I was only thinking about doing that after thoroughly flushing out the a/c system, so (assuming I did everything right) there wouldn't be anything to get into the vacuum pump to contaminate it.

I'll have to see what I can find out about the volume capacity of the MB's pump (and, for that matter, my truck's)...

Hello The Warden
Before you wreck the weak vacuum pump on your car, you can rent an A/C vacuum pump around Metro Detroit for $7.00 per day.
Check your area equipment rental.

Warden, Trust me on this... just follow WHunter's advise...
How much will it cost you to drive to Detroit ? LOL
The problem is that your ( any ) auto ac system is a closed loop.. and the lubrication is carried around the system by the refrigerant... so if you have the Truck system cleaned out for evacuation... and hook up your Benz to it... then what will be lubing the Benz compressor during that time ? And where did you put the Benz R12 while this is happening on your truck ? .. ETC....
Then, what are you going to use to evacuate the Benz in order to put the R12 back into IT ? LOL....

If you want a Tim Allen mobile air compressor then buy a used semi-tractor. Already has a compressor (a fairly small compressor) mounted to the engine and tank mounted to the frame. Then, when the neighbors complain about the size, smoke and noise, you can say you were making a little compressed air. I never understood why Norm shook his head on that TV show.

You can use your shop vac for a vacuum source. Put a tee into the hose, close to the vucuum cleaner end of the hose, and suck off the tee. It becomes your dual purpose vacuum cleaner and works no differently than the intake manifold on a car. Then find an old glass large peanut butter jar and silicone hose barbs to the lid. Put a tube (on the inside of one of the barbs) that reaches almost to the bottom of the jar. Attach the other end of that barb to your brake bleeder nipple, the other barb to the tee. Now you also have a power brake bleeder.

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daBenz - 1970 220D

Bump

Cool, Im going to try this..

Fridge compressors have oil in the bottom of them. As long as you keep them upright the oil will remain in the compressor.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

about three years on mine. so far so good, use it weekly at the least.

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1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.

A window air conditioner would seem to be an ideal choice, since it would be easy to retain the condenser.

One thing that was not mentioned, if it has freon in it it's probably got a bad compressor or it wouldn't be in the garbage. The ones to look for have no freon (leak in the evap or condenser), but the compressor still works.

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82 300SD 202K
82 300SD 233K
83 300TD 340K
82 300TD 98k euro (parts on the hoof)
85 300TD 282K
83 300TD 197K

The home-built aircraft crowd uses these as a matter of course for vacuum bagging aircraft components that are built using composite (fiberglass or carbon-epoxy) materials. It's a staple of their fabrication tool box.



Here's a link - The Cheap Little Sucker

Attached Thumbnails

 

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Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

That's a great link. It is also nice to see that CAD isn't used everywhere just look at this back of a cigarette packet classic

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!