GMC -- Alcoa Wheel torque

[olin r. boyer]

I know in all the discussion of "D" versus "E", Steel versus Polyester
sidewalls, and Mfg. suggested load-related pressures versus 80PSI, there was
some mention of wheel lug-nut torque, steel versus Alcoa.

Not sure that I recall clearly, but I know the torque specs for the special
Alcoa-specific lug nuts with the built-in washer were quite a bit lower than
the specs for steel wheels.

Seems as how the steel wheel lugs were supposed to be tightened to 200
foot-pounds plus, while the Alcoa lugs were down in the area of 140.

Since my Alcoas were installed by the tire shop (using their standard air
operated impact wrench) I'm quite sure mine are too tight.

I've just bought a torque wrench that goes clear up to 300 foot pounds, so
that it will be useful for the front axle-nut, as well as the wheel lugs,
but not sure of the torque needed for the wheel lugs.

Someone refresh my memory, please. I've looked at WWW.California.com/~eagle/
, but couldn't find anything there.

Thanks,

Olin Boyer
77GMCPB

 

[john wright]

I have mine at 150FT/# as per spec from Alcoa.

>
> I know in all the discussion of "D" versus "E", Steel versus Polyester
> sidewalls, and Mfg. suggested load-related pressures versus 80PSI, there was
> some mention of wheel lug-nut torque, steel versus Alcoa.
>
> Not sure that I recall clearly, but I know the torque specs for the special
> Alcoa-specific lug nuts with the built-in washer were quite a bit lower than
> the specs for steel wheels.
>
> Seems as how the steel wheel lugs were supposed to be tightened to 200
> foot-pounds plus, while the Alcoa lugs were down in the area of 140.
>
> Since my Alcoas were installed by the tire shop (using their standard air
> operated impact wrench) I'm quite sure mine are too tight.
>
> I've just bought a torque wrench that goes clear up to 300 foot pounds, so
> that it will be useful for the front axle-nut, as well as the wheel lugs,
> but not sure of the torque needed for the wheel lugs.
>
> Someone refresh my memory, please. I've looked at WWW.California.com/~eagle/
> , but couldn't find anything there.
>
> Thanks,
>
> Olin Boyer
> 77GMCPB

- --
J.R. Wright
GMC GreatLakers
77 Eleganza II
Michigan

 

[emerystora]

>
>but not sure of the torque needed for the wheel lugs.
>
>Someone refresh my memory, please. I've looked at WWW.California.com/~eagle/
>, but couldn't find anything there.
>
>Thanks,
>
>Olin Boyer
>77GMCPB

The Alcoas take 140 ft. lb. of torque. I believe that if you look
closely at the nuts that this is stamped into the outside area.

Emery Stora
77 Kingsley
Santa Fe, NM

 

[gene]

sorry you could not find the number, I had a link to Patricks site

http://www.gmcmotorhome.com/tech/alcoa_wheels/index.html

where he talks about the torque.

gene

>>
>>but not sure of the torque needed for the wheel lugs.
>>
>>Someone refresh my memory, please. I've looked at WWW.California.com/~eagle/
>>, but couldn't find anything there.
>>
>>Thanks,
>>
>>Olin Boyer
>>77GMCPB
>
>The Alcoas take 140 ft. lb. of torque. I believe that if you look
>closely at the nuts that this is stamped into the outside area.
>
>Emery Stora
>77 Kingsley
>Santa Fe, NM
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/