Forum Discussion

car2900's avatar
car2900
Explorer
Jun 11, 2013

Lube plate for Trailair 5th. wheel pin?

I have always used a 10" diameter lube plate on all my standard Lippert pins. I just got a Trailair Air Ride kinpin and the plate around the pin looks a lot larger that the standard pins, should I go to a 12" lube plate on the Trailair? The plate on the Trailair hits the hitch head and scrapes it a couple of inches before it actually starts riding onthe 10" lube plate. I have a B&W hitch.

18 Replies

  • I was not able to latch jaws with the skid plate in place . I even ordered the 1/8" plate.
    However I learned of Slip Plate which is a spray designed to coat things and reduce friction.
    Works great. I strongly recommend it in lieu of a friction disk

    Slip Plate
  • The lube plate works better if it is 1/8" thick on a B&W because the jaws are so thick it makes it hard to tell when the weight has come off the hitch so you can pull away.
  • Maybe Alabama has stock in the company that makes WD-40. One would think a grease would work better than WD-40, though. Cheaper to use a lube plate.

    Car2900, if you raise your fiver up another 2" or 3" before backing onto the kingpin, the lube plate won't hit the hitchhead.

    Traveler, why does your lube plate have to be thinner than a normal one?

    The scrapes on the hitchhead are probably caused by dirt or sand that gets on there when you're unhitched. We get them, too, and have always used a lube plate.
  • AlabamaTraveler wrote:
    I have had two 5ers over the past 11 years. I have never used a lube plate. I spray with WD-40 each time I hitch up. Just sayin'.............


    You must not tow very much.
  • I have had two 5ers over the past 11 years. I have never used a lube plate. I spray with WD-40 each time I hitch up. Just sayin'.............
  • I don't think it really matters what size the lube plate is as long as it covers the kingpin plate completely all the way around.
  • I have the same pin box and hitch. I use the Hensley 1/8" thick disk, it makes un hitching easier. The B&W jaws are 1 1/8" thick and with a 1/4" plate there is very little space to see when the weight has been removed so you can unhook.

    Not sure why you are getting scrapes.

    Do not have the kingpin ride up on the hitch set the kingpin so the bottom is the same height as the top of the hitch and back into the hitch and lock the handle closed.
  • We had a 2008 fiver with a Trailair and at that time they suggested we use a 12" lube plate, in fact I still have one in my garage. The hitch I use now calles for a 10" plate but it needs to be thinner than standard so I still need to order then from the factory.