Backhoe and Filled tires

[Plas62]

I am looking at buying a Kubota B2650 with FEL and Backhoe. I could not find a pdf owners manual on the BH77 BH that it would come with, buy did run a across a BH75 manual that stated that the tractor tires should not be filled if a BH is attached.

Is this correct? Is there a problem with having filled tires on a tractor with a BH?

 

[oldpilgrim]

Is this correct? Is there a problem with having filled tires on a tractor with a BH?

no.


I have both.

 

[bdog]

I think they say that because many people use the backhoe to lift and reposition the tractor when digging. They think loaded tires make the tractor too heavy to lift and may cause some sort of damage. I don't think it will be an issue.

 

[buickanddeere]

Loaded tires have less give cushion and shock absorption than air filled tires.

 

[Deezl Smoke]

I am looking at buying a Kubota B2650 with FEL and Backhoe. I could not find a pdf owners manual on the BH77 BH that it would come with, buy did run a across a BH75 manual that stated that the tractor tires should not be filled if a BH is attached.

Is this correct? Is there a problem with having filled tires on a tractor with a BH?

Email the manufacturer and ask why not.

I have a B2650 with bh77 and fel. Love it. I have over size tires and have switched my bh controls to "cat" pattern as they come original with the "john deere" pattern. I have not filled the tires and now that I have used the loader a fair bit without the backhoe attached, I doubt that I will fill them as I need so little weight on the back to stall the loader. My Landpride 60" mower is more than enough.

 

[gsganzer]

I have a L3800 with a BH77 and loaded tires. I can't imagine what the issue would be with having both as the weight in the tires isn't directly supported by the axle/axle bearings. Interested to hear why the mfr would say to avoid it.

 

[jenkinsph]

I have a L3800 with a BH77 and loaded tires. I can't imagine what the issue would be with having both as the weight in the tires isn't directly supported by the axle/axle bearings. Interested to hear why the mfr would say to avoid it.

If you do not use the hoe to reposition the rear of the tractor and never dig downwards with the bucket you are correct. If you do reposition with the hoe or put high loads on the backhoe to break out large rocks then you are incorrect. Anytime the backhoe is lifting the rear of the tractor up the weighted rear tires are loading the axle/axle bearings, sub frame and other related parts.

Check with the manufacturer and follow their recommendations.

 

[SteveM70]

I don't own a B series tractor but I can't see this statement in the manual being true for any other reason than the assumption that the backhoe itself adds enough weight to the rear of the tractor so no need to fill the rears. "IF" it turns out for some reason there's a heightened chance of mechanical failure with this combination of backhoe and loaded rears that would be a big inconvenience, for me at least.

Not a B but I did have an L series with loaded rears that I did lots of tough digging with. No problems.
It had the BH76 backhoe.

 

[txdon]

I have the Kubota BH90 backhoe and the manual says the same thing, no loaded tires with the backhoe on.

 

[gwdixon]

The only thing I can think of is that the loaded rears would add to the digging force and may break something on the mast.

The mast will lift the tractor which would provide a measure of safety, or relief, from something getting bent or broken.

Somehow I don't understand how the rear axle/bearing can be loaded when the tires are off the ground and lifted on the outriggers. ???

My advice would be avoid a backhoe that requires unloaded rears. It would be a deal killer for me. A different choice may be made better and beefier. However, Kubota does seem to overdo it on caution.

Oh, and my L48 has loaded rears that require the mast to be used to extend the outriggers to full length. I have also repositioned the BH using the mast and lifting the whole rear quite often when digging out stumps.

 

[dickfoster]

I am looking at buying a Kubota B2650 with FEL and Backhoe. I could not find a pdf owners manual on the BH77 BH that it would come with, buy did run a across a BH75 manual that stated that the tractor tires should not be filled if a BH is attached.

Is this correct? Is there a problem with having filled tires on a tractor with a BH?

I have a Mahindra and my backhoe manual says the same thing. However the dealer filled my rear tires on their own and the tractor was delivered with the hoe. So far it's doesn't seem to have any adverse effect.

 

[buickanddeere]

The manufacture could be concerned with the wheel ballast providing extra traction . There maybe an increased tendency to break a loader frame weld or twist off drive train components ?

 

[txdon]

It might be that the majority of the weight should be on the stabilizers which requires the weight to be mostly taken off the back tires as the manual says for operating the BH.

 

[Ken Mac]

I have not seen that in my manual, but that certainly doesn't mean it's not there. My dealer suggested filling the rears on my B26 and did so at no charge. He apparently doesn't think there's an issue with filled tires on a BH.

 

[SteveM70]

Would be interesting to know the reason for this. I hope someone with knowledge posts.

 

[bdog]

I am pretty sure we have the reason. Normally loaded tires are on the ground and the weight of the loaded tires is resting directly on the ground. Without a backhoe I don't see how one would really ever lift the rear tires off the ground. With a backhoe people often lift a tractor to move it around with the backhoe. The added weight of loaded tires puts a lot more stress on all kinds of components on the tractor and backhoe assembly.

 

[GManBart]

I have not seen that in my manual, but that certainly doesn't mean it's not there. My dealer suggested filling the rears on my B26 and did so at no charge. He apparently doesn't think there's an issue with filled tires on a B26.

Fixed it for you. Just because they filled the tires on a B26 doesn't mean they would do so on a different model. Further, your B26 is an actual TLB intended for much more demanding BH use.

 

[radioman]

thank you guys .. finally someone wonders the exact same thing as me. My BX kubota says the SAME thing . dont use filled rears with BH. I was like WHA?! apparently kubota is the ONLY manufacturer that states that and i'm calling their bluff. the speculation of outriggers, stress on axles blah blah blah makes no sense to me. If a tractor cant handle the stress with loaded rears driving around pulling something hard then how can it handle less stress just sitting there in air with outriggers all the way down?!

 

[jenkinsph]

thank you guys .. finally someone wonders the exact same thing as me. My BX kubota says the SAME thing . dont use filled rears with BH. I was like WHA?! apparently kubota is the ONLY manufacturer that states that and i'm calling their bluff. the speculation of outriggers, stress on axles blah blah blah makes no sense to me. If a tractor cant handle the stress with loaded rears driving around pulling something hard then how can it handle less stress just sitting there in air with outriggers all the way down?!

Kubota is not alone in this, my Deere 110tlb also states in the manual not to load the rear tires for backhoe use.

The added weight of about 1,000 lbs. on mine would make crossing over a ditch much more difficult and the weight is not needed. It would also make the rear stabilizers sink in more on soft ditch banks and put more stress on the frame. For backhoe use the extra weight is not needed.

With the backhoe removed and using with the three point hitch it would be nice to have filled tires for increased traction but it is what it is.

I solved this problem by buying the 4520 and use it for my 3 point equipment and leave the backhoe on the 110 almost all the time.

 

[GManBart]

thank you guys .. finally someone wonders the exact same thing as me. My BX kubota says the SAME thing . dont use filled rears with BH. I was like WHA?! apparently kubota is the ONLY manufacturer that states that and i'm calling their bluff. the speculation of outriggers, stress on axles blah blah blah makes no sense to me. If a tractor cant handle the stress with loaded rears driving around pulling something hard then how can it handle less stress just sitting there in air with outriggers all the way down?!

You may have missed that before you posted this, we had someone saying their Mahindra manual claims the same thing, and now Jenkinsph says his Deere says the same thing.