JB750 Posted May 13, 2013 Share Posted May 13, 2013 Hi all. I've had a problem on our 1975 300TDi Disco Auto for several months now and not really had a lot of time to look into it.When dropping the revs, there was a knocking from the engine area which I was assuming was possibly big ends or similar.Anyhow, when I finally got to do some work on it, the starter motor would spin but the engine didn't turn, so I assumed maybe the starter was sticking or something. So I removed it and checked on the bench. It was fine.Whilst I had the starter out, I thought I would check the flywheel to see if there was any damage to teeth etc. When I turned the nose of the crank, the flywheel only turned slowly with resepct to the speed I was turning the crank . So my guess now is that I probably have a broken crankshaft or at least the connection to the flywheel?The engine seems to have good compression when I turn the crank so I am assuming it is not the woodruff or something stupid like that.At least a broken crank would explain the nasty noise from the engine!John Quote Link to comment Share on other sites More sharing options...
steve b Posted May 13, 2013 Share Posted May 13, 2013 Hi and welcome to the forum It sounds to me like the flexplate cracking up cheers Steveb Quote Link to comment Share on other sites More sharing options...
Tanuki Posted May 13, 2013 Share Posted May 13, 2013 +1 on flexplate issue. You'll need to separate engine and box. Quote Link to comment Share on other sites More sharing options...
zim Posted May 13, 2013 Share Posted May 13, 2013 (edited) Delete please. I replied about a v8. Not worked on this diesel. G Edited May 13, 2013 by zim Quote Link to comment Share on other sites More sharing options...
JB750 Posted May 13, 2013 Author Share Posted May 13, 2013 +1 on flexplate issue.You'll need to separate engine and box. OK thanks. So I understand that it is very important to keep the torque converter in the gearbox when seperating the engine/box? I assume it is a case of undoing the bolts from flywheel to driveplate via the starter motor apperture? Any ideas how long a job and roughly how many of my English pounds to get the parts? Thanks again guys Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 13, 2013 Share Posted May 13, 2013 Flex plate to torque converter, there are 4 on a V8, would doubt it is different on a 300TDI, as they are the same box. Acces is via a removable plate on the bottom of the bellhousing on a V8, unsure on the diesel. You can get in there with a spanner relatively easily IMHO, just make sure it is a slim one Most likely this plate: http://www.ashcroft-transmissions.co.uk/index.php?act=viewProd&productId=180 Quite a job, either engine out or box slid backwards and supported with straps, either way not too bad really... just be methodical, it's only bolts Quote Link to comment Share on other sites More sharing options...
Les Brock Posted May 13, 2013 Share Posted May 13, 2013 200Tdi Flex plate access/ bolts is in via the starter motor aperture....which is a git on its own to get out Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 13, 2013 Share Posted May 13, 2013 Nasty, 300TDI the same I guess? Quote Link to comment Share on other sites More sharing options...
JeffR Posted May 13, 2013 Share Posted May 13, 2013 200Tdi Flex plate access/ bolts is in via the starter motor aperture....which is a git on its own to get out Les, that has to be the understatement of the decade! Who so ever designed the fitment of a 200Tdi starter needs taken into the back field with a 9mm........... Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 13, 2013 Share Posted May 13, 2013 Due to the location of the starter on a 200TDI, I managed to leave a couple of ring connectors from the alternator off on a certain forum members truck So yes, a git to get to Quote Link to comment Share on other sites More sharing options...
Boydie Posted May 14, 2013 Share Posted May 14, 2013 I simply cursed, the three top bolts holding the engine to the gearbox were total b*****ds, so be prepared to remove the engine mountings to lower the engine down to give your fingers room - you should also possess yourself of a 500mm long extension. I think the easy way is to remove the engine but the alternative of dropping the box is the option I went for although I dont think I would ever do it again. Removing the four bolts holding the torque converter to the flexplate was quite easy, aligning them up again during re-assembly was a different matter and of course one bolt fell out of the socket and had to be retrieved out of the housing (more tears!) so welcome to the LR forum Quote Link to comment Share on other sites More sharing options...
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