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J-type overdrive identification

posted by  pierre on  Fri Apr 3 18:22 CST 2009
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last visit: Fri Oct 10 10:49 CST 2014
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Hi,

I have an M46, J-type, Laycock overdrive that doesn't allow, by design, the installation of a speedometer-driving 'gear' on it.

What model and year of Volvo might this overdrive be from?

Thanks in advance.








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J-type overdrive identification

posted by  ODGuru on  Sat Apr 4 01:46 CST 2009
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last visit: Sat Oct 4 18:52 CST 2014
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1986 or newer.

If it is to be a replacement for an earlier OD, parts can be swapped from the old that will allow it to be used.

For me, just a gasket and some effort :>)

Duane








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J-type overdrive identification

posted by  pierre on  Sat Apr 4 04:15 CST 2009
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last visit: Fri Oct 10 10:49 CST 2014
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I have been told that the back-covers can be swapped.

Thanks for your reply.








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J-type overdrive identification

posted by  ODGuru on  Sat Apr 4 07:41 CST 2009
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last visit: Sat Oct 4 18:52 CST 2014
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Not just the back covers.

The drive gear on the OD output shaft must be exchanged for the spacer on the newer OD. Keep the gear orientation from one to the other or you will end up pulling the od again to change the gear.

VEry easy to mix up.

Duane








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J-type overdrive identification

posted by  pierre on  Sat Apr 4 09:54 CST 2009
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last visit: Fri Oct 10 10:49 CST 2014
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Thanks for the heads-up.







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