sheered brake bleed nipple

[julianf]

In light of the thread on easy outs...


The other three corners were fine, but one wheel's nipple clicked off as soon as I got the socket on it.

I looked at the sheer face, and the corrosion showed it was only being held on by less than half??? Someone managed to almost wreck it last time...

The whole piston isn't big money (under a tenner for a pattern, or £30 or so for OEM) but there would be some labor involved in changing it over / time driving out to get the new part etc.

As the other nipples came open fine, I'm thinking maybe this on might (ie not rusted in) so what do you think my best plan is?

 

[Rig Pig]

You haven't got much to loose trying an easy out or welding to the broken stub.

 

[MattH]

I keep a small set of left hand drill for these types of things. Work up to the biggest size that will fit, once the drilling heats the nipple it will usually grab and wind it out.

 

[normspanners]

I do it by the weld method, of welding a nut onto it, that shrinks it away from the caliper

 

[Gareth J]

x3 for the weld, I don't even bother with a nut, just build up a blob until there's enough to grab with mole grips.

Most important is how you wind it out, work it out back and forth with some penetrating fluid, much like you would tapping a hole. Putting too much torque on will shear the thing again.

 

[brading]

4x weld. Weld a flat washer on first then build up and weld on a nut

 

[gordon stephenson]

First I would open the hole a little. then grind a good quality Allen key to a square on the end with across the flats just bigger than the hole dia, hammer it into the hole so that it "broaches" a square hole, Along with penetrating fluid and the shocks from the hammer blows I find they will usually screw out with this modified Allen key., Never ever known easy-outs to work at all, and Iv been doing this sort of thing since Adam was a lad,

 

[CompoSimmonite]

I had a Renault Savanna on which the front bleed nipples came out easy. Then found the thread had stripped in the calliper and previous owner has simply Araldited them in place

 

[gordon stephenson]

The Advantage of grinding an Allen key etc is that you can get nice sharp square corners to aid with the grip

 

[Tinbasherdan]

Use a small file shank, tap it in and wind it out

 

[normspanners]

previous owner has simply Araldited them in place

worked didnt it?, cant knock him, ---------well I suppose you could have,-------- knocked him out, had it popped on you

 

[AndyStobbs]

The brake fluid will flash if you heat it any great amount. Its best to empty the caliper / what ever it is out.

 

[rikrobson]

they are usually m10 fine 1mm pitch the same as a sparkplug.

carefully drill it out then tap out the remainder.

 

[normspanners]

The brake fluid will flash if you heat it any great amount. Its best to empty the caliper / what ever it is out.

HE HE ----used to be common occurrence in Belgium after nearly every stage, bleeding the brakes and it spontaneously bursting into flames on the red hot discs coz it was just like steam coming out, and have flames licking round your ears, you could not stop though,one thing was no time, belgium rallies are runVERY tight on time, secondly just keep pumping the fresh fluid through it cools the calipers and rubbers, to save cooking them.

 

[normspanners]

they are usually m10 fine 1mm pitch the same as a sparkplug.

the ones that shear, are usually 7 or 8mm

 

[rikrobson]

I had one go on a puma m10x1.0 thread on it
They are so soft. Tried an easy out and that snapped. Had to drill round the snapped tip then clear the rest drilling centrally.
Then tapped out the remainder. The thread isn't the whole length don't forget and don't damage the seat at the bottom. That seals the nipple

 

[p0689109]

If it is not leaking then leave it in and just crack the brake pipe union to bleed it.