Brake servo vacuum pipe

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chewbacca
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Brake servo vacuum pipe

Post by chewbacca »

Hi all

The vac tube in the engine bay looks like this...

Image

Very old & tired, but it was functional before I removed it. The hose clip in the middle has just slipped down the hose, it's not there for any particular reason.

I'm struggling to find the bits I need to replace it with. I'm thinking the valve will be fine, but the pipe work is nasty. I'm guessing the hose on the right of this picture is just random rubber hose & anything will do, but what about the plastic pipe on the left of the valve? Also, should the plastic pipe have anything to secure it? It looks tight on the valve, but the where it pushed onto the pipe that goes to the front of the bus, it looks like it was only held on with luck. There was maybe a rubber seal looking thing, but it's pretty much disintegrated.

Any suggestions on what it should look like please & where I can get the replacement bits?

Cheers
Chewie.
B plate 1.9 petrol bus

davidoft1
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Re: Brake servo vacuum pipe

Post by davidoft1 »

Buy brake vacuum hose, it’s specially reinforced for vacuum, 12 mm I think , change both parts and reuse the valve

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Re: Brake servo vacuum pipe

Post by Mocki »

There should be a plastic hose clip to hold the pipe to the long pipe from the front 
Brickwerks apparently out of stock on the reinforced pipe and the silicone ones don’t seem to exist anymore 
 
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davidoft1
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Re: Brake servo vacuum pipe

Post by davidoft1 »

Mocki wrote: 03 Feb 2021, 23:56 There should be a plastic hose clip to hold the pipe to the long pipe from the front 
Brickwerks apparently out of stock on the reinforced pipe and the silicone ones don’t seem to exist anymore 
 

All vehicles use the same pipe, it can be bought pretty much anywhere, doesn’t have to be a Vw specialist

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Re: Brake servo vacuum pipe

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Mocki
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Re: Brake servo vacuum pipe

Post by Mocki »

davidoft1 wrote: 04 Feb 2021, 10:01
Mocki wrote: 03 Feb 2021, 23:56 There should be a plastic hose clip to hold the pipe to the long pipe from the front 
Brickwerks apparently out of stock on the reinforced pipe and the silicone ones don’t seem to exist anymore 


All vehicles use the same pipe, it can be bought pretty much anywhere, doesn’t have to be a Vw specialist

I didn’t know that , but I haven’t had any other vehicle other than a T25s since 2005.....
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Re: Brake servo vacuum pipe

Post by ZsZ »

Poliamide pipe + rubber hose
BW has both as general workshop supplies.
https://www.brickwerks.co.uk/hardware/f ... amide.html
https://www.brickwerks.co.uk/hardware/f ... -hose.html

And you may even buy new check valve
https://www.brickwerks.co.uk/one-way-va ... t3-lt.html
Zoltan
1986 Multivan ex-Caravelle. Van since 2006, running mTDi 1Z since 2008 with Fiat Croma 1.9 TDid pump 2008-2019, custom pump since 2019
5spd custom box 4.57 diff + 0.74 5th

davidoft1
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Re: Brake servo vacuum pipe

Post by davidoft1 »

ZsZ wrote: 04 Feb 2021, 12:00 Poliamide pipe + rubber hose
BW has both as general workshop supplies.
https://www.brickwerks.co.uk/hardware/f ... amide.html
https://www.brickwerks.co.uk/hardware/f ... -hose.html

And you may even buy new check valve
https://www.brickwerks.co.uk/one-way-va ... t3-lt.html


That looks like normal fuel hose, unless it’s says suitable for vacuum it’s not the correct pipe and will collapse under vacuum.
Last edited by davidoft1 on 04 Feb 2021, 14:41, edited 1 time in total.

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chewbacca
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Re: Brake servo vacuum pipe

Post by chewbacca »

Hi guys

Thanks for all the replies.

As those of you that have seen my engine thread know, I'm really not that worried about keeping it authentic!  :rollin

That ebay hose looks a win to me, engine to valve, then valve to existing tube that runs to the front. It might no look stock, but will be much better than the old junk that's on there.
I'll take a look at the sizes & particularly the tube that's already there, to see how everything can connect up.

Any problems, I'll be back to shout up with photos of the issue!

Cheers
Chewie
B plate 1.9 petrol bus

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Re: Brake servo vacuum pipe

Post by ZsZ »

davidoft1 wrote: 04 Feb 2021, 12:28
ZsZ wrote: 04 Feb 2021, 12:00 Poliamide pipe + rubber hose
BW has both as general workshop supplies.
https://www.brickwerks.co.uk/hardware/f ... amide.html
https://www.brickwerks.co.uk/hardware/f ... -hose.html

And you may even buy new check valve
https://www.brickwerks.co.uk/one-way-va ... t3-lt.html


That looks like normal fuel hose, unless it’s says suitable for vacuum it’s not the correct pipe and will collapse under vacuum.
Yes, most probably it is just a standard one.
But maybe they can get a suitable vacuum hose too.
However if the ebay hose is OK, then no worries.
:ok
Zoltan
1986 Multivan ex-Caravelle. Van since 2006, running mTDi 1Z since 2008 with Fiat Croma 1.9 TDid pump 2008-2019, custom pump since 2019
5spd custom box 4.57 diff + 0.74 5th

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DoubleOSeven
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Brake servo vacuum pipe

Post by DoubleOSeven »

1990 Transporter
1990 Golf

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chewbacca
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Re: Brake servo vacuum pipe

Post by chewbacca »

I was definitely short of that white clip. The rest was there, just showing it's age. 
B plate 1.9 petrol bus

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Re: Brake servo vacuum pipe

Post by DoubleOSeven »

The hose had the white clips too originally but there went brittle so I used spring clips instead.
1990 Transporter
1990 Golf

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chewbacca
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Re: Brake servo vacuum pipe

Post by chewbacca »

So I've found the end of the hose that runs down the bus last night & it looks alright once cleaned off. (It had got covered in underseal! lol)
I might see if the hose I've ordered is the correct size to make a good seal & just that both sides of of the valve, with good old jubilee clips all round.
B plate 1.9 petrol bus

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chewbacca
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Re: Brake servo vacuum pipe

Post by chewbacca »

Pipe has come, it's bloody thick walled!

Appears to fit fine onto the existing run down the bus, so I should be good. Shame I need a new 1 way valve, mine is does nothing when tested. Still, That's an easy fix.

Image
B plate 1.9 petrol bus

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