Crank sprocket removal
- Thread starter gR@HaM
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M8 is a good guess - see http://www.landyzone.co.uk/lz/f8/changing-200tdi-timing-chain-probs-111868.html
They are M5, 0.8 thread.
Had a go at hammering a viscous fan spanner behind the gear to work it off but no joy, just more damage to the rear timing case. Can't believe how hard it is to shift, starting to think I'm missing something obvious..
Does the woodruff key need removing first? (tbh I haven't got me head around where it is)
how about the large crankshaft bolt, I've temporarily replaced it with washer to allow me to turn the engine by hand - does it need to be removed to pull the gear off?
GRRRR!!!
Had a go at hammering a viscous fan spanner behind the gear to work it off but no joy, just more damage to the rear timing case. Can't believe how hard it is to shift, starting to think I'm missing something obvious..
Does the woodruff key need removing first? (tbh I haven't got me head around where it is)
how about the large crankshaft bolt, I've temporarily replaced it with washer to allow me to turn the engine by hand - does it need to be removed to pull the gear off?
GRRRR!!!
Dent
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Thanks Dent, I don't really want to wait 5 days for delivery but can buy the generic puller from machine mart and get hold of some bolts to fit..
terryds
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Looks like you will need a puller for the removal of the crank sprocket with some heat if necessary. The bolts look like an M5 thread so don't be too heavy handed. I suspect the locktite needs to be released with some heat. This is covered in the Glencoyne article.
Make sure you replace the oil seal behind as any heat may damage it.
Make sure you replace the oil seal behind as any heat may damage it.
bananahead
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you dont need woodruff key out first, you cant really get it out anyway. If youve been prying at the gear then it might now be very slightly misaligned by a fraction of a millionth of a mm making it even tighter. If this was me the next step would be to smack it head on with a hammer, it might just break any sort of seal/bond that is holding it. Even if you destroy it, it doesnt matter anyway you said its wrecked now so just set about it with hammers and chisels and stuff, you wont really damage anything unless your using a sledgehammer.
bananahead
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Did you remove the radiator when you did the timing belt before? It is really usefull to do so, so that you can look at the marks (especially cam) head on. Its possible to use a mirror but a lot easier/more effective to be able to see it head on. For the hassle involved its worth doing, at least you can be sure it is right.
bananahead
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I use a mirror, and its ok but as you say not ideal. A torch is useful you need to know you are looking straight on at it. you can move is so you can see along the top of the tooth then the underneath but you obviously want to be in the middle if u get what im saying. also i have got a piece of card with a good straight edge and ran it across from the timing case mark to the middle of the cog to see if then the mark lines up... none of it ideal, but i wouldnt be suprised if it was that cog you have a tooth out. i use the rear view mirror it pops off easy enough and is nice and small for getting in there and holding.
terryds
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Out of interest, did you adapt the 2 jaw puller or did it slip in behind the sprocket?Job done!! Well the first one anyway, I got plenty of other issues but have got the sprocket off
thanks for the pointers chaps.
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