Grease trailer sleeve coupler

azuerch · Aug 14, 2025

Hello I have a PJ 12ft utility trailer that has a slide style sleeve coupler. It has become increasing difficult to lock/unlock the coupler and I'm not sure how to grease or oil it. The style is like this:

It only slides maybe and inch or so (by design) and there's no want to disassemble it that I can tell to clean and grease it up good. I can spray something like WD40 under the sleeve but I'd like to use something that will stick and last longer but there isn't much of an gap to spray into and it neesd to penetrate fairly deeply. Any recommendations?

Shawn T. W. · Friday at 12:28 PM

Never seize ... Pull it back, add a little ... A little goes a long way!

gstrom99 · Friday at 12:36 PM

WD40 is not a lube. I'd ask/call PJ themselves.

Roadworthy · Friday at 12:53 PM

You could try a motorcycle chain lubricant. There's also lithium grease in a spray can.

WM75Guy · Friday at 12:53 PM

I use spray white lithium grease on my hitches. I also spray the ball every time before hooking up. Less messy than axle grease.

Runner · Friday at 12:54 PM

I would probably use Fluid Film spray lube. Smells awful but sticky and works great.

https://www.napaonline.com/en/p/FFPAS11

bigtiller · Friday at 2:14 PM

liquid wax. Boeshield T-9 Waterproof Lubricant

Amazon.com : Boeshield T-9 Waterproof Lubricant : Sports & Outdoors

www.amazon.com

QRTRHRS · Friday at 4:03 PM

I use graphite spray on my hitch shank and white grease on the ball. While graphite in spray form will rub off, some does remain. I don't know if it would work it's way inside of the slide on your "bulldog" coupler or not?

LouNY · Friday at 4:40 PM

It is most likely a build up of grit and garbage. Brake clean or WD while exercising it, then a powdered graphite to lube it. And grease or oil is going to attract dirt and dust and gum the works up.