A/C
Printed From: The Brick-yard
Category: T5 Section
Forum Name: T5 Chat
Forum Description: Forum for T5 specific chat
URL: http://www.brick-yard.co.uk/forum/forum_posts.asp?TID=93152
Printed Date: 19 Apr 24 at 15:56
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: A/C
Posted By: Onefut
Subject: A/C
Date Posted: 04 Dec 17 at 12:45
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Ok so my air con was emptied (wont go into the story) but I read online that it'll be OK like that as long as it ain't run BUT I've recently read that it could kill the pump even if not turned on. Can anyone tell me which is correct? ------------- God whispers in our soul & speaks to our heart. When we don't have time to listen, He has to throw a brick. It's our choice: Listen to the whisper or wait for the brick! 05 Shuttle SE 174 Auto LWB |
Replies:
Posted By: T5 TDI
Date Posted: 04 Dec 17 at 22:16
Hi Onefut  If it was mine I would remove the rubber coupling to suspend the A/C physically. I am absolutely not an A/C guru but because the compressor on a 2.5 is turning all the time the engine is running (unlike most other A/C systems with an electro-magnetic clutch) the oil which is normally added with the gas will not be present so the system could theoretically run without lubrication for the internal seals. I don't know if this is correct but I prefer to be on the conservative side. 😊 ------------- 2004 2.5 174 |
Posted By: Stryne
Date Posted: 05 Dec 17 at 11:12
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Yes, remove the Gates rubber coupling if there is no refrigerant charge, the compressor does have an oil sump, but the recommendation by VW is to disconnect the coupling or there is a risk of overheating the compressor. Seal any open pipes connections or other open areas. When reassembled and recharged, remember to turn the compressor a few turns by hand to lube front seal before starting up. ------------- 2005 T5 2.5L 128Kw 6SpA LWB med. roof |
Posted By: T5 TDI
Date Posted: 05 Dec 17 at 14:55
 It's fairly easy to get the compressor coupling off as long as you are reasonably handy with spanners. ------------- 2004 2.5 174 |
Stryne wrote:Posted By: Onefut
Date Posted: 11 Dec 17 at 12:51
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Cheers folks It's been like this a while so I fear I may have already buggered it i thought there was a clutch on the front?! ------------- God whispers in our soul & speaks to our heart. When we don't have time to listen, He has to throw a brick. It's our choice: Listen to the whisper or wait for the brick! 05 Shuttle SE 174 Auto LWB |
Posted By: T5 TDI
Date Posted: 11 Dec 17 at 21:10
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There is a 'shear clutch' on the front of the compressor. Since we already have a stripable rubber coupling I'm not sure what is the purpose of the shear clutch. I know that it can fail itself, perhaps after a seized freewheel goes unnoticed over time. You can easily check that the freewheel isn't seized (see my video in the modifications section) and confirm at the same time that the shear clutch actually isn't wobbling about. You might get away with it, depends on what else happened with your A/C.. ------------- 2004 2.5 174 |
Posted By: Stryne
Date Posted: 11 Dec 17 at 23:25
I tend to think that the compressor drive is actually another damping device going by its design, more protection for the engine gear train. The one on mine was wrecked only after the freewheel seized. Edit: just to add that the compressor does not have the common elect. magnetic clutch, it is controlled by an internal pressure valve and its electronic circuitry controls. That is another reason to not go poking around with 12V on the compressor wiring.
------------- 2005 T5 2.5L 128Kw 6SpA LWB med. roof |