Signs of kingpins worn out?

[allan5oh]

I think my kingpins need to be replaced. It handles very well on smooth pavement, but any type of ruts/grooves it really doesn't do very well. The toe-in is 1/16 inch.

It definitely has some play on the pins, but what can I do to check?

[marcel27208]

i thought only way to check was raise truck slightly off ground and pull/push with a crow bar or something, i had this done this past tuesday

[bob h]

I think my kingpins need to be replaced. It handles very well on smooth pavement, but any type of ruts/grooves it really doesn't do very well. The toe-in is 1/16 inch.

It definitely has some play on the pins, but what can I do to check?

raise the tire clear of the ground. rock the tire in and out.... does it clunk or feel loose?

if it does ; have someone hold the service (foot) brake.... then try to rock the wheel again. if it still feels 'loose' the king pin/bushings is likely the cause. if the play went away when you applied the brakes, the cause is more likely wheel bearings... check the wheel hub for 'sparkly' oil

if you're still uncertain, have someone grasp the top of the tire (with a tire bar if necassary) and attempt to rock it inward and outward. in the mean time, you crouch down at the inboard side of the tire and watch for movement between the steering knuckle and the i-beam

[marcel27208]

I think my kingpins need to be replaced. It handles very well on smooth pavement, but any type of ruts/grooves it really doesn't do very well. The toe-in is 1/16 inch.

It definitely has some play on the pins, but what can I do to check?

raise the tire clear of the ground. rock the tire in and out.... does it clunk or feel loose?

if it does ; have someone hold the service (foot) brake.... then try to rock the wheel again. if it still feels 'loose' the king pin/bushings is likely the cause. if the play went away when you applied the brakes, the cause is more likely wheel bearings... check the wheel hub for 'sparkly' oil

if you're still uncertain, have someone grasp the top of the tire (with a tire bar if necassary) and attempt to rock it inward and outward. in the mean time, you crouch down at the inboard side of the tire and watch for movement between the steering knuckle and the i-beam

oooooooohhhh man if bob h agrees with me then im right!!!!

at least part of the way!

[cumminsM11]

Get them checked and if they are out get them changed otherwise you will be paying for tires. Kingpin set is only about 220$ and up (for my FLD) and 4 hours labour. Better than paying 1000$ for a set of tires every 2000-3000 km because the alignment is out so much. Good luck.