Locked center diff on a 4kQ

Huw Powell audi at humanspeakers.com
Thu Feb 7 17:56:58 PST 2008

> I have not driven my '87 4kQ for a few years due to a clutch going out on
> it. I just had a guy put in a new clutch and pressure plate in for me, but
> now it appears that my center diff is stuck in the locked position. I tried
> the vacuum switch and I can lock/unlock the rear, but the center "feels"
> locked, although he indicator light is not on.
> Basically, for the moment, I don't care about being able to lock it - I want
> it unlocked so that I can drive the car. Where is the lock mechanism located
> and how do I tackle this?

I'm pretty sure it's down on the side of the tranny, though I don't know 
which side.

It is vacuum operated, so look for a plastic actuator-looking thing that 
is might not be connected to lines as it should be, or has broken vacuum 

Anyway, once you find it, I think all you have to do it move the 
actuator part to its "other" position.

Huw Powell



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