| Re: [GMCnet] Who do we trust? Do we have to check others work more often now days? [message #328138 is a reply to message #328136] |
Wed, 10 January 2018 17:54   |
James Hupy
Messages: 6806
Registered: May 2010
Karma:
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Senior Member |
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I mount wheels while the coach is on stands. I start all threads by hand,
always. I run the nuts with an air tool, that is set on lowest setting.
With my shop air supply and a good Ingersoll air wrench, that equates to
about 70 ft. pounds. I then lower the coach to the ground and torque by
hand. Never trust an air wrench. Too many variables.
I too, have encountered lugs too tight to be loosened by a 1/2" air
wrench. But, it scares me more to find loose lugs. Seen quite a few broken
studs on GMC motorhomes. 150 ft.lbs is a lot of torque on a 9/16" fastener.
Jim Hupy
Salem, Or
On Jan 10, 2018 3:10 PM, "John R. Lebetski" wrote:
> No one comes within air hose reach of any of my vehicles. I brought my
> Alcoas to tire shop 3 at a time then rechecked balance on my machine before
> installing and hand torquing to the Alcoa pattern. Don't get me started
> with directional and corner specific tire / wheel mounting. 3rd Gen
> Firebirds
> with 16x8 have front and rear only wheels stamped FRONT and REAR in the
> castings. Due to different offsets. Put a rear in front on one side only
> and
> it will pull the wheel out of your hand if you brake hard. I was aware of
> this so it was easy to spot on friends car with eratic handling problems.
> Then he had a guy super over torque aluminum wheel nuts with an impact 90
> spec up to 150. So he want back and the mgr had the tech redo the car by
> setting a tq wrench to 90 and hitting all the lugs, but never loosened
> them first. So he said they were all FINE. All fine but still at 150.
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
>
>
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