kjn100 Posted January 29, 2013 Share Posted January 29, 2013 Hi I am in the middle of changing the layshaft bearings to my series 3 swb. I have encountered a problem which I really appreciate any help with. I can't seem to loosen the 4 nuts fixing the rear prop shaft to the transmission brake. It seems that a some time someone has had a go at removing the rear prop as three of the four nuts have rounded / burred and consequently I can't seem to get them undone. The thread or stud projects over the head of the nut so I am unable to weld a nut to them to be able to loosen. This has resulted in me removing the gearbox with the rear prop still attached - however I am now stuck as I am unable to remove the transfer box whilts the rear prop remains in-situ. Anyone have any ideas or experience in dealing with this.... I would be very very very appreciative. Photos below:Many thanks. Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted January 29, 2013 Share Posted January 29, 2013 this seems a good excuse to get some Irwin bolt extractors! Quote Link to comment Share on other sites More sharing options...
dirtyninety Posted January 30, 2013 Share Posted January 30, 2013 Get a Carbide burr, and using a rotary tool of your choice, carefully grind the nuts off Carbide burrs: http://www.ebay.co.uk/sch/i.html?_trksid=p5197.m570.l1311&_nkw=carbide+burr&_sacat=0&_from=R40 This is the rotary tool/ die grinder I have, its cheap but its done endless jobs and still going very strong http://www.ebay.co.uk/itm/1-4-Straight-Inline-Air-Die-Grinder-with-Tools-5-Grinding-Stones-2-Spanners-Car-/110886322827?pt=UK_Air_Tools_and_Compressors&hash=item19d157028b WEAR EYE PROTECTION FOR THE LOVE OF GOD! And then get new bolts http://www.paddockspares.com/prbnut-propshaft-nut-and-bolt.html Quote Link to comment Share on other sites More sharing options...
smokinv8 Posted January 30, 2013 Share Posted January 30, 2013 Can you not just knock them round using a hammer and chisel? Quote Link to comment Share on other sites More sharing options...
secondjeremy Posted January 30, 2013 Share Posted January 30, 2013 I'd say that those nuts will cut off with a sharp cold chisel. Remember earlier ones are BSF threaded - which may be why they've got burred. You may even be able to tap the correct size socket on - I found 3/8 drive was better than 1/2 in for these nuts. Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 30, 2013 Share Posted January 30, 2013 this seems a good excuse to get some Irwin bolt extractors! Seconded! I borrowed some from a friend and they work brilliantly. Shame about the price, but you get what you pay for, and it avoids the cost of replacing parts that get damaged by drills, grinders and whatnot, and saves a lot of time. Of course, they'll be there waiting next time you have a bad nut or bolt, too. Quote Link to comment Share on other sites More sharing options...
kjn100 Posted January 30, 2013 Author Share Posted January 30, 2013 Many thanks for all the replies - I've ordered a 9/16 deep prop socket and will try that first... Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted January 31, 2013 Share Posted January 31, 2013 Seconded! I borrowed some from a friend and they work brilliantly. Shame about the price, but you get what you pay for, and it avoids the cost of replacing parts that get damaged by drills, grinders and whatnot, and saves a lot of time. Of course, they'll be there waiting next time you have a bad nut or bolt, too. absolutely!! if i think anything will put up a fight, ill use to bolt extractors. save so much hassle. Quote Link to comment Share on other sites More sharing options...
MECCANO Posted January 31, 2013 Share Posted January 31, 2013 3rded on the Irwins. Although they use to do an imperial and metric set (even though they claim they do both) If one failed the other would always do it. I found the trick was an a long extension bar to steady them, and stop them twisting off. Quote Link to comment Share on other sites More sharing options...
kjn100 Posted February 3, 2013 Author Share Posted February 3, 2013 Thanks for all your help - I bought a 9/16 propshaft deep socket for a tenner of fleabay and these came off very easy with a 12v impact wrench. Once again thanks for all your help. Quote Link to comment Share on other sites More sharing options...
Snagger Posted February 3, 2013 Share Posted February 3, 2013 Ah, so it was just the ends of the nuts that were rounded, not the backs. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.