Sheared brake bleed nipple

BillB · Jul 25th, 2006, 18:11

One of the rear bleed nipples has sheared on the 740 (I know, I should have been more careful but I was in a hurry at the time). I've tried an "eezy- out" but it feels like it will snap if I twist it any harder. Has anyone successfully removed a sheared nipple or is it new caliper time? Regards.

Jul 26th, 2006, 03:25

Quote:

Originally Posted by BillB

One of the rear bleed nipples has sheared on the 740 (I know, I should have been more careful but I was in a hurry at the time). I've tried an "eezy- out" but it feels like it will snap if I twist it any harder. Has anyone successfully removed a sheared nipple or is it new caliper time? Regards.

Replacement caliper......... Don't ferk with it .......... What £70/80 ..... Bite it

Perhaps a lil blue tac...... make a nipple lookin fing ........ Use a lil spray (Sliver) or baking flour & a lil oil ....... pends how honest you are really

740Estate · Jul 26th, 2006, 06:58

Depend HOW sheared it is! Have you much left of the nipple in there? You may be able to carefully drill it out and remove it (done it on an Escort) however weigh the faff around factor against time and money and see what you get. Easiouts are good however not always effective as you've found!

Cost me 20 quid for a secondhand rear caliper in working order.

turboboy · Jul 28th, 2006, 22:24

I'm sure that the replacement caliper for my 740 was less than 70-80 quid from GSF but I could be wrong.

You could try drilling out the broken part and use a tap to clean up the thread but that would depend on your skill, confidence and tools/ facilities you have.

Personally I hate the eazy-out type of remover as I have never been sucessful with one. Think of it this way - if a stud or whatever was so stuck in it's thread that using a spanner of the correct size shears the material, then what success are you going to get by trying the same procedure again but with a smaller diameter piece of material?

What I have done when stuck for a replacement caliper (with sheared bleed nipple) is to loosen the hose at the caliper, dismount the caliper and bleed it through the loose hose joint. You need to keep the joint uppermost so the air can escape. This is a messy but effective "get out of jail free" move. It can take a while but works well if you take time and check for a "firm" pedal. HTH.

migrator · Jul 28th, 2006, 23:17

The sheared bleed nipple should be hollow. Souse the remains in WD40 and then tap in an old screwdriver. This should jam into the nipple and the hammering (tapping) will help to loosen the nipple. Use mole grips on the screwdriver shaft to turn out the nipple.

kevinbis · Jul 28th, 2006, 23:28

You could try taking it to a local engineering workshop.
Maybe you can get away with giving them a drink?

Jul 29th, 2006, 12:12

Hi I've removed several broken bleed nipples. find an extractor called "Boa" think it's Boa.co.uk or com. Unlike standard extractors these are a single unit and go down to 3mm so the nipple is no problem.

Simply put the choosen one in a drill on reverse and use drill as normal hey presto the remaining bit will remove without damaging the caliper.

The units are cheaper than a machine shop doing it for you.
Charlotte

John Davies · Jul 29th, 2006, 13:48

WD 40 isn't always much good in these situations - Plus Gas (a professional fluid) is better.

Haven't had a sheared nipple since I started using it - just soak in Plus gas and wrap a bit of rag around them the day before.

Regards

John D

roadsleet · Aug 1st, 2006, 23:15

technique I always use for seized bleed nipples is gingerely warming them with a blow lamp.
barely touching the bleed nipple with the flame,and continually checking with the spanner,always worked for me.

Jul 25th, 2006, 18:11	#1
BillB VOC Member Last Online: Apr 24th, 2024 13:58 Join Date: Dec 2002 Location: Bristol	Sheared brake bleed nipple One of the rear bleed nipples has sheared on the 740 (I know, I should have been more careful but I was in a hurry at the time). I've tried an "eezy- out" but it feels like it will snap if I twist it any harder. Has anyone successfully removed a sheared nipple or is it new caliper time? Regards.

Jul 26th, 2006, 06:58	#3
740Estate Undercover 740 Last Online: Jun 2nd, 2007 12:14 Join Date: Nov 2003 Location: Cambs View Photos By: 740Estate	Depend HOW sheared it is! Have you much left of the nipple in there? You may be able to carefully drill it out and remove it (done it on an Escort) however weigh the faff around factor against time and money and see what you get. Easiouts are good however not always effective as you've found! Cost me 20 quid for a secondhand rear caliper in working order. __________________ 1991 960 3.0 24v - Project Dark ------------------------------------------------ "Ah, isn't that nice, the wife of the Cambridge president is kissing the cox of the Oxford crew." -- Harry Carpenter, BBC TV, Boat Race 1977. ------------------------------------------------ Slidin' it round past the apex of reality

Jul 28th, 2006, 23:17	#5
migrator Aye - him again Last Online: Today 15:28 Join Date: May 2001 Location: HAWICK	The sheared bleed nipple should be hollow. Souse the remains in WD40 and then tap in an old screwdriver. This should jam into the nipple and the hammering (tapping) will help to loosen the nipple. Use mole grips on the screwdriver shaft to turn out the nipple. __________________ (Ouch - that's another knuckle ...) VOC 11817

Jul 28th, 2006, 23:28	#6
kevinbis VOC Member Last Online: Feb 2nd, 2017 10:58 Join Date: Dec 2002 Location: Shoeburyness, Essex View Photos By: kevinbis	You could try taking it to a local engineering workshop. Maybe you can get away with giving them a drink? __________________ Volvo V70 T5 CD 1997 Audi TT 2003

Jul 29th, 2006, 12:12	#7
charlotte001 Guest Location:	Sheared Bleed Nipple Hi I've removed several broken bleed nipples. find an extractor called "Boa" think it's Boa.co.uk or com. Unlike standard extractors these are a single unit and go down to 3mm so the nipple is no problem. Simply put the choosen one in a drill on reverse and use drill as normal hey presto the remaining bit will remove without damaging the caliper. The units are cheaper than a machine shop doing it for you. Charlotte

Jul 28th, 2006, 22:24	#4
turboboy Master Member Last Online: Dec 15th, 2023 08:44 Join Date: Dec 2003 Location: Twickenham	I'm sure that the replacement caliper for my 740 was less than 70-80 quid from GSF but I could be wrong. You could try drilling out the broken part and use a tap to clean up the thread but that would depend on your skill, confidence and tools/ facilities you have. Personally I hate the eazy-out type of remover as I have never been sucessful with one. Think of it this way - if a stud or whatever was so stuck in it's thread that using a spanner of the correct size shears the material, then what success are you going to get by trying the same procedure again but with a smaller diameter piece of material? What I have done when stuck for a replacement caliper (with sheared bleed nipple) is to loosen the hose at the caliper, dismount the caliper and bleed it through the loose hose joint. You need to keep the joint uppermost so the air can escape. This is a messy but effective "get out of jail free" move. It can take a while but works well if you take time and check for a "firm" pedal. HTH.

Jul 29th, 2006, 13:48	#8
John Davies VOC Member Last Online: Sep 26th, 2015 22:56 Join Date: Dec 2002 Location: Walsall	WD 40 isn't always much good in these situations - Plus Gas (a professional fluid) is better. Haven't had a sheared nipple since I started using it - just soak in Plus gas and wrap a bit of rag around them the day before. Regards John D __________________ Volvo 760 GLE turbodiesel estate 1989 (auto). Ford Mondeo 2001 mk. 3 Ghia X petrol estate. Austin A60 Cambridge 1966 (auto) . Austin A60 Cambridge 1967 (manual) undergoing restoration.

Aug 1st, 2006, 23:15	#9
roadsleet toolchest Last Online: Mar 22nd, 2013 16:29 Join Date: May 2006 Location: rotherham	technique I always use for seized bleed nipples is gingerely warming them with a blow lamp. barely touching the bleed nipple with the flame,and continually checking with the spanner,always worked for me.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)