muss12 Posted November 2, 2013 Share Posted November 2, 2013 Right here goes, 90 300tdi I've changed the crankshaft front seal 7 times now!!! I've even got the correct tool to fit it aswell! After a coupl of days the seal fails and oil leaks out of the hole at the bottom of the timing cover, I've been told that maybe the crankcase has to much pressure build up and pushing oil past the seal, I've took off the cyclone breather and cleaned it out, Is there anything else that I can try before I bite the bullet and send it off to the garage and have to re mortgage the house to pay the garage bill Jim Quote Link to comment Share on other sites More sharing options...
mat2495 Posted November 2, 2013 Share Posted November 2, 2013 with the engine running see if there is a build up of pressure at the rocker breather or dipstick tube, which should confirm or rule out crankcase pressure. Presumably the seal lands are in good condition? Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 Seal lands? Does that mean where the seal seats into? if so yes the edge is smooth all round Quote Link to comment Share on other sites More sharing options...
western Posted November 2, 2013 Share Posted November 2, 2013 Seal lands? Does that mean where the seal seats into? if so yes the edge is smooth all round Yes & the face on the shaft that runs through the seal. Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 The shaft seems ok was a little rusty but cleaned up all right and there wasn't anything out of place on there, was smooth and the sprocket fitted well on it. Haven't a clue Ralph what it could be, driving me crazy the last month and a half, everything goes fine got the tool to fit the seal then couple of days later oil starts leaking again Quote Link to comment Share on other sites More sharing options...
Ash.Witty Posted November 2, 2013 Share Posted November 2, 2013 When you say the front seal so you mean the crankcase to timing case seal? Are you using quality seals or Britpart stuff? Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 Err4575 front crankshaft seal, and the last seal I used was a LR one. the ones before was bearmach Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted November 2, 2013 Share Posted November 2, 2013 Does the leak appear to be coming from between the seal and the casting or the seal and the crankshaft? The running surface seal land on the shaft should be perfectly smooth. No ridges or rust or anything otherwise it will leak. Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 can't really tell every time I take the front cover off there is oil sat underneath the crankshaft sprocket, there isn't oil anywhere else in the casing i:e not the camshaft Quote Link to comment Share on other sites More sharing options...
western Posted November 2, 2013 Share Posted November 2, 2013 are you very lightly lubricating the seal inner lip when fitting ? if fitted dry it maybe grabbing on the crank surface & getting torn or nicked Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 I did that on all the seals Ralph, little bit of oil both outer and inner lip, even pressed the sprocket back on so I didn't cause any damage if I tried to push it back in Quote Link to comment Share on other sites More sharing options...
western Posted November 2, 2013 Share Posted November 2, 2013 we can eliminate that as the cause of failure then, on the dead seals was there any sign of the lip being folded on itself or any thing that might pin point the failure. Quote Link to comment Share on other sites More sharing options...
GW8IZR Posted November 2, 2013 Share Posted November 2, 2013 Just a thought, correct grade of oil? Quote Link to comment Share on other sites More sharing options...
Daan Posted November 2, 2013 Share Posted November 2, 2013 Do you have a breather pipe fitted? I had half a liter oil in the timing belt cover once; this was the result of a blocked breather pipe. Daan Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 On the first few there was signs that I nicked the lip, thats why I started to press them back in, instead of me pushing the sprocket on, I'm yet to remove this last seal as I haven't a re-placement to put back in, plus now I've spent over £30 on the buggers, Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 Just a thought, correct grade of oil? sI use 10w/40 semi synthetic Quote Link to comment Share on other sites More sharing options...
dave88sw Posted November 2, 2013 Share Posted November 2, 2013 Have you replaced the o ring on the crankshaft behind the crank timing pulley? Maybe the sprocket is sitting too far in and catching the face of the seal. Maybe consider changing the crank timing pulley as the seal land is part of the pulley Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 Have you replaced the o ring on the crankshaft behind the crank timing pulley? Maybe the sprocket is sitting too far in and catching the face of the seal. Maybe consider changing the crank timing pulley as the seal land is part of the pulley I've re placed the O ring every time I've changed the seal, Never thought about the sprocket sitting to far in, just thought it went on till it hit the O-ring Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 2, 2013 Author Share Posted November 2, 2013 In the parts manual it shows something called a flinger err2100 that goes in front of the pulley then the dog nut and washer goes on, mine never had this when I took my pulley off, is this important to have this? Quote Link to comment Share on other sites More sharing options...
western Posted November 3, 2013 Share Posted November 3, 2013 IIRC the 'flinger' protects the timing case dust seal from mud getting in, I would say Yes it's meant to be fitted, if you cannot find one locally try http://www.brit-car.co.uk/search.php?xSearch=err2100 Quote Link to comment Share on other sites More sharing options...
muss12 Posted November 3, 2013 Author Share Posted November 3, 2013 Cheers Ralph, the diagram shows it going on the front, that's why it confused me as the dust shield fits on the back of the pulley not the front Quote Link to comment Share on other sites More sharing options...
western Posted November 3, 2013 Share Posted November 3, 2013 in my LR RAVE manuals it doesn't mention the flonger at all during remove/refit process. Quote Link to comment Share on other sites More sharing options...
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