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Re: [GMCnet] Confused about Tires [message #75073 is a reply to message #75069] Sat, 27 February 2010 11:04 Go to previous message
Steven Ferguson is currently offline  Steven Ferguson   United States
Messages: 3447
Registered: May 2006
Karma:
Senior Member
On Sat, Feb 27, 2010 at 7:37 AM, Thomas Mike <mthomas@wideopenwest.com> wrote:
>
>
> Steve,
>
> I am replacing the lower ball joints and bushings now. What can go wrong with the install of the lower ball joints? Looks simple, two bolts on the sides and the nut on the knuckle.
>
> I purchased the Moog K-6215 ball joints. The only other advice I received was to destroy the threads after install to insure the nuts don't loosen.
>
> Thanks
> --
>
Mike,
That is exactly what is wrong. In my opinion, the 5/16 bolts are
not up to the job. Perhaps they work fine on an automobile
application but from my experience, they are inadequate for our
application. Here's my recommendation for proper ball joint
installation:
http://www.gmcws.org/Tech/Getting_Your_GMC_Under_Control.pdf
Pleae look at the photos and use the examples as a guide for
inspecting your control arms and replacing the bushings. Note that
the replacement 5/16 bolts require 25-30 ft lbs of torque to tighten.
More will snap them off. The 3/8 bolts can be torqued to 60-65 ft lbs
and literally pull the sides of the ball joint pocket in to match the
shape of the replacement ball joint. Always use thread lock.
> Troy, MI
> 77 Eleganza II
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--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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