I hear a crack

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Mr Bob, Oct 4, 2023.

  1. Mr Bob

    Mr Bob Light Load Member

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    Doing rear hub seals, tear it down and whack the spindle with a hammer. Its not ringing like it should. Took off the seal wear ring, still no ring. I cant see the crack and it sounds like it wants to ring but cant. Could it be my imagination?
     
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  3. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Is this SOP when doing seals?
     
  4. Mr Bob

    Mr Bob Light Load Member

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    for me it is.
     
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  5. 062

    062 Road Train Member

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    Never heard of that, but I do tap the drums when I adjust brakes.
     
  6. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    What does it tell you?
     
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  7. Goodysnap

    Goodysnap Road Train Member

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    Put expansion plugs in the ends and air test it with soap and water.
     
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  8. Mr Bob

    Mr Bob Light Load Member

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    it should ring loud and clear. clunk means its cracked. im right between the two.
     
    Bean Jr. Thanks this.
  9. Mr Bob

    Mr Bob Light Load Member

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    12 psi no leak.
     
  10. Goodysnap

    Goodysnap Road Train Member

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    Put it back together.

    I have never based the integrity of an axle tube/ housing by the ring of a hammer.

    But I could imagine that different housings may sound different. Never tried it.
     
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