Japmodelkits.co.uk Posted April 4, 2013 Report Share Posted April 4, 2013 Hi guys I have a rounded bolt on one of my rear Calipers, it's the bottom one of the two back bolts that remove the caplier It's so rounded I the socket just spins and I made it worse using a long breaker bar So what's the best way to remove it and how? Thanks Link to comment Share on other sites More sharing options...
keef-b Posted April 4, 2013 Report Share Posted April 4, 2013 size smaller socket (not a hex) hammered on, after copious amounts of wd40 sprayed onto the offending bolt???? Link to comment Share on other sites More sharing options...
Adex Posted April 4, 2013 Report Share Posted April 4, 2013 Well the good news is that the bottom one is easier to get to than the top one... Your options are to either grind &/or drill the head of the bolt then replace it, or depending on what tools (for grinding/drilling) you have, you might have better luck with one of these. I'd be very wary of hammering sockets onto hub/brake components as they crack a lot easier than you'd think (if you even have enough room to swing a hammer, that is). Link to comment Share on other sites More sharing options...
Adam_L Posted April 4, 2013 Report Share Posted April 4, 2013 Depends how badly it's rounded. I had exactly the same issue on the same bolt last week and managed to spin it right off with some of these a mate had http://m.screwfix.com/p/irwin-5-piece-bolt-grip-nut-remover-set/96028 Just removed the bolt for the top arm so I could get my big torque wrench between the shock and bolt. Link to comment Share on other sites More sharing options...
Adex Posted April 4, 2013 Report Share Posted April 4, 2013 Just removed the bolt for the top arm so I could get my big torque wrench between the shock and bolt. You shouldn't use a torque wrench for undoing nuts/bolts. It's a precision instrument, not a fancy breaker bar. Link to comment Share on other sites More sharing options...
Adam_L Posted April 5, 2013 Report Share Posted April 5, 2013 (edited) You shouldn't use a torque wrench for undoing nuts/bolts. It's a precision instrument, not a fancy breaker bar. My one is seized after me stupidly working in the rain, so now it is a fancy breaker bar lol. I use my smaller one for precision stuff Also just noticed the Screwfix link didn't work http://www.amazon.co.uk/dp/B0000CCXVZ/?tag=hydra0b-21&hvadid=9550952229&ref=asc_df_B0000CCXVZ Edited April 5, 2013 by adlev27 Link to comment Share on other sites More sharing options...
Ant Baker Posted April 5, 2013 Report Share Posted April 5, 2013 i am assuming that you rounded it by using a multi-hex socket so my first try would be try a 6 sided socket on the bolt...you may be surprised...if not then next step is what Adex recommended Link to comment Share on other sites More sharing options...
trophytr5 Posted April 6, 2013 Report Share Posted April 6, 2013 Is a bolt or a set screw? Bolts have nuts on the other side so if you remove the head it should drop out. If it's a set, then it's screwed into the caliper and removing the head will not get you anywhere. Try, if you can get at it, filing new flats on the bolt, assuming it's mild steel. and using a smaller spanner Link to comment Share on other sites More sharing options...
Japmodelkits.co.uk Posted April 6, 2013 Author Report Share Posted April 6, 2013 Its was a 12 point socket, I have no 6 point ones are they much better for not slipping Just paid £60 for a halfords one, wish I had seen the teng 6 point set now Its a set screw not a bolt I have ordered one of the sets from the link so that might work Link to comment Share on other sites More sharing options...
Ghoulie Posted April 6, 2013 Report Share Posted April 6, 2013 i am assuming that you rounded it by using a multi-hex socket so my first try would be try a 6 sided socket on the bolt...you may be surprised...if not then next step is what Adex recommended This. ^^^ I got a set of 6 sided hex fits for the exact same reason, and never had this problem since. Link to comment Share on other sites More sharing options...
trophytr5 Posted April 6, 2013 Report Share Posted April 6, 2013 And don't forget, plenty of WD40/PlusGas and, if you can, heat. The caliper will probably expand more than the bolt, loosening it's grip. Link to comment Share on other sites More sharing options...
Ant Baker Posted April 6, 2013 Report Share Posted April 6, 2013 Its was a 12 point socket, I have no 6 point ones are they much better for not slipping Just paid £60 for a halfords one, wish I had seen the teng 6 point set now Its a set screw not a bolt I have ordered one of the sets from the link so that might work Yeah unless the head of the bolt is nearly all rust then a CORRECT SIZE 6 point socket will nearly always work as the surface area connecting the socket and the head is far greater as apposed to relying on just the corners of a head which can easily be rounded off even on new bolts haha I would definitely reccomend a set if you are working on an old car haha Link to comment Share on other sites More sharing options...
Recommended Posts