Wheel Hub Pin

[Ridger]

I'm posting this for a friend who owns a B7500. He says the rear wheel hub pin on each side keeps breaking allowing the rear wheels to move freely in and out. He sent me some pics which looks like a bolt is used instead of the actual part (63733-17270). Could the use of the bolt instead of the actual part be the problem? Any suggestions/comments are appreciated.

 

[Bee-Positive]

If he's grabbing any available Grade 2 bolt off the shelf then probably the cause. Spend the $$ and get the right part. Make sure the larger bolt behind it is torqued properly and not worn, it "clamps" onto the shaft.

 

[North Idaho Wolfman]

The pin is just an alignment and safety pin, NOT for retention. (yellow)
The actual clamp (retention) is done by the bolt and cotters clamping to the axle.(green)

Put a pin in the hole to get the desired offset then tighten the big bolt to lock the axle in place.

 

[Ridger]

Thanks Wolfman, I'll pass the information along.

 

[chim]

Is it possible he doesn't have those "cotters" installed? (wedge shaped parts in red circles below)

And/or doesn't have the bolt that holds them properly torqued? On my B7500 I had to do a tap/tighten/tap/tighten on those bolts to make the hub stop moving and making noise. I can't find it right now but a long time ago another poster had a loose bolt / hub and described the noise very appropriately as "ERRNT ERRNT ERRNT ERRNT" or something like that as the tractor was driven.