Montreal R12 recharging mystery/ignorance - Alfa Romeo Bulletin Board & Forums
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 08-08-2019, 10:54 AM Thread Starter
Registered User
Join Date: Sep 2014
Posts: 10
Montreal R12 recharging mystery/ignorance

I need to recharge my Montreal with R12 (not interested in converting and have the refrigerant) but am stumped by my system's apparent lack of a high-side manifold port. It's an expansion valve type system so I expected to find a service valve with port on the high side of the compressor, and in fact the AC parts books describes part as a service valve, but the corresponding part on my car, and the drawing in the parts book, shows no service port nor is there the expected three-position service valve (see attached pics). The part that is there has a 1" female port to the compressor, a 3/4" flare port for the hose, and a 7/16 flare port for the high-to-low side bypass tube, but not service port nor a valve stem.

Even so, the Air Conditioning System manual shows and discusses the use of a traditional stem-type service valve. So this leads me to a bunch of questions but the most immediate and basic one is:

Have any of you Montreal owners (or 2000 or Alfetta owners with corresponding AC systems) recharged your AC systems? If so, where did you connect the high side of your manifold?

Attached Images
File Type: pdf compressor.pdf (5.64 MB, 6 views)
File Type: pdf High Side Fitting.pdf (5.06 MB, 5 views)
awatkins is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Alfa Romeo Bulletin Board & Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome