Brake Drum Bleed Nipples

Post by **Helenginger** » Sun Feb 08, 2009 9:02 am

Hi All,

I've started to rebuild the brakes on Clover, but have had serious problems in removing the brake bleeding nipples, in fact, although I've successfully removed two, with a lot of WD40 and complaining, I have totally destroyed the other two... After checking the websites of Bull Motif and ESM I can't find any spares, there are some modern spares around, but what size and thread type etc would I need! Some guidance here would be really appreciated as I don't want to fit the wrong type and either destroy the drums or have unsafe brakes!!

Thanks so much for your continuing support!

Tom

Post by **Kevin** » Sun Feb 08, 2009 9:31 am

Hi Tom thats not unusual and is normally caused by them being overtightened as they only just need nipping up as ita a taper seal.
At least you have managed to get them out and when replacing them make sure you only use the correct size ring spanner as they often get rounded off by careless handling, also remember that WD40 is not a penetrating oil you should use something like Plus Gas.
Its possible the specialists just havent got the listed just email them to ask.

Post by **grumpygrandad** » Sun Feb 08, 2009 9:43 am

hello you can use heat from blow lamp usefull tool were morris are concerened, with care ,,,grandad

Post by **Kevin** » Sun Feb 08, 2009 10:11 am

Dont know if that would work with cylinders on the car as the part you need to expand is the cylinder not the bleed nipple.

Post by **grumpygrandad** » Sun Feb 08, 2009 10:33 am

hello yes with care it will work done it several times a know it may not be the right thing to do but its worked for me thankyou ,,grandad

Post by **Kevin** » Sun Feb 08, 2009 11:03 am

If you did it on the car what happened to the rubbers.

Post by **bmcecosse** » Sun Feb 08, 2009 11:05 am

The front wheel cylinders use bleed nipples with 3/8" UNF thread, the rears have nipples with slightly coarser 3/8" BSF thread. Be sure you don't mix them up! They are readily available at autojumbles - and from the spares people - here's the front one from Bull Motif http://www.morrisminorspares.net/shop_item.php?ID=1522
Edit - And beware modern cars are all metric - typically m10x1 - which is 'almost' the same as 3/8" UNF - make very sure you don't use them !!!!!!!

Post by **simmitc** » Sun Feb 08, 2009 11:08 am

Also, depsite the name, Vehicle Wiring Products sell a complete range of brake tubes, connectors, and bleed screws.

Post by **grumpygrandad** » Sun Feb 08, 2009 11:17 am

Kevin wrote:If you did it on the car what happened to the rubbers.

well we always replace rubbers but you need a trmedus amount of heat to efect rubbers ,,grandad

Post by **Helenginger** » Sun Feb 08, 2009 5:16 pm

Guys, thanks so much for the great guidance here... Spares vendor for me tomorrow!

Ta...

PS, was wondering about the oh-so-close M10 ones!! so thanks BMC!

Post by **bmcecosse** » Sun Feb 08, 2009 9:27 pm

The M10 x1 brake threads are very dangerous on the Mini - later models have both - and owners are often mixing them up which leads to leaks/ruined fittings. I would have thought it irresponsible of the manufacturers to have such similar fittings on the car - but they did ! Minor of course has two different fittings as I described above - but they are quite different and not easily mixed up - I hope !