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2004 ZX636 B2H Front Sprocket Headache!

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MillaMeter
Nova Slayer



Joined: 24 Dec 2005
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PostPosted: 23:34 - 02 Jun 2010    Post subject: 2004 ZX636 B2H Front Sprocket Headache! Reply with quote
Hi,

Having a lil trouble with my Ninja, I bought a new chain and sprocket kit, everything ok apart from the front sprocket nut. I think it's still the original front sprocket from new as the bike has just hit 5000 miles. I tried using a breaker bar on the huge nut and failed, then moved on to a air rachet gun, still failed.i'm starting to run out of ideas. The sprocket nut has got locktight on it looking from the inside of the nut. The nut is quite weird 32mm socket closest to the sprocket and a square bit on the end which is 25mm socket.

Any ideas on how to get it off?

Regards

Rich
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DrDonnyBrago
World Chat Champion



Joined: 03 Jan 2010
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PostPosted: 09:47 - 03 Jun 2010    Post subject: Reply with quote
Loctite normally softens considerably under heat, heat the fecker up and use the air gun on it Thumbs Up .
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MillaMeter
Nova Slayer



Joined: 24 Dec 2005
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PostPosted: 15:31 - 03 Jun 2010    Post subject: Reply with quote
DonnyBrago wrote:
Loctite normally softens considerably under heat, heat the fecker up and use the air gun on it Thumbs Up .


Hi,

Thanks for the tip I'll try that 1 Smile

Regards

Rich
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alun111
World Chat Champion



Joined: 31 May 2007
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PostPosted: 15:54 - 03 Jun 2010    Post subject: Reply with quote
Don't give it too much heat or you may ruin your output shaft seals.
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MillaMeter
Nova Slayer



Joined: 24 Dec 2005
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PostPosted: 23:38 - 03 Jun 2010    Post subject: Reply with quote
Hi,

Tried heating the nut gently today and still no joy, my mate came round to give it a shot and the 25mm spanner just kept slipping. My dad tried 1 of his sockets on it and just snapped it into 3 pieces Sad

I have no idea how to win this battle Sad

Regards

Rich
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DrDonnyBrago
World Chat Champion



Joined: 03 Jan 2010
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PostPosted: 23:46 - 03 Jun 2010    Post subject: Reply with quote
Have you tried a really long breaker bar and a 6 point/surface drive socket?
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MillaMeter
Nova Slayer



Joined: 24 Dec 2005
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PostPosted: 00:04 - 04 Jun 2010    Post subject: Reply with quote
DonnyBrago wrote:
Have you tried a really long breaker bar and a 6 point/surface drive socket?


Hi,

Yup, that's what broke my old mans socket lol, I thought he snapped his breaker bar in half the bang was that loud when the socket exploded.

I found a picture of the exact nut on Google.

https://farm3.static.flickr.com/2486/4072357705_0bdc6a697c.jpg

Regards

Rich
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Towton 1461
Scooby Slapper



Joined: 15 Sep 2008
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PostPosted: 01:24 - 04 Jun 2010    Post subject: Reply with quote
How hot did you get the nut?

I had exactly the same struggles as you with a front sprocket on a ZZR.

Took it round the corner to the local garage. The boss rapidly heated
the nut to cherry red with the acetylene torch, then his lad whacked
the air wrench on it. The nut flew off.

Be brave, get the nut red hot. Thumbs Up
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Phoenix
Twisted Firestarter



Joined: 01 Aug 2002
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PostPosted: 03:07 - 04 Jun 2010    Post subject: Reply with quote
alun111 wrote:
Don't give it too much heat or you may ruin your output shaft seals.


You can replace an output shaft seal fairly cheaply so it's not a great loss, if heat is the only way to break the nut off then there is no other choice really.
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