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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-11-2003, 02:24 PM
Registered User
 
Join Date: Oct 2002
Location: Texas
Posts: 303
134a A/c Gauges

JUST purchased a set of 134A a/c gauges from local parts store. there is a blue and red for high and vacuum side. But there is also a yellow one ???? Now basing on the fitting, there is a valve that automatically shuts when not connected, so I'm assuming that that's where the refrigerant bottle goes. Any thoughts?
__________________
a2


1978 280 CE silver
1986 560 SL black
1987 300 SDL cream
1994 SL 500 brilliant green
1997 E 300d dessert silver
2005 FORD F250 Superduty Crew cab 4x4

____ADMU____
Reply With Quote
  #2  
Old 03-11-2003, 02:53 PM
jbaj007's Avatar
Registered User
 
Join Date: Jun 2001
Location: Santa Monica, CA
Posts: 2,053
You are correct. Might want to peruse some of the info at this site:http://www.aircondition.com/wwwboard/
__________________
The Golden Rule

1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)
Reply With Quote
  #3  
Old 03-11-2003, 02:56 PM
Registered User
 
Join Date: Oct 2002
Location: Texas
Posts: 303
Smile

THANKS...I'LL DO THAT
__________________
a2


1978 280 CE silver
1986 560 SL black
1987 300 SDL cream
1994 SL 500 brilliant green
1997 E 300d dessert silver
2005 FORD F250 Superduty Crew cab 4x4

____ADMU____
Reply With Quote
  #4  
Old 03-12-2003, 06:30 AM
LarryBible
Guest
 
Posts: n/a
jbaj007 offers very sound advice. It is very important that you study and know full well what you are doing. If you try to charge through the high side, you can blow up a refrigerant can in your face.

There are several really good manuals available through aircondition.com. There is also a link there to ackits.com. They have an excellent manual, I think from master cool.

Study up, be safe and enjoy fixing it yourself.

Good luck,
Reply With Quote
  #5  
Old 03-13-2003, 03:59 PM
Registered User
 
Join Date: Oct 2002
Location: Texas
Posts: 303
Thumbs up

Read alot about gauges and how to use them....
Ambient temp: 74
(remember I haven't done this before)

Attached the connectors with the quick connect system( idiot proof way of connecting the right hose to the right area)
Both pressures are down: low:10 HIgh :80
Upon starting the car, the pressures went up to Low:20 HIgh: 100
With that, I attached the 134A bottle and punctured it. Started to open the low side then suddenly the gauges came alive!!!!

After one 8oz can, the gauges read: low: 30 high: 225 , the fans cycled as the pressure goes up to 250 on the high. cold, not cool air blows out the vents--- GREAT! After I turned the engine off, I went around, below, inside the car with DETEK sniffer set on high sesitivity.....nothing........
be happy or be worried? Any thoughts?
__________________
a2


1978 280 CE silver
1986 560 SL black
1987 300 SDL cream
1994 SL 500 brilliant green
1997 E 300d dessert silver
2005 FORD F250 Superduty Crew cab 4x4

____ADMU____
Reply With Quote
  #6  
Old 03-13-2003, 04:23 PM
I told you so!
 
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,791
I'd still be worried. How did you lose the refrigerant in the first place?

You used a sniffer and didn't find anything. Are any of the connections wet with refrigerant oil on the outside? I guess time will tell you if you have a leak.
__________________
95 E320 Cabriolet, 140K
Reply With Quote
  #7  
Old 03-13-2003, 05:16 PM
Registered User
 
Join Date: Oct 2002
Location: Texas
Posts: 303
You are correct on that... everything was dry as a bone. I do need to crawl under the thing and look at the underside of the compressor. It's a 1994 sl500 with barely 40k miles so maybe some of the refrigerant found it's way out somewhere....need to investigate more....thanks

a2
__________________
a2


1978 280 CE silver
1986 560 SL black
1987 300 SDL cream
1994 SL 500 brilliant green
1997 E 300d dessert silver
2005 FORD F250 Superduty Crew cab 4x4

____ADMU____
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 10:48 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page