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  #41  
Old 02-01-16, 01:08
viseon viseon is offline
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Join Date: Dec 2014
Location: ALICANTE
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Hello, good to everyone. Pardon my literal translation.

I've been taking a look at this page the problem we have all in common with the depressing brake (which costs money) Here I put a very inexpensive solution that makes it last depressor brake more than the original, this is the http://www.furgovw.org/index.php?topic=179323.300 theme from page 21 begins to explain very well how to replace the rubber coming down through a checkpoint or collar (much more rigid and resistant) I I fixed it and it worked perfect. I encourage you to check it out and translate and just over 5 or 3 pounds.

Regards.
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  #42  
Old 02-01-16, 12:59
Marp Marp is offline
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Quote:
Originally Posted by viseon View Post
Hello, good to everyone. Pardon my literal translation.

I've been taking a look at this page the problem we have all in common with the depressing brake (which costs money) Here I put a very inexpensive solution that makes it last depressor brake more than the original, this is the http://www.furgovw.org/index.php?topic=179323.300 theme from page 21 begins to explain very well how to replace the rubber coming down through a checkpoint or collar (much more rigid and resistant) I I fixed it and it worked perfect. I encourage you to check it out and translate and just over 5 or 3 pounds.

Regards.
Looks interesting. Need to get a better translation than Google!
My only worry would be replacing such a vital OEM component with something non-OEM (just my initial reaction, pending the full translation...)

Muchas gracias !
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  #43  
Old 02-01-16, 13:04
Marp Marp is offline
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Following on from viseon, another piece of info from a foreign forum, this time the French T4zone:

The "how to" on their site says to undo the pump retaining bolts a few turns to slack it off, then turn the crank pulley slowly until the cam is at its furthest away from the arm (as far as can be judged). This makes reassembly easier. Then take off the pump.

FWIW...
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  #44  
Old 12-01-16, 17:19
scott180gtb's Avatar
scott180gtb scott180gtb is offline
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Just my two penneth worth.

I carried out this repair at the weekend.

I used the replacement seal in the link attached on previous posts.

What a massive difference it has made.

More brake feeling, easier smoother clutch action.

Engine now sounds beautiful and smooth.

It has even got rid of a annoying vibration noise that I thought was the gearbox layshaft.

Falling back in love with my bus again.

My advice would be to make sure you have access to a press. It just makes life so much easier and quicker when rebuilding the spring.

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  #45  
Old 12-01-16, 18:07
Van Diesels Van Diesels is offline
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Join Date: Jan 2016
Location: Kent
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Try a small washer behind the spring.... it puts I tiny bit more pressure on it and stops the knocking.
Good luck!
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  #46  
Old 19-01-16, 16:23
Marp Marp is offline
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Default Re: 2.5 Vacuum Pump stripdown and fix.

I'm replacing my vacuum pump in the next few weeks. I just wanted to clear up one query:

I have the new pump. Is there another piece that goes between the pump and the cam? I've seen an "intermediate cam follower" on the VAG website and I don't know if I have to replace that too...?

Thanks
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  #47  
Old 20-01-16, 21:56
bountybob bountybob is offline
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Has anyone tried locating the piston seal and o ring?
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  #48  
Old 08-03-16, 23:02
stew t4 stew t4 is offline
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Join Date: Apr 2011
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Can anyone describe the sound this rattle/vibration ? I have a sound which I can't put my finger on but sounds like a wheel bearing that's knackered but is still there when my bus has stopped only slower and chirps away, the sound gets louder as the bus speeds up Just trying to rule things out
Thanks stew
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  #49  
Old 08-03-16, 23:11
gunman gunman is offline
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Sounds like a ticking tappet, If you pump the brakes and deplete the vacuum it should go quiet, gets louder as the engine ticks over as vacuum builds again.
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  #50  
Old 09-03-16, 23:03
stew t4 stew t4 is offline
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Default Re: 2.5 Vacuum Pump stripdown and fix.

Thanks gunman, I don't think its that then as it's more of a chirping sound rather than ticking ! Back to the search I think !!
Cheers stew
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