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post #1 of 6 (permalink) Old 01-06-19, 11:42 AM Thread Starter
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Steering rack preload adjustment

Hi
Do you guys know how to setup preload in 08 Nav steering rack? There is a big screw on left bottom (driver side) of the rack. Before I start tinkering, I would like to know if that even makes any sense.
If it does, do I have to remove that screw (it's 3" in diameter I think) to adjust it?

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post #2 of 6 (permalink) Old 01-07-19, 03:52 PM
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Re: Steering rack preload adjustment

Honestly, I've never heard of anyone having to adjust the preload on a rack. If things have become loose, you may be better off replacing it.
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Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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post #3 of 6 (permalink) Old 01-07-19, 03:57 PM Thread Starter
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Re: Steering rack preload adjustment

I thought it would be easier to adjust it then replacing it. Also more cost efficient
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post #4 of 6 (permalink) Old 01-07-19, 04:19 PM
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Re: Steering rack preload adjustment

Can't argue with that, but rack and pinion doesn't have the play that the old school knuckles had. Tolerances are tighter, generally it means that if the preload is lost, you probably have to do a rebuild, in the long run, you're better off replacing.

Ever notice that there's so many high performance parts available for GM products?

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post #5 of 6 (permalink) Old 01-08-19, 02:55 AM
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Re: Steering rack preload adjustment

As above , usually indicative of excessive wear / or a component failure .Vital that any adjustments or overhaul work is carried out to correct specs . Not like old racks which were relatively easy to overhaul .

Never, never, never give up.
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post #6 of 6 (permalink) Old 01-13-19, 08:26 AM Thread Starter
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Well, I decided to try with adjusting that nut I was talking about. Loosen the big washer/nut and used 19mm socket to tighten the small nut. I did half a turn, maybe less than that. The play is gone and the steering it good now. Just wondering how long it's going to last. Will see
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