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#1
07-02-2016, 10:11 AM
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Getting in to A/C, trying to figure out what to buy...
I am an A/C newbie, and dont know everything that i need. So i am planning on buying a 2.5cfm vacuum pump, and a A/C gauge set. i am thinking of getting this r12 set and a set of r134a quick adapters if i want to work on my wife's Ford Expedition.
What else will i need? my 240d's situation is that the air is not cold, and i don't know the state of the compressor. i wanted to go the sanden route, but i cant commit as much money as w was hoping. i am thinking of trying to see if my current system works if i flush and recharge. Electric Vacuum Pump - 2.5 CFM https://www.amazon.com/Pit-Bull-CHIMG777-Conditioning-Manifold-Gauge/dp/B000VAQQ3Y https://www.amazon.com/gp/aw/d/B000JFHNEC/ref=pd_aw_sim_469_1?ie=UTF8&dpID=41z-UTkJ0tL&dpSrc=sims&preST=_AC_UL100_SR100%2C67_&psc=1&refRID=YWVWTFKX5HZQMCJ32GR7
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 Grey '91 350SDL 214k Dad's car Beige '81 240D 4 Speed 254k SOLD Blue '82 300D 225k SOLD White '95 E300D 46k SOLD Blue '87 190D 2.5 Turbo 315k SOLD Brown '80 240D 4 Speed 716k SOLD Beige '80 300D N/A 119k SOLD Blue '85 300D Model 186k T-Boned Last edited by arcticathlon; 07-02-2016 at 10:25 AM. 
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#2
07-02-2016, 10:22 AM
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I suggest that you be sure to get a TWO STAGE vacuum pump... that one is one stage... HF does put its 2stage on sale...that is when I got mine....
and recommend reading the AC thread listed in my signature...
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#3
07-02-2016, 10:44 AM
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This is a decent starter set.
Bottom-line pricing on FJC KIT6 at ToolTopia.com It isn't two stage but it does have the additional fitting which allows you to pull vacuum from both ports at the same time. It's not as fast as the true two-stager but it gets the job done. You will need adapters for the existing R12 fittings. It has a much higher quality set of gauges with real seals, not the hard plastic pieces of crap HF uses. If you decide to use the HF manifold, the FIRST thing you need to do is to replace ALL the seals on the manifold.
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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now Last edited by Mike D; 07-02-2016 at 10:55 AM.
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#4
07-02-2016, 10:53 AM
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Quote:
Saw the thread last night, and started reading it. have not been able to get very far because of kids. this weekend has a lot of sales going on, and i was looking to buy stuff cheaper. that is why i am trying to see all i need.
__________________
Grey '91 350SDL 214k Dad's car Beige '81 240D 4 Speed 254k SOLD Blue '82 300D 225k SOLD White '95 E300D 46k SOLD Blue '87 190D 2.5 Turbo 315k SOLD Brown '80 240D 4 Speed 716k SOLD Beige '80 300D N/A 119k SOLD Blue '85 300D Model 186k T-Boned
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#5
07-02-2016, 11:01 AM
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Quote:
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now
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#6
07-02-2016, 11:21 AM
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If you are going to use the tool every day as a professional then buy the best one you can afford. if you are doing it once or twice or year then a cheap VP is good enough. You don't need the best vacuum for A/C to work. I used to use the Venturi VP ( $12 ) pump with a compressor to do A/C work at home. never failed. I would recommend to replace the rec/driver every time you open up the system.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.  W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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#7
07-02-2016, 11:25 AM
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You guys know I researched this before I bought a vacuum pump....
buy the CHEAPEST TWO STAGE pump you can afford.... some people on here think the world is full of conspiracies... and do not consult physics manuals to make their decisions.. and worse yet their Recommendations to OTHERS.....
__________________
1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#8
07-02-2016, 11:43 AM
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Quote:
__________________
Grey '91 350SDL 214k Dad's car Beige '81 240D 4 Speed 254k SOLD Blue '82 300D 225k SOLD White '95 E300D 46k SOLD Blue '87 190D 2.5 Turbo 315k SOLD Brown '80 240D 4 Speed 716k SOLD Beige '80 300D N/A 119k SOLD Blue '85 300D Model 186k T-Boned
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#9
07-02-2016, 11:45 AM
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Post removed due to lack of relevance.
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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now Last edited by Mike D; 07-02-2016 at 12:12 PM.
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#10
07-02-2016, 11:49 AM
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Quote:
__________________
Grey '91 350SDL 214k Dad's car Beige '81 240D 4 Speed 254k SOLD Blue '82 300D 225k SOLD White '95 E300D 46k SOLD Blue '87 190D 2.5 Turbo 315k SOLD Brown '80 240D 4 Speed 716k SOLD Beige '80 300D N/A 119k SOLD Blue '85 300D Model 186k T-Boned
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#11
07-02-2016, 11:54 AM
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Quote:
It is not you that I am referring to... that tool kit you recommend IS two stage... thumbs up... This part of his statement " cheap VP is good enough. You don't need the best vacuum for A/C to work. I used to use the Venturi VP ( $12 ) pump with a compressor to do A/C work at home. never failed. " NO ONE who knows about the physics of taking the moisture out of and AC system agrees that a ' cheap' VENTURI VP ( OR EVEN AN Expensive one ) will pull enough vacuum to be effective....
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#12
07-02-2016, 12:00 PM
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The Venturi VP is not ideal but it works. You can do it in stages, I did. The bottom line is that you don't need perfect vacuum for A/C to work. Some shade tree mechanic charges the system without pulling any vacuum, just release the air from the high side port. It still works. Just buy something reasonable you can afford and is up to spec because most DIY only uses it very rarely. It is not you are fixing your A/C every month.
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed. W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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#13
07-02-2016, 12:08 PM
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Quote:
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed. W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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#14
07-02-2016, 12:15 PM
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Quote:
the Venturi type of pump does NOT WORK WELL ENOUGH to properly evacuate an AC unit... it can make a vacuum for less ' needy ' uses.... but drawing enough vacuum to BOIL out the moisture is in a different category than that...
__________________
1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#15
07-02-2016, 12:30 PM
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Quote:
"does NOT WORK WELL ENOUGH" = WORK "to BOIL out the moisture" = receiver/drier does the job It is not a perfect world. A/C is not rocket science, please do not convince others that it is. Please don't elevate yourself either.
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed. W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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