Originally Posted by lmpres
The slide bar I am talking about is the bar that locks in the king pin. Mine has developed some movement in it (forward and back). When it is forward, it gets caught and won't let the locking/unlocking bar be pulled to the unlocked position. I am then pushing, pulling lifting, etc for an hour until I can get it to move back. This usually happens when the truck is at a very slight incline and trailer is flat. A lot of campgrounds up here have that.....
If it binds because both the truck and trailer aren't flat, I have my wife move the truck back and forth slightly while holding the trailer brakes locked and I hold the unlock handle through that transition. The slight change will "unload" the pressure of that push and easily allow the pin to unlock.
My handle is slightly bent because of the past owner trying to force it open.
Try this first. It may save you a few bucks.
There have suggested to lube the pins and mechanism while off of the truck.
Bob and Better Half
2007 F-250 PSD, SW, CC, LB, 2WD
2006 TF32SS Cross Terrain Toy Hauler (sold)
Reese 16k slider