Holland fifth wheel play in jaws

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by montrose818, Aug 12, 2019.

  1. montrose818

    montrose818 Light Load Member

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    Apr 9, 2018
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    Hello. I havr a holland fifth wheel and the problem there is play in it. I observed it withb someone tugging it back/fourth and the locking jaws open and close about 1/4". The kingpin measures a hair under 2" and my other truck doesnt have any play (single locking jaw). The adjustment bolt in the back doesnt seem to make any difference.

    The shop tested it with a kingpin mounted to their forklift arm and couldnt replicate it, but it does this with a trailer, creating close to 1/2" play front to back. I have not taken a trailer out with this fifth wheel and will not until thisbis fixed.

    Thank you for any input.
     
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  3. Bean Jr.

    Bean Jr. Road Train Member

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    Same trailer? Does yours have the bolt in the front of the fifth wheel?
     
  4. 6wheeler

    6wheeler Road Train Member

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    I have the same problem. I'm not worried about.
     
  5. montrose818

    montrose818 Light Load Member

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    Yes bolt in front, but adjusting it does nothing. Same trailer. I dont want to drive it like that and risk dropping it. I also feel it will wear out the kingpin much faster.
     
  6. Goodysnap

    Goodysnap Road Train Member

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    How did you adjust it?

    If you adjusted it per Holland procedure and it still has slop its overhaul or new plate time.
     
    Bean Jr. Thanks this.
  7. Bean Jr.

    Bean Jr. Road Train Member

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    If it's hooked to the same trailer, and it won't do it when the shop tries it, your king pin could be worn.
     
  8. montrose818

    montrose818 Light Load Member

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    Apr 9, 2018
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    I measured my kingpin from different angles, its maybe a hair under 2", but there is 1/2" slop front to back. My other truck (single locking jaw) has no play with the same trailer. The shop that installed it is going to look for another fifth wheel to replcce it with, so i am hoping i wont have this issue then
     
  9. RustyBolt

    RustyBolt Road Train Member

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    Buy new. Otherwise, you may be doing it all again in a month or 10.
     
  10. 6wheeler

    6wheeler Road Train Member

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    A rebuild kit is cheap and easy to do. Amazon even has some of them
     
  11. Working2party

    Working2party Medium Load Member

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    If your working with the FW-35 plate, and you have that much slip, I usually back the adjust bolt out till the washer underneath has @1/8 of gap. Set the trailer brakes, release the 5th wheel Jaws, pull forward @6” ( not much more) and then back-back into it. You’ll want it hit, you can hit too hard, but you can back in to soft. If the gap under the adjusting nut washer has disappeared and there’s still slop, repeat the steps. If the gap is the same, either you didn’t hit hard enough to close the jaws past the wear spot or your let it go to long and it has worn to much.

    My trucks run in severe conditions. I’ve put Jaw kits in multiple Holland FW-35 plates. And they will last past the time we sell them.
     
    Bean Jr. Thanks this.
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