B2410 Squeak from 4wd Prop Shaft When Cold

[NoJacketRequired]

2600 hour B2410 on turf tires. The tractor, when cold, exhibits a "squeak squeak squeak" from under the front end of the tractor when it's cold. This is absolutely linked to driveline as it is only heard when the tractor is in motion, whether 2wd or 4wd and the frequency of squeak is proportional to speed over the ground.

I'm trying to figure out where this sound is coming from and whether it's something I just live with or actively pursue fixing. I've had a similar (but not the same) sound in a B7510 where the prop shaft cover was dinged and touched the prop shaft - that sound didn't go away as the tractor warmed up. In the case of the B2410 the sound goes away after two or three minutes of driving.

Oil level in the front differential/axle is just fine and there are no leaks there.

The tractor is currently fitted with front mount blower and rear-mount scraper blade but this has no bearing on the driveline sound as the same sound was in evidence when only the MMM was fitted.

Thanks for any good tips or suggestions you might be able to provide.

 

[freewheel3]

Jack the front end up and give the wheels a spin, see if you can see/hear/feel anything. A repetitive squeak has got to be coming from ether your wheels or your front prop shaft somewhere.
Check for cracks on your rims or loose lugnuts, because either can cause a squeak. Look for marks on the inside of the rims for signs of something rubbing.
It could also be the prop shaft rubbing inside the tube just lightly enough that it clears when the tube warms up?

 

[NoJacketRequired]

Thanks for the good ideas.

I should have mentioned this squeek is present when the tractor is jacked up and the front wheels are spun by hand. I'm pretty sure the sound is coming from the prop shaft or its cover, but for the life of me I can't localize it closer than that.

 

[Dwarner]

I had a similar sound on my B7610 a search suggested to reposition the front driveshaft cover. Turns out the driveshaft cover was rubbing on the driveshaft. Just loosen the 2 clamps and give it a try.

 

[NoJacketRequired]

The more I think about it the more I think it's just the driveshaft cover... I'll be taking advantage of your advice as soon as things here warm up a few degrees.