4R100 rebuild

[Dieselpwrdredneck]

Has anyone ever done they're own trans. rebuild and "beef up." how hard was it, been kickin around the idea of gettin a junk one and buildin it up for my truck, i think it might be cheaper than gettin one already built. i've seen internel tranny parts for sale online. if you did it wher did u get parts and all the seals?

Thanks
Neal

 

[WD40]

I hear of some of the guys tearing into them, but there is no way I would. Wish list, a BTS.
Good Luck if you do.
Doug

Wish list, a BTS.

 

[iracemine]

All of my friends that have.... have failed. Either immediately or only a few hundred miles later. Its like a hair cut. You just cant get any of it wrong. And your going to have to practice many times before getting all of it right.

 

[DaveBen]

That and buy all of the special tools. I don't have a left handed dumofletchy and I don't want to spend the $$$ to get one.

Dave

 

[trackspeeder]

Rebuilding a tranny isn't that hard. Most failures after a rebuild are from not installing the parts correctly. Other failures come from debris, poor quality or out of tolerance parts.

Best thing to do is pick up a copy of the ATSG manual. Read it thoroughly.
This will help in rebuilding the tranny. You need to know about stack clearances, air test ect.

Be sure to clean the case well. You want no dirt debris or any other crap in the case. De bur any surface where the steels contact the case. Check all parts to be reused for excessive wear. Use new bearing and bushings.

Most important. When using aftermarket frictions and steels, use the specs provided. If you use the stock Ford spec, good chance the tranny will fail.

Tools, they can be found on evilbay or made in your garage.

 

[Dieselpwrdredneck]

i just thought it would be fun to learn, and good aftermarket transmissions are so dang expensive.

 

[trackspeeder]

i just thought it would be fun to learn, and good aftermarket transmissions are so dang expensive.

Try it. Transmissions are fun.

Remember to check everything. If it doesn't seem right, check it again.

 

[WD40]

If you do it I sure hope you come back and tell us how it went.
Doug

 

[Dieselpwrdredneck]

if i dont rebuild one i atleast want to get my hands on a junk one and tare into it

 

[trackspeeder]

The only special tool you will need to break down a tranny is a slide hammer.
You will need it to pull the pump.

Screwdrivers will pop the snap rings.

To put it back together you will need more special tools.