DK40 front bearing failure @ 1300 hours

[JimR]

What was left looked real clean. When it let loose, i was about 100’ from shop. All oil soaked the ground.

Mine looked clean with a slight tint of silver on the top. That has been changed again.

 

[TexasRust]

Five years into ownership and 500 hours on my XR4150H, the my front right wheel bearing came apart and tore up the outer housing. The tractor has a Modern 66TRG grapple on the front end loader and I typically lift loads of logs at the maximum capacity. Since the failure, I replace front wheel bearings every 500 hours. I'm not confident that I can detect failure before it goes catastrophic. I'm currently at 1500 hours and in the middle of replacing the bearings again.

 

[JimR]

Five years into ownership and 500 hours on my XR4150H, the my front right wheel bearing came apart and tore up the outer housing. The tractor has a Modern 66TRG grapple on the front end loader and I typically lift loads of logs at the maximum capacity. Since the failure, I replace front wheel bearings every 500 hours. I'm not confident that I can detect failure before it goes catastrophic. I'm currently at 1500 hours and in the middle of replacing the bearings again.

If the bearings were going the wheel would be loose. Jack it up and see if you can wiggle the wheel up and down on the knuckle. Usually if the bearings are going the wheel seal leaks. In some cases, like with my NX4510, the bearings were tight. The left side seals were shot.

 

[MotorSeven]

So I noticed the old familiar notchy steering the other day out on the pavement. Have been keeping an eye on the axle oil level & checked it again....none in the window. I can't find signs of a leak & it took about 3 quarts to fill it. Any leak in the past was always at the end of the axle behind the hub & I have pulled baling string out from around there which tears the O=ring. Both sides are dry, and there is some minor residue in the center of the axle. I'm going to slide some cardboard under it and see if the leak will reveal itself. Argggggh.......

 

[JimR]

So I noticed the old familiar notchy steering the other day out on the pavement. Have been keeping an eye on the axle oil level & checked it again....none in the window. I can't find signs of a leak & it took about 3 quarts to fill it. Any leak in the past was always at the end of the axle behind the hub & I have pulled baling string out from around there which tears the O=ring. Both sides are dry, and there is some minor residue in the center of the axle. I'm going to slide some cardboard under it and see if the leak will reveal itself. Argggggh.......

You have a big leak if you lost 3 quarts.

 

[murphy1244]

I thought it only holds a quart and a half??

 

[MotorSeven]

You have the deep gear wells on each side, then the hollow axle. I think it was listed @ 7.9 quarts capacity, but I would have to break out the shop manual.

 

[JimR]

I thought it only holds a quart and a half.

It holds a lot more than that.