Servo / Non Return Valve

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Servo / Non Return Valve

Post by GTXGTXGTX » Sat Dec 07, 2019 10:24 am

Hi

I am trying to replace the non return valve on the pipe that runs from the servo to the inlet manifold. The problem is I can't get the old valve off. It doesn't unscrew. It looks like pressed or crimped in the factory? Any ideas?

Thanks



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essextom
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Re: Servo / Non Return Valve

Post by essextom » Sat Dec 07, 2019 1:20 pm

think i needed to heat mine up to remove and fit a new one.might have even chopped old one off and heated the pipe to fit the new one.



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Re: Servo / Non Return Valve

Post by GTXGTXGTX » Mon Dec 23, 2019 12:35 am

I slightly over did the heat and knackered the pipe. Can I replace the pipe with a different piece of pipe? Can I use a different type of pipe of the same diameter? Does it have to be rigid like the original?

Any advice appreciated. Thanks



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Re: Servo / Non Return Valve

Post by mark1gls » Mon Dec 30, 2019 8:15 pm

I would guess it would need to be the same sort of rigid pipe as it’s a vacuum hose to the brake servo.....?


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Re: Servo / Non Return Valve

Post by james butler » Sun Jan 05, 2020 8:20 am

you can use rubber hose but you have to put a metal spring inside it to prevent the vacuum collapsing the pipe.
THE SPRING MUST ALSO BE LARGE ENOUGH NOT TO GET SUCKED INTO THE ENGINE!!!
i had to do this on a couple of cars as the origenal moulded pipe is unobtainium.


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Re: Servo / Non Return Valve

Post by Nate » Thu Jan 09, 2020 10:37 pm

Hit the scrapyard and find something vaguely similar and make it fit. Think I used one from a mk3 or mk4 golf last time


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Re: Servo / Non Return Valve

Post by GTXGTXGTX » Sun Jan 19, 2020 4:43 pm

I bought 10mm flexible servo pipe from local auto factor.



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Re: Servo / Non Return Valve

Post by mark1gls » Sun Jan 19, 2020 9:20 pm

Is it fitted and now working?


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Re: Servo / Non Return Valve

Post by GTXGTXGTX » Sun Jan 19, 2020 11:39 pm

Yes. Appears to be ok.