B2 Piston Help!
 

I am trying to fix my b2 piston on my 83 300sd. I cant get the old one Out. I have tried for hours. All the small peices came out, but the large main piece is stuck in there and wont come out. Anybody ever have this happen to them? What can I do?

I'm having the same problem. I'm assuming the remaining part is wedged in there but I can't figure out how to shift it either. I'm curious to see what kind of advice you get.

Sorry I can't help either. I need to do the same repair on my 83 300SD. If I could ask...Where is the B2 piston located ?

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83 300SD
3 Fords

It's located on the passenger side of the transmission just above the transmission pan.

I've done a few in the car, never had the piston get stuck like that.. What have you done to give yourself more room to manuver in there?

Jonathan

Ok, I just got mine out. I had to muscle it out with a crow bar. It was really stuck. Now I'm trying to get the seal out...it seems pressed in but I can't knock it out from behind.

Just curious, how did you use a crow bar to get it out??
I am thinking about using a slide, but I am worried about metal chips getting in the tranny from drilling the tap hole.

I used the curved end of the crow bar and stuck it through what was left of the piston and using the case as leverage and applied steady force...it eventually yielded although sideways at first. At this point my next problem was removing the seal that holds the bushing in. I basically just deformed it using a thin screw driver and hammer. It was a bear. I've finished it however and will test drive tomorrow.

The B2 piston is probably stuck / seize on the aluminum bushing. Try tapping the piston in to free it up. If that does not work, the valve body has to be removed and some persuasion used. Once the valve body is removed you can easily remove the seal and bushing.

If you can not remove the piston seal from the exterior easily, then with a screwdriver as a chisel crush the seal into its center it should pop out then.

I did everything but replace the metal bushing. I had the plastic replacement, but I didn't feel like going through the extra work. Is it nessecary to replace it? Who has left the metal one in?

I should also say, I was able to get it out with a crowbar too, and alot of force. One last question though , Did any of you have small metal chips at the end of your transmision pan? Is that the result of secondary damage, or does the braking of the b2 piston leave some metal behind?