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Beware of the stock tow hooks!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5Junkie, Nov 8, 2001.

  1. K5Junkie

    K5Junkie 1/2 ton status

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    After trying to get extracted from a mud hole this past weekend my lower bolt on the tow hook decided to give and let the hook go all up into my bumper![​IMG] I guess it is time for a real bumper![​IMG] Here are some before and after shots:
    After

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  2. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Ohh that stinks. Sidlading them is also bad. I twisted the frame horn on the Lady's 79 when we had to drag the front around.

    Women dig dents and flat paint!
    coloradok5.com/gallery/Grim
    75 Jimmy, Dollar
    Grim-Reaper
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    I have *heard*, never seen proof, that those hooks/attaching bolts, are designed to shear off before the frame does. Thus, saving the frame. Wouldn't work for side loads I guess, but straight on, it makes sense. Kind of.

    Dorian
    My tech/links page: &lt;a target="_blank" href=http://www.dorianyeager.com/index2.html&gt;www.dorianyeager.com/index2.html&lt;/a&gt;
    Why insist on counting when the ring gear has the tooth counts stamped in?
     
  4. arq

    arq 1/2 ton status

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    that sucks, i just picked up some stock hooks. where yours mounted to the frame or the bumper. I'm thinking of extending the backing plate(what the hook bolts upto on the other side of the frame) to grip more of the frame.

    ARQ.

    PS: who's mud man on the right???

    offroad baja!!!
    72 4x4 CST Blazer
    71 4x4 CST Blazer
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  5. 76chevy

    76chevy 1/2 ton status

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    Sorry about the tow hooks. I've seen them bend a little before, but never like that.

    Nice rig though.


    <font color=red>Spirit of 76</font color=red><P ID="edit"><FONT class="small">Edited by 76chevy on 11/08/01 12:04 PM.</FONT></P>
     
  6. K5Junkie

    K5Junkie 1/2 ton status

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    I believe they were bolted to the frame. If i decide to put on another stock bumper, i have some shackles and mounts that are off a military blazer which i will mount on the frame and cut holes through the bumper like it was on the military blazer. I believe they were used to air lift from so they should be stout enough i hope.

    As for mud man, i don't know who he was, just some guy on the trail. There seemed to be alot of mud men out there that day. Even some swimming in the mud every now and then[​IMG]

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  7. 76chevy

    76chevy 1/2 ton status

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    Sorry about the tow hooks. I've seen them bend a little before, but never like that.

    By the way your website doesn't seem to work.


    <font color=red>Spirit of 76</font color=red>
     
  8. solowookie

    solowookie 1/2 ton status

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    OUCH!!!

    man what a bummer! mess up that beautiful k5... [​IMG]

    <font color=blue> Jeff - may the force be with you</font color=blue>
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  9. thatK30guy

    thatK30guy 1 ton status Premium Member

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    I had that happen to me once on my old '81 short bed. [​IMG]

    I was pulling a buddy who was stuck out of clay and was about to give up. I got one last run at backing up and at the end of the stretch on the strap...BANG!! The bottom bolt sheared off, the hook tore the bottom part of the bumper and just stuck out there, like your pic. Needless to say, I was not a happy camper and my buddy did not offer to replace or fix anything. [​IMG]

    I'm not picking my nose...I'm just pointing at my brain!! [​IMG]

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  10. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    Moral of the story....grade 8 bolts and no side load.

    <a target="_blank" href=http://www.geocities.com/bigkern76>http://www.geocities.com/bigkern76</a>
     
  11. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Oh yeah, mine already had the grade 8 bolts. Factory that way, too.
    Its the amount of force of pull that causes the shear of the bolt.

    I'm not picking my nose...I'm just pointing at my brain!! [​IMG]

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  12. K5Junkie

    K5Junkie 1/2 ton status

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    Mine were factory also and the pull was straight on. There was no yanking involved is why i am so surprised it sheared off.

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  13. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    You're Blazer needs to go on a diet, hahaha. I wonder how those military bumpers would hold up?

    <a target="_blank" href=http://www.geocities.com/bigkern76>http://www.geocities.com/bigkern76</a>
     
  14. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Man! I would love to score some of those beefy hooks for those bumpers!

    The CUCV bumpers are simple stock bumpers like any other, but with special brackets and clevis hooks on them.

    I need some of these brackets. I can get the clevis hooks at the hardware store.

    Anybody got some CUCV bumper brackets for these clevis hooks?

    I'm not picking my nose...I'm just pointing at my brain!! [​IMG]

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  15. K5Junkie

    K5Junkie 1/2 ton status

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    I have some bracket, but they are not for sale[​IMG]
    They do not attach to the bumper at all, they attach to the frame with 4 bolts with some kind of plate sandwiched between the bolts. It is a very stout setup. I was planning on soon but i guess i have find a new bumper first.

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  16. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Get some pics posted so we, the DIY's, can make some for ourselves. [​IMG]

    I'm not picking my nose...I'm just pointing at my brain!! [​IMG]

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  17. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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    extrication tips time , ever walk in the mud and lost a rubber boot ? think of the rubber boot effect on yer k5 , now what i have done when stuck in mud is jack the thing up and put somthing under the tires then get towed or attempt an escape . yoinking on it will just bust stuff ....

    WHATS WRONG WITH A 305 ?
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  18. Eric78K5

    Eric78K5 1/2 ton status

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    I've seen several stock hooks give, mostly by the hook itself bending. The only time I've ever seen frame damage is from a guy who tried to pull the front end around out of a mud hole.

    Eric78K5
    K5-Because Size Matters!
     
  19. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    I don't know if they were designed that way but the '81 &amp; up hooks will usually bend/break without ripping the frame. The '80 &amp; older are just a big "J" shaped hook. If the bolts hold -and they are big- the frame is the next thing to give if the truck doesn't move. The '81 &amp; up are sometimes called "saftey hooks" although I would feel safer with a tore up frame horn than a winch hook flying at me. I don't have much faith in the '81 &amp; up hooks.

    Jim '80 GMC & '73 Blazer
    Body by Tellico
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  20. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    Grade 8 bolts have a higher tensile strength than grade 5. Which also means they are less plyable than the grade 5 stuff... therefore, the grade 5 stuff is better for anything that might require the bolt to give some...

    This is the explanation I just got from a local machinist,. if my information is incorrect, someone please let me know.

    <font color=red>GOT MUD???</font color=red>
    My license plate reads:<font color=blue> 8 YR SUV</font color=blue>
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