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Hi, can someone please tell me the size of the brake pipe union that screws into rear brake cylinder .
Just had a nightmare afternoon, ordered a brake pipe online looked good, removed old pipe from car.
screwed one end of new pipe into place carefully routed pipe in place only to find the pipe end union was smaller than required at wheel cylinder. Had to remount old brake pipe + bleed the brakes so I can use the car .
Any way Ive decided to buy a tool and make my own in future .
So would be appreciated of all pipe thread + size info used on my 2004 1.4 berlingo. Rear drum brake + ABS .
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The cheap pipe flaring kits are just that - it is not easy to get a really good end shape and you'd have to use copper pipe, which means buying a reel.
I have a kit and pipe that I've used a few times, but I'd suggest getting the right ones ordered in at your motor factors - they'll have new unions, rather than you using your old ones, probably be of coated steel . A small 'local' garage might have a professional tool and if you take your old pipes they'll swap the fittings over and make the pipe up.
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Kunifer pipe is the best aftermarket alternative and it's not expensive. It's a lot easier to work than steel pipe and more durable than copper. Just go into your local spares shop for unions they are probably M10x1 and cheap enough.
So where does this bit go then ?
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As far as I could measure, the cylinder pipe union is 12mm and the other side is 10m. Hope this helps.
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Thanks everyone for the advise on this subject I think the union is 12mm . During the remounting of the original brake pipe I gave it a good clean with scotch-brite . The union/pipe has sealed up good so I think it does not need replacing anyway . The car has failed its EU Kontrol (Equivlent to MOT ) with a leak between the brake pipe and cylinder .
I had recently disturbed the wheel cylinder whilst struggling with brake shoe springs so it was probaly a little bit of brake fluid not cleaned off properly rather than leaking I believe .
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