Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-03-2004, 09:52 PM
Ron in SC's Avatar
Registered User
 
Join Date: Aug 2003
Location: Charleston, SC
Posts: 1,095
Question Expansion valve removal problem

Problem with removal of expansion valve on 92 300E. I removed one of the 3mm hex head bolts but could not remove the other, it's stripped.

I removed the all plastic stuff around and over it to get good acess, but I'm not sure how to proceed.

My options seem to be:
1-try to remove the stripped bolt with an easy out, I do have room I think with a right angle drill,

2-drill the head of the bolt off and slide the expansion valve off, but I'll still have the problem of removing the bolt.

Question:
If I drilled off the head and slide the expansion valve off would the plate that the bolt goes into slide off too or is it behind piping that is flared.

Any suggestion would be most appreciated.

A photo of the valve is below.


Reply With Quote
  #2  
Old 08-03-2004, 10:05 PM
engatwork's Avatar
busy
 
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 12,423
I would drill out the head and remove the exp valve. Once the head is off and the exp valve is out you should be able to easily unscrew the stud that is left from where the head was drilled. There should not really be any tension preventing it from turning.
__________________
Jim
Reply With Quote
  #3  
Old 08-03-2004, 10:09 PM
Registered User
 
Join Date: Jun 2000
Location: Plano, TX
Posts: 2,527
Bummer of a problem! Removing a 124 expansion valve isn't too bad if you don't run into something like this.

If you drill out the stripped bolt, you will be able to remove the expansion valve. It will be a bit more trouble than usual; you'll have to move the liquid/vapor lines further out of the way than is normally required. Otherwide, no big deal.

I'm pretty sure the back plate can be removed once the expansion valve is out. It's roughly an 'H' shape, where the four legs seat behind the flares near the end of the evaporator inlet/outlet tubes. It may be a bit fiddly to get it out of there, but I think it can be done. Should be able to remove the broken bolt from the H plate with just pliers once you have it on the bench.

Good luck,

- JimY
Reply With Quote
  #4  
Old 08-03-2004, 10:40 PM
Ron in SC's Avatar
Registered User
 
Join Date: Aug 2003
Location: Charleston, SC
Posts: 1,095
Thank you both for your prompt replies.

I am obviously dismayed that I had to remove all that extra stuff to get to better access to the expansion valve, but that's the way it goes. Things don't alway go as planned.

I'll drill the head off tomorrow.
Reply With Quote
  #5  
Old 12-15-2007, 12:28 PM
Registered User
 
Join Date: Jun 2000
Location: Plano, TX
Posts: 2,527
How's this for irony? I ran across this old thread while searching for something else.

I replaced the expansion valve in my '93 124 about 2 years ago. So far that has been the only a/c repair required on this 15 year old car. One of the allen head bolts used to retain the expansion valve was stuck, and stripped. I ended up following my own advice and drilled the head off the bolt. The process was tedious but straightforward. No special tools required. Once the valve was removed there was no difficulty unscrewing the remains of the bolt.
Guess I can say BTDT now.

- JimY

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 08:30 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page