Search found 25 matches

by Dave in Texas
Wed Jun 22, 2016 7:24 am
Forum: Off Topic Chat
Topic: Snap-On R12 gauge set
Replies: 1
Views: 22072

Snap-On R12 gauge set

Replaced gaskets/seals in depressor end of my hose set and decided to replace schrader valves in manifold set. One in center port, no problem. Low side port end has what looked to be a schrader valve. When I removed it, surprise. The visable part looks like the end of a valve, but the inside does no...
by Dave in Texas
Wed Jun 22, 2016 7:07 am
Forum: Automotive Air Conditioning Forum
Topic: Vacuum for leak testing
Replies: 20
Views: 32593

Re: Vacuum for leak testing

Since last post I've been comparing prices. Amz w/20CF tank(empty) delivered is $85. Smith 30 series regulator $84 delivered. Cost to fill tank locally $10 but they only exchange. That is assumming Amz tank is recently certified. Amz did have less expensive regulator (Uni-Weld) brand but poor review...
by Dave in Texas
Tue Jun 21, 2016 8:17 am
Forum: Automotive Air Conditioning Forum
Topic: Converting to R134
Replies: 6
Views: 10583

Re: Converting to R134

If you're dealing with an incompetent shop, that's a different problem; find another shop. You shouldn't have any problem getting the few pounds of R-12 you need for $100 or so if you ask around some. There are thousands of R-12 systems still out there that leak a little into the atmosphere all the...
by Dave in Texas
Sun Jun 19, 2016 9:01 am
Forum: Automotive Air Conditioning Forum
Topic: Converting to R134
Replies: 6
Views: 10583

Re: Converting to R134

30lb cylinder R12 = $1000, 12-15oz can = $35+ 3½lbs = $100-$150. Need new R12 gauge set too.....=$60 for a decent one. The refrigerant isn't going to get less expensive at time goes on and parts are getting, not only expensive, but hard to find anymore. Even AC shops have to dig out the old R 12 equ...
by Dave in Texas
Sat Jun 18, 2016 7:18 am
Forum: Automotive Air Conditioning Forum
Topic: Converting to R134
Replies: 6
Views: 10583

Converting to R134

I converted my car to 134 in '98 and it has done fine. I've wanted to keep my truck in R12 but....common sense has overcome me! I intend to convert it to 134 also. New compressor, condenser, evaporator, and accumulator units are sitting in my garage right now. I'll need adapters I know that, but mai...
by Dave in Texas
Wed Jun 15, 2016 3:28 pm
Forum: Automotive Air Conditioning Forum
Topic: Vacuum for leak testing
Replies: 20
Views: 32593

Re: Vacuum for leak testing

Makes sense. Vacuum pulls in, while pressure pushes out. Maybe a tiny crack in a line would be re-mated under vacuum and pressure would reveal it? Nitrogen readily available for the DIY'er and what is needed to introduce it into car system? Costly? Learning stuff..... I got my 40CF nitrogen/tank at...
by Dave in Texas
Wed Jun 15, 2016 7:59 am
Forum: Automotive Air Conditioning Forum
Topic: Vacuum for leak testing
Replies: 20
Views: 32593

Re: Vacuum for leak testing

Makes sense. Vacuum pulls in, while pressure pushes out. Maybe a tiny crack in a line would be re-mated under vacuum and pressure would reveal it?
Nitrogen readily available for the DIY'er and what is needed to introduce it into car system? Costly? Learning stuff.....
by Dave in Texas
Tue Jun 14, 2016 6:10 pm
Forum: Automotive Air Conditioning Forum
Topic: Small leak
Replies: 8
Views: 12512

Re: Small leak

OK, I understand. I believe I will retire the 30yr old SnapOn set and purchase a new R12 manifold set. Less hassle. Thanks for the response. Just to have on-hand and because parts are getting hard to find, I have a condenser, evaporator, accumulator and new compressor on the way. None are inexpensiv...
by Dave in Texas
Tue Jun 14, 2016 4:25 pm
Forum: Automotive Air Conditioning Forum
Topic: Small leak
Replies: 8
Views: 12512

Re: Small leak

No, not the system. As I said: I am trying to verify the old gauge set with the procedure I thought was the right one to verify the set was not leaking.
by Dave in Texas
Tue Jun 14, 2016 11:20 am
Forum: Automotive Air Conditioning Forum
Topic: Small leak
Replies: 8
Views: 12512

Re: Small leak

Thanks. I know better than to use sealer. I'm unsure of the Snap-On gauge set I use. It may be the issue and to verify the set I used the following procedure. Attached the center service line (Yellow) to my vacuum pump. Closed the valves on the manifold set. Pump On. Nothing happened. Attached the L...