Any advice on Flaring tool.

bxbodger · Unread post by **bxbodger** » 02 Aug 2005, 20:24

DON'T overtighten it!!!! If the union is leaking you will probably just need a new seal, and its overtightening that kills them!!! Light hand pressure only- the seal is obtained by system pressure swelling out the rubber (see haynes), and it would be very easy to overdo it trying to stop a leak with by tightening with a mole- if its clamped on tight thats a lot of leverage......it may just get worse!!!
Someone may have been at it before and rounded off the union in a vain attempt to stop the leak by nipping it up a bit[:(!]

PeterMann · Unread post by **PeterMann** » 02 Aug 2005, 21:02

Hoke make a range of stainless Gyrolock compression fittings that are rated for 5,000+ psi. I repaired a damaged hydraulic line on my Xantia (to the rear anti-sink accumulator) several years ago. Imperial size compressed down onto the Citroen tube. Stripped the paint off the outside of the tube first. Fast, easy, lightweight, no problem since.

adzbaby · Unread post by **adzbaby** » 02 Aug 2005, 23:11

Peter,
Did you not flare the piping then? Also what part and imperial size did you use? The pipe I may need to join is 3.75mm diameter. They have a UK distributor so it could be an option?
I am aware of overtighting, the union nut looked as though it had only been 'done up' a few times and looked about 6 threads further out than the union next to it. I first completely undid the union, removed the pipe from the seal, stuck a new seal in and reseated the pipe and union, then tighted it up. As I mentioned it may have done the trick but until I get a new inlet manifold I can't start the engine and test it.

citronut · Unread post by **citronut** » 03 Aug 2005, 00:41

in that case you might find some one had cross threaded it that may be why it was not in as fare as the other one
regards malcolm