Front axle spindle wear, w/photos

JeepdaddyRC · Post by **JeepdaddyRC** » Sun Apr 18, 2021 10:45 am

Doing a steering knuckle service.
The king pin bearings and races are worn and will be replaced.
On disassembly I see the axle spindle has grooving.
What would cause this wear pattern?
Isn't there a void in that space between the wheel bearings?

Post by **jake138** » Sun Apr 18, 2021 5:17 pm

One thing that I love about this forum is how much I learn from other people's projects. Although I cannot say that I know why that scoring exists, I am definitely as curious as you are!

Also, there is a lot of burnt where those races were

Post by **wesk** » Sun Apr 18, 2021 8:35 pm

It is quite probable something jammed there and spun between the bearing race seats or a bearing race disintegrated to the point it almost fit in that space and moved there forcibly. Or it could just be John's answer below!

G740 · Post by **G740** » Wed Apr 21, 2021 4:25 am

It is not uncommon for there to be a rough machined area between the two bearing seat locations. It is not actually "wear" that you are looking at.
John