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Re: [GMCnet] A/C vacuum pump [message #326242 is a reply to message #326240]

Wed, 22 November 2017 07:14

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma:

Senior Member

Rick,

Thanks!

Glad you took the time to clarify what I was saying.

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Richard Denney
Sent: Tuesday, November 21, 2017 11:24 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] A/C vacuum pump

Let's be sure to keep things straight, as Rob is doing. The electric pump
in the original post will draw down to 75 microns, which is 29.917 inches
of mercury at sea level. I call that a hard vacuum. It won't survive a
shop's duty cycle, perhaps, but it will work for us if we let it run long
enough. I'll bet shops don't pull a harder vacuum, tough a shop-grade pump
might get there faster.

The air-pressure-operated venturi pump that Tyler posted is the one Matt
(and Rob) warned against. It does not pull a hard enough vacuum to dry an
AC system.

Rick "who got confused" Denney

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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[Message index]

		[GMCnet] A/C vacuum pump By: Kingsley Coach on Mon, 20 November 2017 20:31
		Re: [GMCnet] A/C vacuum pump By: Ken Henderson on Mon, 20 November 2017 21:50
		Re: [GMCnet] A/C vacuum pump By: midlf on Tue, 21 November 2017 01:37
		Re: [GMCnet] A/C vacuum pump By: USAussie on Tue, 21 November 2017 05:48
		Re: [GMCnet] A/C vacuum pump By: Keith V on Tue, 21 November 2017 09:02
		Re: [GMCnet] A/C vacuum pump By: Ken Henderson on Tue, 21 November 2017 09:43
		Re: [GMCnet] A/C vacuum pump By: Keith V on Tue, 21 November 2017 10:38
		Re: [GMCnet] A/C vacuum pump By: James Hupy on Tue, 21 November 2017 10:50
		Re: [GMCnet] A/C vacuum pump By: James Hupy on Tue, 21 November 2017 11:04
		Re: [GMCnet] A/C vacuum pump By: Keith V on Tue, 21 November 2017 11:07
		Re: [GMCnet] A/C vacuum pump By: emerystora on Tue, 21 November 2017 11:26
		Re: [GMCnet] A/C vacuum pump By: Richard Denney on Tue, 21 November 2017 15:04
		Re: [GMCnet] A/C vacuum pump By: Kingsley Coach on Tue, 21 November 2017 18:01
		Re: [GMCnet] A/C vacuum pump By: Ken Burton on Tue, 21 November 2017 01:48
		Re: [GMCnet] A/C vacuum pump By: Larry on Tue, 21 November 2017 10:16
		Re: [GMCnet] A/C vacuum pump By: Kingsley Coach on Tue, 21 November 2017 11:00
		Re: [GMCnet] A/C vacuum pump By: roy1 on Tue, 21 November 2017 10:48
		Re: [GMCnet] A/C vacuum pump By: Tilerpep on Tue, 21 November 2017 11:35
		Re: [GMCnet] A/C vacuum pump By: Kingsley Coach on Tue, 21 November 2017 13:22
		Re: [GMCnet] A/C vacuum pump By: Dave Stragand on Tue, 21 November 2017 14:36
		Re: [GMCnet] A/C vacuum pump By: tphipps on Tue, 21 November 2017 14:59
		Re: [GMCnet] A/C vacuum pump By: Matt Colie on Tue, 21 November 2017 18:09
		Re: [GMCnet] A/C vacuum pump By: USAussie on Tue, 21 November 2017 19:18
		Re: [GMCnet] A/C vacuum pump By: Richard Denney on Tue, 21 November 2017 23:24
		Re: [GMCnet] A/C vacuum pump By: USAussie on Wed, 22 November 2017 07:14
		Re: [GMCnet] A/C vacuum pump By: k2gkk on Wed, 22 November 2017 07:23
		Re: [GMCnet] A/C vacuum pump By: USAussie on Wed, 22 November 2017 07:29
		Re: [GMCnet] A/C vacuum pump By: jhbridges on Wed, 22 November 2017 10:24

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