Putting R134a Refrigerant In A 1991 W126 350SDL--Use A Different Expansion Valve? - Page 4 - PeachParts Mercedes-Benz Forum

Squiggle Dog · #1 08-08-2016, 04:14 PM

I looked at the different types of expansion valves in the link. Thanks.

The W126 350SDL uses an expansion valve insulation housing 126 835 06 40. You have to order two as one goes on each side. They are usually available for under $5 each.

Demothen · #2 08-09-2016, 10:51 AM

Quote:

Originally Posted by Squiggle Dog

I looked at the different types of expansion valves in the link. Thanks.

The W126 350SDL uses an expansion valve insulation housing 126 835 06 40. You have to order two as one goes on each side. They are usually available for under $5 each.

Thanks. How are those pieces supposed to be held together? They're cheap enough that I might as well buy the right part and not worry about trying to get tape wrapped around them.

Squiggle Dog · #3 08-09-2016, 08:22 PM

Quote:

Originally Posted by Demothen

How are those pieces supposed to be held together?

I don't know. Maybe adhesive spray or contact cement? I've seen some with tape holding them together.

Zulfiqar · #4 08-08-2016, 04:19 PM

Quote:

Originally Posted by Demothen

Insulation over the txv? I was not aware of that. Anyone have a part number for a w123?

Edit: just read the FSM again and noticed it mentions opening the insulation. Did a bit of research and it seems like I could just wrap it with some foam tape if necessary, but it would be nice if I had the correct part.

you can either buy the foam pieces from benz or get a roll of presstite tar tape, both do the same job.

The insulation is to prevent the thing from sweating and making your interior wet.

compu_85 · #5 08-09-2016, 10:20 PM

They come with double sided tape on the edges.

-J