Dazman1360 Posted April 22, 2014 Share Posted April 22, 2014 I'm on a mission to fix a couple of irritating oil leaks, one is from the seal on the timing cover/crankshaft pulley. This is on a rebuilt engine from last summer, it leaked from the very beginning with a new seal, this was replaced with another new one and that leaked also.It's therefore quite unlikely a third new seal will fix the problem, the oil deflector is definitely fitted, so should I assume that the pulley itself is worn where the seal fits? I do have a spare pulley, but I'm unable to do a quick swap to check this as my cars runs Megajolt therefore it has a trigger wheel attached. I've no idea if the pulley leaked previously as it was from a spare unit with unknown history.Are the pulleys known to wear here? If so could an engineer machine the surface and sleeve to get back to correct diameter.Any thoughts welcomed.Thanks Quote Link to comment Share on other sites More sharing options...
Richard_M Posted April 22, 2014 Share Posted April 22, 2014 Oh yes the pulleys wear there. You'll observe a noticeable groove in the pulley where the oil seal fits.Easiest solution, assuming you want to keep this pulley as it has your trigger wheel attached, is to have the pulley 'sleeved' to give a new surface. Any machine shop will do this for you pretty quickly - not an expensive job - or you could do it yourself with a 'Speedi sleeve'.There is another potential problem though - some Triumph pulleys are off centre, so the outer diameter is not matched with the inner, so they run out of true. You'll be able to see this as the engine runs. This pulls the seal open in one particular direction and can also lead to front pulley oil leaks.Richard Quote Link to comment Share on other sites More sharing options...
GT6 M Posted April 22, 2014 Share Posted April 22, 2014 a couple of optionees,1, turn the spacer around2, pack the bottom of the seal housing oot, so seal will sit at a diff spot,3, sleeve it, but there quite dearI did / have done, both of 1 an 2, and it works nee botherBUTT, mek sure that ye bung some sealand into the bottom where thepacking is, as it can weep thru there, and ye think its the seal agen,M Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted April 22, 2014 Share Posted April 22, 2014 Can't turn the spacer round on a 13/60 'cause it's all part of the pulley. Packing the seal back a bit might work though and speedi sleeves are magichttp://www.barnwell.co.uk/catalog/index.php/cPath/23/osCsid/6o4b62ci12qba21vn383pcrr27You have to measure it though.....Nick Quote Link to comment Share on other sites More sharing options...
JohnD Posted April 22, 2014 Share Posted April 22, 2014 Prob not a good idea to turn the spacer around, even on an enegientwre you can do that.The Six cylinder one has one end chamfered, and the other not.The last engine I built successfully leaked excessively at first, because I had distorted the seal by pushing the non-chamfered end through it.Of course, if you have a lathe or know someone with one, chamfering the other end is perfectly practical.John Quote Link to comment Share on other sites More sharing options...
GT6 M Posted April 22, 2014 Share Posted April 22, 2014 thought it was a 6 Nick.Jon, you really need to get yer self a wee lathelots on flea bay at reasonable prices.M Quote Link to comment Share on other sites More sharing options...
junkuser Posted April 22, 2014 Share Posted April 22, 2014 Check with a bearing specialist whether there are seals available with same ID and OD but different lip design.I went through this exercise in 1997 having previously fitted two listed as correct for the Spitfire which did not seal.Found one of a different, double lip seal design, that is still not seeping.Would also be worth checking if silicone seals are available in the size you want as these seal better. Quote Link to comment Share on other sites More sharing options...
Dazman1360 Posted April 23, 2014 Author Share Posted April 23, 2014 Thanks for all the replies.I have a local retired engineer that could sleeve it for me for the cost of the materials, so that seems the best option. Anyone know what the diameter of the pulley should be, had a look through the WSM but couldn't see it.CheersDarren Quote Link to comment Share on other sites More sharing options...
mikew Posted April 23, 2014 Share Posted April 23, 2014 Do it yourself for about £22http://simplybearings.co.uk/shop/Engineering+Parts-Shaft+Repair+Sleeves-Imperial+Shaft+Repair+Sleeves/c4713_4847_4850/index.htmlMeasure the OD of the shaft. Buy suitable sleeve.Lightly coat shaft with hylomar or similar, tap speedy sleeve into place, remove locating ring from sleeveJob done.The sleeve is only fractions of a mm thick and will fit without issue under the oil seal, and gives a perfect smooth surface for the seal to rub on / seal against Quote Link to comment Share on other sites More sharing options...
JohnD Posted April 23, 2014 Share Posted April 23, 2014 796 wrote:Jon, you really need to get yer self a wee lathelots on flea bay at reasonable prices.MGot one, thanks, M!See the pulley boss below, done for clearance from electric radiator fan.JOhn Quote Link to comment Share on other sites More sharing options...
piman Posted April 23, 2014 Share Posted April 23, 2014 Hello Dazman, fit the seal into the cover, fit the cover and locate with a few screws, place the pulley onto the shaft then tighten down the screws, remove the pulley and fit and tighten the rest of the screws. This gives the best concentricity of seal to shaft. (doesn't work if the cover is dowelled though.)Alec Quote Link to comment Share on other sites More sharing options...
mazfg Posted April 23, 2014 Share Posted April 23, 2014 I had terrible trouble with mine even after buying a new oil sleeve. Got one from Barnwells, with a double lip, as opposed from the usual specialists. Worked perfectly. The original one I took out had a full metal jacket/ cassette type and the replacement also. I had more faith with these type :) Quote Link to comment Share on other sites More sharing options...
Dazman1360 Posted May 5, 2014 Author Share Posted May 5, 2014 Nick_Jones wrote:Can't turn the spacer round on a 13/60 'cause it's all part of the pulley. Packing the seal back a bit might work though and speedi sleeves are magichttp://www.barnwell.co.uk/catalog/index.php/cPath/23/osCsid/6o4b62ci12qba21vn383pcrr27You have to measure it though.....NickNick,There are 2 options for the sleeve with the correct diameter SKF CR99161 & SKF CR99162, the difference being the width. In my rush to order I didn't check this so ordered the narrower of the 2 which has arrived and is too narrow, the wider (now looking at the dimensions) is wider but not a huge amount. Presumably this didn't cause you any issues when you fitted yours?Darren Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted May 5, 2014 Share Posted May 5, 2014 I haven't used one in this application. I've used in general industrial applications and on a rear crankshaft oil seal on a Triumph 6. Provided the sleeve sits fairly centrally over the area the seal runs you should be fine.Nick Quote Link to comment Share on other sites More sharing options...
Dazman1360 Posted June 2, 2014 Author Share Posted June 2, 2014 Just an update on this which may help anyone else trying to fix the same issue.Fitted a Speedi-sleeve (Part No. SKF CR99162), which didn't solve the problem unfortunately, so ordered and fitted an alternative seal from Barnwell, it's double lipped but isn't as deep as the originals, 0.37" as opposed to 0.5" and to date the leak has stopped. Here's the link for anyone wanting to try one: Click Here. Quote Link to comment Share on other sites More sharing options...
junkuser Posted June 2, 2014 Share Posted June 2, 2014 :) 22/4/14 Quote Link to comment Share on other sites More sharing options...
Dazman1360 Posted June 3, 2014 Author Share Posted June 3, 2014 junkuser wrote: :) 22/4/14Sorry, should have acknowledged your earlier post as the inspiration for trying a different seal, so thank you. Quote Link to comment Share on other sites More sharing options...
junkuser Posted June 3, 2014 Share Posted June 3, 2014 The scenic route was rather a worry but you go there,All the Best, Mal. ;) Quote Link to comment Share on other sites More sharing options...
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