Guest wunntenn Posted September 16, 2012 Share Posted September 16, 2012 Changing suspension bushes and have the 2 big 30mm nuts stuck tight on the trailing arms on the outriggers,. Very long breaker bar and my reasonable weight and muscle will not budge it. One of the nuts has started to get the corners a bit rounded so its going to be an even bigger pig now. What are my options? Whack a smaller socket onto it and get that stuck too? Are there 30mm mechanical nut splitters available? (I cant find any online). Carefully attack with the grinder and a chisel? Quote Link to comment Share on other sites More sharing options...
landroversforever Posted September 16, 2012 Share Posted September 16, 2012 Have you a friendly garage nearby or a friend with a big windy gun? crack it off for you Quote Link to comment Share on other sites More sharing options...
Guest wunntenn Posted September 16, 2012 Share Posted September 16, 2012 Might need to try that. Do windy guns really generate that much more turnystuff than big blokes on long bars and gravity? Quote Link to comment Share on other sites More sharing options...
TSD Posted September 16, 2012 Share Posted September 16, 2012 Clean any thread you can get to with a wire brush, to make life easier once you cracked it off. Good quality 6 sided socket, lots of penetrating oil, stick the trolley jack under the end of the cheater bar, leave overnight? (This is harder to do on one side of the truck of course.) I did once burst a Halfords 30mm socket this way, but replacing it with a quality item solved the problem. If it really won't budge, then heat can work wonders, or carefully drill several holes in the centre of one flat, and burst it with a chisel? Quote Link to comment Share on other sites More sharing options...
duncmc Posted September 17, 2012 Share Posted September 17, 2012 I also undo these big nuts using a socket, T bar or breaker bar and a trolley jack on the end. Has always worked for me. Quote Link to comment Share on other sites More sharing options...
zim Posted September 17, 2012 Share Posted September 17, 2012 You either need a bigger bar, bigger guys or both. G Quote Link to comment Share on other sites More sharing options...
Guest wunntenn Posted September 17, 2012 Share Posted September 17, 2012 Thanks! In order of cost then it seems - big lads, trolley jack, blowtorch! As a last resort, if I grind it down a bit would sticking a nut splitter on it do the trick - cant find a 30mm splitter but maybe be able to sneak a smaller one on after a careful trim? (never ever used a nut splitter before so no idea of their efficiency). Quote Link to comment Share on other sites More sharing options...
zim Posted September 17, 2012 Share Posted September 17, 2012 I wouldn't heat it, there are rubber bushes behind and this will make a mess. I also wouldn't bother with a nut splitter. I doubt you could get a grinder in to cut the nut, maybe a die grinder but i wouldn't - chances are you'll damage the threads on the arm. You just get more power on the breaker bar. I use a torque multiplier on tight stuff, but isn't exactly in your normal tool kit ! G Quote Link to comment Share on other sites More sharing options...
GW8IZR Posted September 17, 2012 Share Posted September 17, 2012 A good quality impact socket and a long bar has always shifted these for me. Have a good look at whats left of the threads once the nut is off. Quote Link to comment Share on other sites More sharing options...
UdderlyOffroad Posted September 17, 2012 Share Posted September 17, 2012 From my (limited) experience, you need to do the following: Make sure you've had your Weetabix in the morning Get yourself one of these 3/4" socket sets. Crack off nuts using the supplied breaker bar and a piece of scaffold tube extension Quote Link to comment Share on other sites More sharing options...
cackshifter Posted September 17, 2012 Share Posted September 17, 2012 Try tightening it very slightly first; sometimes there is rust on the 'spare' thread, tightening it gives you a few degrees of clean threads to snap the bond. Once you can get it to move even slightly just work it to and fro. Quote Link to comment Share on other sites More sharing options...
SPendrey Posted September 17, 2012 Share Posted September 17, 2012 I just did my A-frame and had a similar problem... I have a reasonably powerful windy gun but that wouldn't do it, so I opted for the Clarke mains-powered impact wrench instead. Its 'rate of fire' is much higher than the air powered tool, and as such shifts the stuckest (new word?!) of nuts. It is just a pig to get into tight places, that's all. Quote Link to comment Share on other sites More sharing options...
Guest wunntenn Posted September 17, 2012 Share Posted September 17, 2012 Thanks chaps - looks like the scaffold tube is the next best bet then! Quote Link to comment Share on other sites More sharing options...
Disco-Ron Posted September 17, 2012 Share Posted September 17, 2012 If it were me and I really couldn't get it undone, I'd cut the side of the nut off with a grinder so that there's only a small bit of nut left before the thread, then use stiltsens, what's left will break and the nut will come off :-) Quote Link to comment Share on other sites More sharing options...
Guest wunntenn Posted September 17, 2012 Share Posted September 17, 2012 Thanks Ron, thats a good last resort. I'm whacking on a 29mm socket and trying the scaffold tube option first. Quote Link to comment Share on other sites More sharing options...
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