How much does it cost to replace kingpins on a semi truck?
Every king pin on the road will eventually need to be replaced or repaired. That’s the nature of the tremendous forces playing on this pivot point that connects the tractor with the trailer. Replacing this part normally costs somewhere between $1000-$3000 and puts the truck out of service for several days.
How long does take to replace kingpins on a semi truck?
6-8 hours
A kingpin replacement generally takes 6-8 hours. When one of our skilled technicians performs a repair, they will also examine the knuckle eyes for wear.
When should king pins be replaced?
The good news is the kingpins have a life of 750,000 miles, so with good maintenance they would only need to be replaced once during a truck’s lifetime,” said Duane Rasmussen, Instructor, Medium/Heavy Truck Technology, Hennepin Technical College.
How much play is acceptable in king pins?
“When [the steer axle kingpin is] new, they’re going to have about three to four thousandths of an inch of play,” Ayala says. “It’s not a rule, but that’s in general terms. Once it hits the ten thousandths [range of] movement, those tires are going to be wearing out fast.
How do you remove a stuck king pin?
I would move it to one end of its swing and run the air hammer for a few minutes. Then swing it to the other end of its swing–it took a LOT of effort, flood the top w/ more WD40 and apply the air hammer to the king pin trying to force it down. Then repeat.
What are kingpins on a truck?
The kingpin (also king-pin, king pin and k pin) is the main pivot in the steering mechanism of a car or other vehicle. The term is also used to refer to part of a fifth wheel coupling apparatus for a semi and its trailer or other load.
How do I know if my king pins are worn out?
You will notice signs of kingpin and bushing failure from incorrect vehicle alignment, premature and uneven front tire wear, and rough handling. Experiencing these symptoms while driving may result in a shaking cab or steering wheel.