Can I get by with a HF vacuum pump for my A/C - Page 2 - PeachParts Mercedes-Benz Forum

300SD81 · #16 04-06-2007, 02:03 AM

Quote:

Originally Posted by ForcedInduction

Um, come again? You block off the entire intake and crank on the engine?

That will pull the oil seal out of the turbo.

Not the car's air intake, the air compressor'...

(yes, thats my POS, 3/4hp compressor, but it was free... old owner gave it away because the pipe fittings were loose! lucky deal)

JimmyL · #17 04-06-2007, 02:10 AM

If you are in Atlanta, can't you go to an Autozone and utilize the "Tool Loner Program"? I just took back the vac pump and AC guages earlier today.
You just put them on your credit card, and when you return them the fees are reversed. This is the second summer I've used this, and it is GREAT!

Oh, and btw, it is super easy to flush the system. Get you a cheap flush gun, and all you do is take every connection apart, flush the lines, and put everything back with new rubber seals and Nylog. I flush with straight alcohol, and used about a gallon or so. It cleans good enough and dries quickly.
I'll try and find a link to a cheapo flush gun and edit this.......

**edit**
This is the flush gun I got, and this is also the seller. Was a good transaction......

http://cgi.ebay.com/ebaymotors/Robinair-Automotive-Flush-Gun-Kit-R12-R134A_W0QQitemZ120104516204QQihZ002QQcategoryZ63700QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Also, not a bad deal. I think the HitMan got one of these. Don't know if he's used it yet....

http://cgi.ebay.com/ebaymotors/FJC-Automotive-2-5-CFM-Vacuum-Pump-R12-R134a_W0QQitemZ120104455872QQihZ002QQcategoryZ43989QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

300SD81 · #18 04-06-2007, 02:12 AM

Quote:

Originally Posted by JimmyL

If you are in Atlanta, can't you go to an Autozone and utilize the "Tool Loner Program"? I just took back the vac pump and AC guages earlier today.
You just put them on your credit card, and when you return them the fees are reversed. This is the second summer I've used this, and it is GREAT!

They have a vac pump + gauges!? I use the tool program all the time, but thats not listed on the paper I got...

JimmyL · #19 04-06-2007, 02:16 AM

Quote:

Originally Posted by 300SD81

They have a vac pump + gauges!? I use the tool program all the time, but thats not listed on the paper I got...

Maybe not all stores offer the same things. There are 3 within a 5-8 mile radius of me, and 2 of them have all the stuff, while the smaller store doesn't carry quite as many loner options......
The vac pump I used this last time was brand new, still sealed in the box. I had to remove all packing and tie wraps, add the oil, and off I went.

300SD81 · #20 04-06-2007, 02:19 AM

Quote:

Originally Posted by JimmyL

Maybe not all stores offer the same things. There are 3 within a 5-8 mile radius of me, and 2 of them have all the stuff, while the smaller store doesn't carry quite as many loner options......

I'll go check that out... My compressors survived 20 mins of being a vac pump, so I'm pretty sure I can use it.. A real set of gauges would be nice though, instead of my rigged up connections using the HF pump's R134a connector unscrewed and a bunch of NPT fittings and hose barbs attached... But I'm going with Enviro-Safe for my refrigerant, so I'm not so sure autozone would like me contaminating their stuff..

JimmyL · #21 04-06-2007, 02:23 AM

FYI, I could only get R-134A guages from Autozone. I had to borrow a church buddy's old R-12 guages......
I got A.Z.'s guages to check the pressures on the wagon (Freeze-12 with R-134A fittings

), but didn't want to loose the freon that it would take to fill the guage hoses. It is working OK for now, just 5-8 degrees warmer than the 240 with R-12....

300SD81 · #22 04-06-2007, 02:26 AM

Quote:

Originally Posted by JimmyL

FYI, I could only get R-134A guages from Autozone. I had to borrow a church buddy's old R-12 guages......
I got A.Z.'s guages to check the pressures on the wagon (Freeze-12 with R-134A fittings

), but didn't want to loose the freon that it would take to fill the guage hoses. It is working OK for now, just 5-8 degrees warmer than the 240 with R-12....

I'll probably stick with my 8in hose and can tap then, I barely bought enough ref to fill my system... (17oz, need 16) And I figure I'll end up with almost exactly 16 after whats still left in the cans..

300SD81 · #23 04-06-2007, 09:02 PM

Using my compressor as vacuum pump right now, and my modified mityvac as a gauge.. Seems to be working nicely,