Abnormal inner tire wear Why?

[champ223]

He’s talking about the trailing arm, not the spindle.

you are correct cat

[leobass]

this happened to mine also. I easily could’ve lost one wheel and brake assembly that’s how loose one of the spindle arms was but all 4 were loose. I could wiggle every wheel easily and the really loose one did have inner tire wear. One bolt holds the entire wheel assembly to the axle. It’s now on the yearly maintenance schedule to remove wheels and torque that bolt on every wheel

Doesn't the cotter pin hold the castle nut in place where it was tighten and are you saying that that castle nut is to be tightened to 150lbs?

[CatFan]

Doesn't the cotter pin hold the castle nut in place where it was tighten and are you saying that that castle nut is to be tightened to 150lbs?

Talking about the trailing arm, not the spindle.

[Bobby8]

I guess there has been an issue with the torsion arm bolts as BassCat is recommending changing these bolts from the grade 5 bolts supplied by Dexter UFP to grade 8 bolts. Grade 5 has 3 hash marks on the top and grade 8 has 6. I just replaced
mine and yes, the torque on these is 150 ft lbs.