thanks Dan. Makes sense. This is a one year only AT used in 1981. It
has no cable for throttle position. If I can get seal numbers they are
easy to get from a bearing house. B2/K3 Probably Autohaus, but maybe
one of the others.
Out of curiosity, what special tools are needed to repair innards?
Dan Penoff via Mercedes wrote on 8/26/19 6:32 AM:
If it was out of the car I would probably replace all the external stuff I
could get to, that is, seals like the front pump seal, tailshaft, selector rod
shaft, B2/K3, vacuum stuff, etc. Not sure I would tear into the internals
unless absolutely necessary. I’ve rebuilt domestic slushboxes, which aren’t a
whole lot different from the Mercedes version, but only when I had all the
tools handy.
Simple Green or any degreaser for the outside. That and a stiff bristle brush.
If you’ve never cracked open an automatic transmission I wouldn’t suggest doing
it with this one. If it was something simple like a Powerglide or THM that’s
one thing, but without the tools required you’ll get in over your head quickly
and end up with a bunch of scrap aluminum. Since there’s no real way to test it
short of reinstalling, you really don’t want to go to the effort only to have
to yank it back out, either.
Unless the fluid that’s in it is burnt, I would just do the external stuff,
change the fluid and filter, pop it into the car and call it good.
-D
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