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How to remove Crankshaft Pulley? - Engine/Ancilliaries - The Lotus Forums Jump to content
peteyg

How to remove Crankshaft Pulley?

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Just changing the cambelt as it's long overdue. So long infact that I've forgotten how I got the crank pulley off last time to get the belt off. Just tried putting it in 1st gear with handbrake on but the engine still seems to turn. Now I've got the tensioner off and belt off the rest of the sprockets I'm worried about pistons moving too far and coming into contact with valves.

Pete

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I used a rubber strap wrench around the pulley - to hold it still while I cracked the nut.

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It can't be properly in gear - or your handbrake or clutch is totally f£$%d :thumbdown:

If it was in gear & the crankshaft was turning then you'd see one of the driveshafts turning.

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Get your Fitter's Mate to lock the flywheel with a suitable lever (tyre lever, large screwdriver) wedged into the ring gear and bearing against the bellhousing casting. Should really have got the pulley nut undone first....but that doesn't help now, does it??!!

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Thanks Chaps!

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Get your Fitter's Mate to lock the flywheel with a suitable lever (tyre lever, large screwdriver) wedged into the ring gear and bearing against the bellhousing casting. Should really have got the pulley nut undone first....but that doesn't help now, does it??!!

+1 to John's method . . . but place a rag and or cardboard around the opening on the bellhousing! Keep it nice -- it deforms easily with that kind of pressure, and I've seen one where it was actually chipped . . .

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When I'm doing Toyotas (and boy are those pulley nuts tight!) I use a tap wrench (monkey wrench) on the pulley rim and let it turn until it jams against something solid

But haven't used this method on a Lotus...anyway would suggest it be used only if necessary and with extreme caution.

You may find a steering wheel puller useful for getting the pulley off the shaft once the nut's off

Robert

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I got a passing neighbour to hold a large screwdriver in the starter teeth... popped the threadlock and it came out easily after that.

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I just put it in gear and put two c-clamps on the brake discs

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I used Robert's monkey wrench technique to good effect - just need to pad the contact point with the casting. No damage

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Just used the timing teeth method. Worked a treat and didn't even need a helper!

Pete

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I`m also struggling to get the crankshaft pulley off. I have the bolt off, no problem,  the starter motor trick worked like a charm. But now, how to remove the pulley? There is no place to use a puller (engine still in place) and it´s still very tight on the crankshaft. Any tricks I might have missed? Heat it up? I`m stuck on point (10.) of molemots the removal guide :-(

 

Edited by marode

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You could try tapping it one both frontal face sides with a plastic mallet,  also try if you can and get something to lever behind it on both sides a little at a time, such as a small pry bar but be sure to put something against the ally sump/block to prevent damage. 

Another way would be find out what thread the crankshaft bolt is,  find a bolt of the same thread but longer and use a puller,  the new extended bolt will give you something for the threaded part of the puller to push against :)

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1 hour ago, silverfrost said:

You could try tapping it one both frontal face sides with a plastic mallet,  also try if you can and get something to lever behind it on both sides a little at a time, such as a small pry bar but be sure to put something against the ally sump/block to prevent damage. 

Another way would be find out what thread the crankshaft bolt is,  find a bolt of the same thread but longer and use a puller,  the new extended bolt will give you something for the threaded part of the puller to push against :)

And put some copper slip on it before you put it back  :)

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Heating it up with a hot air gun could help. Levering it carefully from two points 180 degrees apart usually works...both together and one at a time, to make the pulley wobble it's way off.  As ever, it's a lot easier with the engine out(!)

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Many thanks for your suggestions. Levering from two points is obviously a good idea but a bit theoretical with the limited space... I'm off to a friends workshop and try to find / build a suitable puller. I´ve no idea how we managed to get that #!ø^∫! thing off while the last cam belt change 9 years ago.

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Good luck Maththias,  As Paul says put some copper slip on it this time :P

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