Expansion Valve Replacement? - Page 2 - PeachParts Mercedes-Benz Forum

engatwork · #16 11-06-2012, 07:39 PM

Quote:

But are you really saying that there will still be freon in the system even after I replace the compressor, drier, and expansion valve?

The answer is no, there will not be any freon left in the system once you break those lines apart.

I recently replaced the evap on my w124 and I reused the existing expansion valve without any issues.

Philoprof · #17 11-06-2012, 08:10 PM

Quote:

Originally Posted by Air&Road

I am assuming that you mean that you are replacing the compressor with a rebuilt Tecumseh/York.

Actually, I just picked up a new ACDelco, which came in a GM box. And it appears to be well built.

Quote:

Originally Posted by Air&Road

There is no need to replace a hose unless it is leaking. That said, in the case of a refurbishment project, you can remove the hose assemblies and take them to your local hydraulic hose shop where they can do a thrifty replacement of the rubber hose.

I'd rather not play with the hoses, as they're not leaking and they look pretty good. But if I change my mind, I'll take them to a shop. Thanks for the advice.

lorainfurniture · #18 11-06-2012, 09:13 PM

Quote:

Originally Posted by Philoprof

Actually, I just picked up a new ACDelco, which came in a GM box. And it appears to be well built.

I'd rather not play with the hoses, as they're not leaking and they look pretty good. But if I change my mind, I'll take them to a shop. Thanks for the advice.

Just flush the hoses. I have successfully used acetone to flush it out. It really cleans out the gunk, and evaporates quickly. Be careful with it, as it eats paint very quick.

Philoprof · #19 11-10-2012, 08:56 AM

Thank for all the advice.

A few final questions before I take this project on:

1) How much and what kind of PAG oil do I put in the new Delco compressor, which doesn't have any oil in it?

2) How about the drier? (AFAIK, the 107's take app. 2 lbs of 134, if that makes any difference).

3) The 107 Manual says to cover the Expansion valve with "no drip tape." Can I just use the Armaflex or Frost King pipe insulation tape that Home Depot and Lowe's carries?

Thanks very much for all the help, guys. It's been greatly appreaciated.

Bill