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Starter bolt torque

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Dino soar, Oct 2, 2019.

  1. Oct 2, 2019 #1
    Dino soar

    Dino soar Road Train Member

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    Does anyone know what the starter bolts should actually be torqued at?

    These are the bolts that take a 5/8 12 point socket.
     
    Dino soar, Oct 2, 2019
    Dino soar, Oct 2, 2019
    #1
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  3. Oct 2, 2019 #2
    Goodysnap

    Goodysnap Road Train Member

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    5/8-11 thread. 159 ftlbs lubed - 212 ftlbs dry. Give or take. Aluminum fly housing I prefer a dab of antisieze or paste as they do lock up with age
     
    Last edited: Oct 2, 2019
    Goodysnap, Oct 2, 2019
    Goodysnap, Oct 2, 2019
    #2
    pushbroom, stayinback and Dino soar Thank this.
  4. Oct 5, 2019 #3
    snowwy

    snowwy Road Train Member

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    Tighten em all down so the starter don't fall off. They're pretty big bolts. Tough to over tighten and break.

    Everybody asks about torque. On all bolts in a vehicle. Even the car forums ask.

    I gaurantee. Shops aren't using torque wrenches on every bolt they install. Unless it's the cylinder head.
     
    snowwy, Oct 5, 2019
    snowwy, Oct 5, 2019
    #3
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  5. Oct 5, 2019 #4
    Dino soar

    Dino soar Road Train Member

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    This is true. But shops that do this work all the time they know about how tight their gun hammers they know about how tight to make this and make that.

    I generally try to torque whatever I can so that I know that it's tight enough and the bolt is not overstretched.

    Sometimes you can't torque it. I can't fit my torque wrench in to torque at least one or two of those starter bolts so I'll do the best that I can.

    But it is a good idea to at least know about what they should be torqued to anyway.
     
    Dino soar, Oct 5, 2019
    Dino soar, Oct 5, 2019
    #4
    spsauerland, Blowcanner1975 and Goodysnap Thank this.
  7. Oct 5, 2019 #5
    Cattleman84

    Cattleman84 Road Train Member

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    German Spec... T.I.T.

    Take it until it breaks, then back it off 1/4 turn... Lol
     
    Cattleman84, Oct 5, 2019
    Cattleman84, Oct 5, 2019
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  8. Oct 5, 2019 #6
    Luwi67

    Luwi67 Heavy Load Member

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    The bolt won't break but, they are easy to over tighten and pull the threads right out of the aluminum housing they are threaded into. Be careful.
     
    Luwi67, Oct 5, 2019
    Luwi67, Oct 5, 2019
    #6
  9. Oct 5, 2019 #7
    snowwy

    snowwy Road Train Member

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    So. Apparently it pays to be a retired mechanic.

    I never worry about torque unless torque is called for. Like shops.

    No break. No stripping of threads.

    We just tighten em down and not worry about it.
    And tighten depends on size of bolts
     
    snowwy, Oct 5, 2019
    snowwy, Oct 5, 2019
    #7
  10. Oct 5, 2019 #8
    spsauerland

    spsauerland Road Train Member

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    Out of 90's Freightliner Service Manual KIMG2095.JPG
     
    spsauerland, Oct 5, 2019
    spsauerland, Oct 5, 2019
    #8
    pushbroom Thanks this.
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