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Old 24 March 2010, 13:41   #1
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Siezed Driveshaft

I have a driveshaft which is seized to the crankshaft. Engine is only 2008.

Any ideas how to realease it?
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Old 24 March 2010, 13:57   #2
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you could try sliding a heavy socket or something heavy and solid ,,heavy piece of pipe or an old wheel hub something with a hole in it down the shaft and then clamp a couple of pair of mole grips near the end and try using it like a slide hammer to knock it out ,just watch the grips dont slip down and mark/ damage the splines .
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Old 24 March 2010, 14:28   #3
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Isn't it still under warranty?
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Old 24 March 2010, 14:32   #4
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Quote:
Originally Posted by m chappelow View Post
you could try sliding a heavy socket or something heavy and solid ,,heavy piece of pipe or an old wheel hub something with a hole in it down the shaft and then clamp a couple of pair of mole grips near the end and try using it like a slide hammer to knock it out ,just watch the grips dont slip down and mark/ damage the splines .
That's only possible of course if the driveshaft is sticking out by itself.
It's more likely that the whole of the bottom end is still attached and the drive shaft isn't accessable.

In that case the only thing I've found to work is to get the engine nice and hot, then get a dustbin around the bottom with plenty of really cold water as quick as possible and as deep as possible to get the drive shaft cold as it goes up through the exhaust. The differance in temperature and expansion may free it off. Well it worked for me once.

This is one reason I say the leg should be dropped each year to clean and lube the splines.

Nasher.
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Old 24 March 2010, 14:34   #5
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Quote:
Originally Posted by Nos4r2 View Post
Isn't it still under warranty?
Its used commercially.

Quote:
Originally Posted by m chappelow View Post
you could try sliding a heavy socket or something heavy and solid ,,heavy piece of pipe or an old wheel hub something with a hole in it down the shaft and then clamp a couple of pair of mole grips near the end and try using it like a slide hammer to knock it out ,just watch the grips dont slip down and mark/ damage the splines .
I'll give that a go. Doesn't matter about damaging the driveshaft. If I get it out, its going onto another gearbox anyway.

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That's only possible of course if the driveshaft is sticking out by itself.
It's more likely that the whole of the bottom end is still attached and the drive shaft isn't accessable.

In that case the only thing I've found to work is to get the engine nice and hot, then get a dustbin around the bottom with plenty of really cold water as quick as possible and as deep as possible to get the drive shaft cold as it goes up through the exhaust. The differance in temperature and expansion may free it off. Well it worked for me once.

This is one reason I say the leg should be dropped each year to clean and lube the splines.

Nasher.
I've removed the bottom end. Its strange, I fitted several other engines at the same time. They've had pretty much the same use, and they' came apart no problem.
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Old 24 March 2010, 15:19   #6
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If the gearbox is off, can you remove the powerhead with the driveshaft still attached? You'll be able to get a heat gun directly onto the joint then.
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