Freshen up a 904 in one weekend. Doable?

The rear band is something you can replace, but it pretty much never dies; if you want to be sure you can grab a double wrap rear band when you order everything. I'd grab another front pump bushing, they can be a pain to install, so you have a backup. Same with lip seals.


ALSO: get a rear sprag kit; springs and rollers! They are cheap and good insurance against over-run.


They way I go about building trans; it's better to have too much, then not enough! So as you surf and collect information, make a list. Then order it all; you can return what you don't need easily.



I could rattle on and on, I think that the basics are here though, it should work well!


AIR TEST EVERYTHING! Before you put it back together and after before you put it in; beg, borrow or steal a compressor and a 1/4 blower!

You can air test all clutch packs by lubing up the sealing rings and stacking the front clutch, direct cutch, and front pump together, then blow air into the ports. I sent the diagram so you can get an idea. You want to hear a confident 'thunk' on about 25psi.

If your kit doesnt come with a quick lip seal tool, you can make one out of a thin flexible plastic or use a thin feeler gauge to work the seal in, but one thing in common; is lube liberally with ATF and go slow and apply even pressure. Take your time.

If you can, grab a fresh converter. Unless you have a fire breather; a hi-stall from gotopnh.com is inexpensive and high quality; good stuff right there!


Refresh the post, I added a trick to remove the front pump. This will be a hard rocker!

Another helpful link:

http://board.moparts.org/ubbthreads/showflat.php?Number=6662487