What style caps are these

Discussion in 'Flatbed Trucking Forum' started by hazzmatt89, Jun 8, 2025 at 8:45 PM.

  1. hazzmatt89

    hazzmatt89 Bobtail Member

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    Looking at a trailer to possibly buy and these are the caps over the hubs in the back, I’m only familiar with the versions where you have a clear cap and a plug you pull out and fill with oil.
    Trailer is a 2015 Fontaine velocity
     

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  3. kwswan

    kwswan Road Train Member

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    Grease filled hub instead of oil.
     
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  4. AModelCat

    AModelCat Road Train Member

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    Probably a grease packed wheel bearing if it uses solid caps like that.
     
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  5. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    It's a grease filled, or semi fluid grease filled, Hendrickson hub it appears
     
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  6. hazzmatt89

    hazzmatt89 Bobtail Member

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    Ok thank you, are those any different bs the other ones is regards to quality? Trailers been sitting a year and went and looked it over today seemed to be in good shape minus tires and air bags look dry rotted with animal nestings all around them
     
  7. North Pole Nightmare

    North Pole Nightmare Heavy Load Member

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    I have a 2023 Fontaine,they use only Chevron synthetic grease.The decals on the trailer say maintenance free for 5 years.
    You're supposed to call Fontaine before you take one of the caps off.You only need to jack the axle up and check if they're spinning smoothly and don't have any play in the bearings.
     
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