kingpin lube

[lrutigliano]

I have a pullrite 16k hitch. The owners manual states to use wd40 on the kingpin before every trip. Should I use this or grease ?? Starting to see a little wear on the kingpin after 7yrs of wd40 usage.
Thanks.

[jimandlaurie]

We went with a slip plate, it has worked fine for the past year and no worries about getting grease where I don't want it. I get enough of that as an OTR driver already.

[glazier]

Slip Plate is the only way to go on the pin and jaws. I use it on the socket of my B&W it makes getting the hitch back out much easier. Tractor Supply sells a graphite paint that is exactly like Slip Plate brand, color is a little different though (darker grey).

[kennethwooster]

Cleaned the king pin last night and started spraying slip plate on king pin and inside of hitch jaws. This will work especially if it works on Super Glide rails. I know it will need to be refreshed before every trip. I'll pull 400 miles Tuesday. I know it will be fine, but still interested how it will look after a days pull.

[pcm1959]

I use nothing Slip Plate graphite dry lube on any areas that are exposed to water and wear that are sensitive to dirt. Great stuff! Phillip
http://slipplate.com/index.php?main_page=product_info&cPath=1&products_id=4

[Allworth]

"a little wear after seven years"??? You are probably OK!

[Old-Biscuit]

Although the 'WD' stands for 'water displacment' WD40 does contain lubricants it also contains anti-corrosion agents and ingredients for penetration and soil removal.

But doesn't last long....hence the 'spray it on before each trip'

I prefer Slip Plate.
I give my hitch an occasional spray on all pivot points and any place where there is metal to metal contact.

King pin....I wipe a thin coat of heavy grease just on contact surface

I also use a Lube Plate on bottom of pin box.

[kennethwooster]

I had a 18k Pullright for several years . Grease is fine but don't go heavy. It tends to work down into hitch and makes miss. I really think you could use slip plate. I just got a F350 DRW with pucket hitch ready. We installed a B&W. Im going to clean king pin up really good and spray itand hitch jaws with slip plate. Should work and wont attract dirt.