

When I ask questions you guys answer in code. Is there a list somewhere of what all these trans, and transfer case numbers are?
For instance is a Dana 18 the transfer case on my 69CJ?

 

Thanks, I've read all that. My jeep has a GM 4 speed of some kind in it "Muncie"?? It has a lot of modifications by the PO. Are there more transfer cases than the Dana 18 if that is the right number? Something in not right inside part of the drive train. it rolls fine in nuetral but is locked when I try to go under power. It will break loose and burn rubber and jump but I am really new to jeeps and trying to eliminate things like:
Emergency brake (wouldn't roll in nuetral) Micro brake (ditto) Overdrive I don't know, Transfer case I don't know. Transmission spins fine in nuetral but locks in gear. Could be trans, or input side of the transfer case??
I'm trying to gather enough wisdom to know to pull the transfer and the trans or just the transfer or the over drive or what?

 

Thanks, I don't mean to be a problem. I've been trying and trying to do pictures. I just can't make it work. I'm not very hip to computer stuff.
I am a good mechanic but brand new to jeeps. I am going to pull the transfer case cause I think that has to be the problem.

 

Jeeps came with D18's from the beginning of time until AMC switched to the D300 around '79.

they quit the dana 18 in 72 right? Used the dana 20 from there until the change to the 300 in 79 IIRC..

Anyhow yes almost without question you have a dana 18 transfer case, now as far as the transmission goes that is hard to say because somone swapped in a 4 speed, if you could get some pictures of the tranny it'll be easy to identify or take a look at www.novak-adapt.com and there is good info to help you ID a transmission. It sounds like you have some broken teeth somewhere in there so you need to get a look. You can very easily drain the oil in the transfer case and take the oil pan off the bottom, it should look like the pic i attached, if it is in the tranny you can either just pull the shifter/cover from the top or some 4 speeds have an inspection cover on teh side... Like i said if we have pics of your tranny we can be a lot more help..

BUBBA

 

here is what I would do
pull the inspection covers off the differentials, look inside, rotate as nec to check all teeth; check gear ratios to make sure they match.
remove the transfer case inspection cover, look inside, inspect all teeth
pull the o'drive off and check
if that all looks okay, most likely the trans
don't pull something out/off till you know where the problem lies

 

Thanks, my trans has a cover on top and I've had it off and things look OK. Since it tows and rolls just fine with everything in nuetral I'm assuming differentials are OK. Is that a bad assumption? Could the OD lock up the drivetrain?
I just got back from having the headers and mufflers fixed so I'm going to put it up on jacks and start checking. I've also been trying to reach Herm.

 

put the jeep in 4wd w/trans in nuetral and see if it locks up. also check the gear ratios front/rear.

 

It is up on jack stands. However with trans in nuetral and the transfer in 4 wheel it does not lock up. What does that say? It shouldn't turn the wheels with trans in nuetral should it?

 

I figgered.. must be those damn photons from the 'puter screen eating brain cells..


BUBBA

 

if it locks up with the transmission in neutral and the tranFER case in 4 wheel it means that the the locking is taking place in the dana 18 transFER case not the transmission because the transmission is "off line" as it were.

(at least i think this is correct)