Chris Broster - Bristol & Bath AO 378 Posted April 19, 2020 Share Posted April 19, 2020 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 Quote Link to post Share on other sites
Chris King 4,799 Posted April 19, 2020 Share Posted April 19, 2020 Mine (rear) are 10mm. Quote Link to post Share on other sites
BenD 1,020 Posted April 19, 2020 Share Posted April 19, 2020 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. 2 Quote Link to post Share on other sites
TableLeg 1,266 Posted April 19, 2020 Share Posted April 19, 2020 Are you able to get a deep reach Hex socket on it? 1 Quote Link to post Share on other sites
Chris Broster - Bristol & Bath AO 378 Posted April 20, 2020 Author Share Posted April 20, 2020 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 Quote Link to post Share on other sites
Bigchris092 26 Posted April 20, 2020 Share Posted April 20, 2020 Gentle heat, I'd use a 6 point/sided socket over a spanner if it's tight. 1 Quote Link to post Share on other sites
jeff oakley 617 Posted April 20, 2020 Share Posted April 20, 2020 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. 2 Quote Link to post Share on other sites
Chris Broster - Bristol & Bath AO 378 Posted May 27, 2020 Author Share Posted May 27, 2020 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! 1 Quote Link to post Share on other sites
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