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Fuel tank straps

Discussion in 'Peterbilt Forum' started by zx150, Jan 29, 2017.

Page 1 of 3
  1. Jan 29, 2017 #1
    zx150

    zx150 Medium Load Member

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    I have a 91 Pete and the fuel tank straps failed. The straps are aluminum and failed where they connect to the bottom part of the frame bracket where the bolt slides thru. Looks like metal fatigue was the culprit.

    Are the stainless replacement straps stronger than the aluminum ones? Also are there any strength gains in going to 4 strap instead of the factory 2 strap setup?
     

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    zx150, Jan 29, 2017
    zx150, Jan 29, 2017
    #1
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  3. Jan 29, 2017 #2
    Bigrayon

    Bigrayon Road Train Member

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    More is always better
     
    Bigrayon, Jan 29, 2017
    Bigrayon, Jan 29, 2017
    #2
    zx150 Thanks this.
  4. Jan 29, 2017 #3
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Two is good and stainless is many times stronger. Don't over tighten the aluminum straps.
     
    BoxCarKidd, Jan 29, 2017
    BoxCarKidd, Jan 29, 2017
    #3
    zx150 Thanks this.
  5. Jan 29, 2017 #4
    zx150

    zx150 Medium Load Member

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    Is there a suggested torque rating to use while tightening down?
     
    zx150, Jan 29, 2017
    zx150, Jan 29, 2017
    #4
  7. Jan 29, 2017 #5
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Not that I know of. Just snugged up good has always worked for me. A moron with an air gun has shortened the life of many aluminum straps.
     
    BoxCarKidd, Jan 29, 2017
    BoxCarKidd, Jan 29, 2017
    #5
  8. Jan 29, 2017 #7
    zx150

    zx150 Medium Load Member

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    Yeah, I'd be willing to bet he's the guy who cost me a fuel tank!
     
    zx150, Jan 29, 2017
    zx150, Jan 29, 2017
    #7
    KB3MMX Thanks this.
  9. Jan 29, 2017 #7
    special-k

    special-k Road Train Member

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    30 ft/lbs iirc its not very much l know that. Those aluminum ones were famous for breaking. Go with 2 stainless ones for sure. Pretty expensive to upgrade to 4 l think if you have to change the hanger bracket.
     
    special-k, Jan 29, 2017
    special-k, Jan 29, 2017
    #7
  10. Feb 3, 2017 #8
    Ristow

    Ristow Road Train Member

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    there is a torque spec. our tanks had the spec imprinted in the tanks by the cap. but i cant recall them. 8LBs for steel straps and 30 for alumy...?
     
    Ristow, Feb 3, 2017
    Ristow, Feb 3, 2017
    #8
    BoxCarKidd and SAR Thank this.
  11. Feb 3, 2017 #9
    SAR

    SAR Road Train Member

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    @Ristow is correct. Here is a pic from a sticker off my truck.

    image.jpeg
     
    Last edited: Feb 3, 2017
    SAR, Feb 3, 2017
    SAR, Feb 3, 2017
    #9
    BoxCarKidd Thanks this.
  12. Feb 3, 2017 #10
    Ristow

    Ristow Road Train Member

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    wow. my memory worked. i'll hafta try not to poke my brain with the q-tip next ear cleanin'...
     
    Ristow, Feb 3, 2017
    Ristow, Feb 3, 2017
    #10
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