This might not be good

[Firefighter Kubota]

Just dropped the 7510 at the dealership. While moving the snow today I slowly started to hear a metalic grating sound come from the right rear wheel area...

At first it sounded like crunching ice under the wheel, so I ignored it for about 20 minutes but as I cleared the parking area it was obvious there was something wrong.

The machine performed normally. When I got to the dealership the salesman agreed, something was not right. Still under warranty, so I'll keep my fingers crossed, although it'll be 4-5 days before they can look at it. Tried 2 dealers and both were the same time frame..

Just got my truck back after 4 weeks sitting at the dealership waitng for parts, whole new front differential. seems GM is cutting back on parts stock..


Any ideas on the grating/grinding noise. And yes there is plenty of hydraulic/transmission oil...

Let me know your thought...

 

[kevinj]

Just dropped the 7510 at the dealership. While moving the snow today I slowly started to hear a metalic grating sound come from the right rear wheel area...

At first it sounded like crunching ice under the wheel, so I ignored it for about 20 minutes but as I cleared the parking area it was obvious there was something wrong.

The machine performed normally. When I got to the dealership the salesman agreed, something was not right. Still under warranty, so I'll keep my fingers crossed, although it'll be 4-5 days before they can look at it. Tried 2 dealers and both were the same time frame..

Just got my truck back after 4 weeks sitting at the dealership waitng for parts, whole new front differential. seems GM is cutting back on parts stock..


Any ideas on the grating/grinding noise. And yes there is plenty of hydraulic/transmission oil...

Let me know your thought...

Are you sure that the wheels and hubs are tight?

 

[Firefighter Kubota]

Are you sure that the wheels and hubs are tight?

yeah, checked them too. It is clearly inside the axel or gear case

 

[kevinj]

yeah, checked them too. It is clearly inside the axel or gear case

That don't sound good!!!!!!

Just to be clear.... you did tighten the cross bolt that holds the hub to the axle as well as the wheel bolts.

 

[Firefighter Kubota]

Every thing is tight....

Haven't done any work on the tractor lately..

 

[Firefighter Kubota]

Picking the tractor up tomorrow,

dealer changed the trans/ hydraulic oil found no metal filings,

however..They said the hubs (i'll know tomorro for sure where they are talking about) need to be greased every 60 hrs or so, or you get a metal on metal grinding sound...

yeah its not in the manual. Just one of those things they discovered

 

[teg]

Can you ask your dealer if that is just for the 7510 (or do other models need it too?)

 

[B2400]

I'd be interested to know what they mean by " grease the hubs". My 2400 has the same type of adjustible rear hub and other than tightening the pinch bolt, they've never been "greased" in over 400hrs. Please let us know what this is! Thanks

 

[Firefighter Kubota]

Alright here is the skinny.....

Being saturday only the salesman was in... He does not know if this issue applies to other models but if they have the same design then I'm sure it'll hold true..

They greased the actual shaft where the adjustable wheel hub sits. Remove the hub and lather on some grease.

Doesn't appear to be an actual wear issue, just a creaking between the 2 metal parts. Do I really believe thier diagnosis? Not really, but the noise is gone..So?

Any thoughts?

 

[kevinj]

Doesn't appear to be an actual wear issue, just a creaking between the 2 metal parts. Do I really believe thier diagnosis? Not really, but the noise is gone..So?

Any thoughts?

Re-read post 2.

 

[Ductape]

Sounds about right. Be happy you have the adjustable hubs........ apparently they were too expensive to put on the new tractors.

 

[Firefighter Kubota]

Yeah they were and are tight

 

[mcnitt]

Sorry guys; what are adjustable hubs?

 

[Firefighter Kubota]

Sorry guys; what are adjustable hubs?

some models allow you to move the hubs in or out on the shafts, making the rear wheels wider for stability or narrower if needed

 

[kevinj]

Yeah they were and are tight

I have had them tight and still creak. The wedges get full of dirt and coruption. The only way to get them tight again is as your dealer done. I jack the tractor up, remove the wheel, remove the hub bolt & wedges, clean the parts, coat with never seize, assemble and torque. They will not tighten up properly when dry and dirty. Now retorque them each tractor use for a couple of times and you should be good to go.

 

[rdsaustintx]

I think I buy it.

Ask anybody with an old Toyota truck. They are famous for getting a little dirt in the leaf spring packs and squeaking like CRAZY. The amount of relative motion is microscopic, but it is hard to believe how noisy they can get.

The fix is similar. Take them apart, clean and grease.

Russell in BubbaLand

 

[brandoro]

When I first bought my B7610 I was using the BH a lot and noticed a creaking noise from the rear wheels. When I started checking things with the torque wrench I found the pinch bolt not too tight. Couldn't really say loose but enough to allow it to move with the weight of the BH. Had to retorque a couple of times over the first two or three weeks, they have been good ever since, coming up on four years and 300 hours now. Probably was just working the paint out of the joint when it was new.
If the noise is gone and it is still under warranty I would get as much seat time with the heaviest thing I own on the back and see how it does.