Form Rabber eround expansion valve
 

What's the form rubber around the AC expansion valve (under the dash) for. Mine is 50% disintergrated. If really needed, can I just buy new form rubber and wrap around it, (1981 300SD).

Thanks.

Any insulating foam that will fit will work, it's there to keep condensation from dripping on the floor.

Peter

Thank you Sir!

Could also be the gunky tube falling apart above the glove box that is used by the ACC system.

foam
 

mercedes still sells the original foam, let me know i can get you a part number
Ray
mercedessd@cox.net

I've wondered what that ginky tube was for, mine turned to gunky little pieces that last time I pulled the glove box. I replaced it with a piece of old garden hose. Is it important what it is replaced with?

Compressor oil from the internals of the A/C system has a way of making the foam rubber covering crumble (IME, anyway). Does the remaining foam seem oily? You could have a leaky expansion valve.

Russ M

126 835 06 40 part # for the foam "clamshell" around the expansion valve.

In the past, I've used a sponge cut to fit and with apartial "split" in it, and it seemed to work just as well.

Lietuviai, most folks use water pipe insulation foam tubes that you get from places like Home Depot.