Stick nipples

[Chris Broster - Bristol & Bath AO 372]

Right now I have your attention....

 

Just been trying to bleed brakes on my Sierra SDV 2006 Westy and the Brake Nipples both front Sierra Single pot callipers just won’t budge! 
 

I have liberally soaked them in WD40, repeatedly, bought and used the correct Brake Nut Flare Spanner’s but they just won’t loosen.

 

if I’m realistic I’d say the nuts are between the 10 and 11mm spanner’s that’s it have but then imperial don’t work either?

 

any ideas? 
 

thanks

[Chris King - Webmaster 4,704]

Mine (rear) are 10mm. 

[BenD 1,012]

52 minutes ago, Chris Broster - Bristol & Bath AO said:

Right now I have your attention....

 

Just been trying to bleed brakes on my Sierra SDV 2006 Westy and the Brake Nipples both front Sierra Single pot callipers just won’t budge! 
 

I have liberally soaked them in WD40, repeatedly, bought and used the correct Brake Nut Flare Spanner’s but they just won’t loosen.

 

if I’m realistic I’d say the nuts are between the 10 and 11mm spanner’s that’s it have but then imperial don’t work either?

 

any ideas? 
 

thanks

try warming the caliper with a blow torch just in the area of the nipple. 

[TableLeg 1,240]

Are you able to get a deep reach Hex socket on it?

[Chris Broster - Bristol & Bath AO 372]

14 hours ago, EBD Engineering said:

try warming the caliper with a blow torch just in the area of the nipple

Ah, did wonder about that? Cheers Ben

 

14 hours ago, TableLeg said:

Are you able to get a deep reach Hex socket on it?

Don't have any that size but the wonders of fleabay will assist I'm sure! Cheers

[Bigchris092 24]

Gentle heat, I'd use a 6 point/sided socket over a spanner if it's tight. 

[jeff oakley 610]

It is not an unknown problem and is usually caused by whoever bled the brakes last time simply overtightening. Most of the time a tap on the spanner will break the grip.

 

If using heat I would use a smaller blow torch direct on to the nipple. Warm it a couple of times and let it cool then warm again and gently work from side to side until it gives.

 

If it breaks in situ then they are easy enough to extract. Buy a small left hand twist drill and often they will come out whilst drilling so you do not need to use an extractor.

 

It is a pity we are locked down as if you brought it to my house I would give you a hand to do it as I have probably all the require tools.

[Chris Broster - Bristol & Bath AO 372]

On 20/04/2020 at 17:49, jeff oakley said:

It is not an unknown problem and is usually caused by whoever bled the brakes last time simply overtightening. Most of the time a tap on the spanner will break the grip.

 

If using heat I would use a smaller blow torch direct on to the nipple. Warm it a couple of times and let it cool then warm again and gently work from side to side until it gives.

 

If it breaks in situ then they are easy enough to extract. Buy a small left hand twist drill and often they will come out whilst drilling so you do not need to use an extractor.

 

It is a pity we are locked down as if you brought it to my house I would give you a hand to do it as I have probably all the require tools.

Sorry Jeff, just caught up with this. many thanks for the kind offer.  I managed to get a 11mm deep socket and with more WD40 and a brave 'tap' they both loosened enough. Project for this weekend is to pop the brakes off an clean, refurb and paint prior to refit and bleed.

 

Thanks for assistance again. See you on the other side!