Rover8FFR Posted July 3, 2015 Share Posted July 3, 2015 Well Gents it has been made for my evaluation and I think it does nicely. To top it all it has been machined by an engineer who spends his days amongst other things making Rolls Royce Gearboxes, so fitting that an RR connection should go with the Piggy. Comments?? Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted July 3, 2015 Share Posted July 3, 2015 Well Gents it has been made for my evaluation and I think it does nicely. To top it all it has been machined by an engineer who spends his days amongst other things making Rolls Royce Gearboxes, so fitting that an RR connection should go with the Piggy. Comments?? Hi Wayne, If the other end is identical, then the tool is not finished yet. See attached drawing that I did from an original army tool about 20 years ago. The four radial holes on right of side view are for putting rod or pin punch in to withdraw sleeve once hub is fully home. The taper is to ease the hub seal over without damaging it, the groove face of inner end of tool is to go over the inner seal to ensure no damage to it occurs. Quote Link to comment Share on other sites More sharing options...
Rover8FFR Posted July 3, 2015 Share Posted July 3, 2015 Hi Wayne,If the other end is identical, then the tool is not finished yet. See attached drawing that I did from an original army tool about 20 years ago. The four radial holes on right of side view are for putting rod or pin punch in to withdraw sleeve once hub is fully home. The taper is to ease the hub seal over without damaging it, the groove face of inner end of tool is to go over the inner seal to ensure no damage to it occurs. Fook I wish I had seen that first Richard... Can I print this off to speak to my chap. Assumed it was just a sleeve with inner and outer diameters that were critical..... Thanks for sharing though. Best Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted July 3, 2015 Share Posted July 3, 2015 Fook I wish I had seen that first Richard...Can I print this off to speak to my chap. Assumed it was just a sleeve with inner and outer diameters that were critical..... Thanks for sharing though. Best I assumed you had drawing of original tool until I just saw the photo. You can copy it by all means. (Normal charges apply: 1 x slab of beer) Quote Link to comment Share on other sites More sharing options...
Rover8FFR Posted July 3, 2015 Share Posted July 3, 2015 I assumed you had drawing of original tool until I just saw the photo. You can copy it by all means. (Normal charges apply: 1 x slab of beer) Alas No! I was wondering though how that tool slides over inner bearing, which is wider and must be fitted before hub?????? Especially as hub and drum are clamped together on refitting as per EMER. Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted July 3, 2015 Share Posted July 3, 2015 Alas No!I was wondering though how that tool slides over inner bearing, which is wider and must be fitted before hub?????? Especially as hub and drum are clamped together on refitting as per EMER. Sorry, far too long ago when I last used one of these, now I think about it I think the groove is for clearance from the inner bearing cage to avoid damaging it, the purpose of the sleeve is to keep the hub square to the shaft as you slide it into the inner and outer seals. Once in place, the hub is supported and held in, then tool withdrawn and outer bearing fitted. I last had a Pig hub off about 25 years ago, so making my memory work now. Quote Link to comment Share on other sites More sharing options...
Peakrec Posted July 3, 2015 Share Posted July 3, 2015 Sorry, far too long ago when I last used one of these, now I think about it I think the groove is for clearance from the inner bearing cage to avoid damaging it, the purpose of the sleeve is to keep the hub square to the shaft as you slide it into the inner and outer seals. Once in place, the hub is supported and held in, then tool withdrawn and outer bearing fitted. I last had a Pig hub off about 25 years ago, so making my memory work now. I would like a completed tool please, send me a pm so we can organise. Many thanks Peakrec. Quote Link to comment Share on other sites More sharing options...
Rover8FFR Posted July 21, 2015 Share Posted July 21, 2015 (edited) Regrettably I have had to work around a couple of timeframes and deadlines recently, but was delighted to see this on my desk this morning. Richard thanks for the sketch Edited July 21, 2015 by Rover8FFR Quote Link to comment Share on other sites More sharing options...
Rover8FFR Posted July 23, 2015 Share Posted July 23, 2015 PDF of the CAD drawing I did for the fabricator / machinist if it helps anyone out there. Thanks to Clive and Richard for their help on this. fv1611a oil sleeve.pdf Quote Link to comment Share on other sites More sharing options...
Rover8FFR Posted October 8, 2015 Share Posted October 8, 2015 Well I used the tool and its a bit tooooo snug.. Bugger! I've checked the dimensions and its bang on,as per the info shared... Its the merest of tolerance that is making it tight so was going to use a honing tool on the internal bore. I'll be using the micrometer on the hub sleeve to see just how tight it is..... I guess modern machining with computer accuracy means its very precise these days.... Update to follow with some pictures..... I need to keep my spare camera with the tools, so I remember to snap progress..... Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted October 8, 2015 Share Posted October 8, 2015 That is unfortunate Wayne. Others have used that drawing without a problem, maybe they told the machinist what it was for and he gave it a bit of tolerance. Quote Link to comment Share on other sites More sharing options...
Rover8FFR Posted October 8, 2015 Share Posted October 8, 2015 That is unfortunate Wayne. Others have used that drawing without a problem, maybe they told the machinist what it was for and he gave it a bit of tolerance. I suspect its the imperial to metric conversion that has caused the snug fit. I did explain reasons for use, but engineer was younger than me, so he followed by machine drawing. Its easier to lose a bit than add it on, so it will be all good in the end. The tolerance is probably less than 0.25mm as it slips over the end thread, but then is super tight .... Cheers Quote Link to comment Share on other sites More sharing options...
datadawg Posted October 8, 2015 Share Posted October 8, 2015 Hi Wayne,If the other end is identical, then the tool is not finished yet. See attached drawing that I did from an original army tool about 20 years ago. The four radial holes on right of side view are for putting rod or pin punch in to withdraw sleeve once hub is fully home. The taper is to ease the hub seal over without damaging it, the groove face of inner end of tool is to go over the inner seal to ensure no damage to it occurs. Richard, I don't know what's more impressive, all your knowledge or the fact that you can remember and locate a drawing you made 20 years ago! Amazing, my hat off to you, sir! Quote Link to comment Share on other sites More sharing options...
Rover8FFR Posted October 8, 2015 Share Posted October 8, 2015 Richard,I don't know what's more impressive, all your knowledge or the fact that you can remember and locate a drawing you made 20 years ago! Amazing, my hat off to you, sir! That's why this forum is invaluable to all of us..... Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted October 8, 2015 Share Posted October 8, 2015 Richard,I don't know what's more impressive, all your knowledge or the fact that you can remember and locate a drawing you made 20 years ago! Amazing, my hat off to you, sir! Thanks!! I have been working full time for 41 years on military vehicles now, so I have picked up a bit of useless information on the way, and one day it helps myself or others. Quote Link to comment Share on other sites More sharing options...
Rover8FFR Posted October 8, 2015 Share Posted October 8, 2015 Thanks!!I have been working full time for 41 years on military vehicles now, so I have picked up a bit of useless information on the way, and one day it helps myself or others. Well I for one am extremely grateful to people like you and Clive, but that is relative to my toys.. So many specialist people it makes you dizzy:nut: Quote Link to comment Share on other sites More sharing options...
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