water ballast and bh-90

[hbar]

I read in the bh-90 manual that there is a conflict between water balast and the bh-90. The BH-90 manual states in the pre-operating instructions pg. 6,

IMPORTANT:
While BH-90 backhoe is installed on the tractor, liquid ballast in the rear tires should be removed.

I wonder if there is an english translation error. If the english is correct as I read it, then I must remove the water from my tires when I operate the tractor with the backhoe. Now, why is this? The only "head scratching" output I can gather from this is that the outriggers won't lift my rear wheels off the ground with the backhoe attached and operating. I sure would like to know because I just bought a new tractor with the BH-90 and I am reading the manual before operating as I was told to do and ran across that statement. The 5030HST came to me with the bh-90, fel, and watered wheels and I would have faith the dealer is aware of a conflict if there is in fact one beyond my understanding. Any input/education is needed and tnx.

 

[hbar]

I read in the bh-90 manual that there is a conflict between water balast and the bh-90. The BH-90 manual states in the pre-operating instructions pg. 6,

IMPORTANT:
While BH-90 backhoe is installed on the tractor, liquid ballast in the rear tires should be removed.

I wonder if there is an english translation error. If the english is correct as I read it, then I must remove the water from my tires when I operate the tractor with the backhoe. Now, why is this? The only "head scratching" output I can gather from this is that the outriggers won't lift my rear wheels off the ground with the backhoe attached and operating. I sure would like to know because I just bought a new tractor with the BH-90 and I am reading the manual before operating as I was told to do and ran across that statement. The 5030HST came to me with the bh-90, fel, and watered wheels and I would have faith the dealer is aware of a conflict if there is in fact one beyond my understanding. Any input/education is needed and tnx.

 

[SPYDERLK]

Puzzling. I believe it is an overactive safety concern regarding the back of the tractor being very heavy. This helps backhoeing and general stability, but may increase the possibility of tipping back when doing heavy towing.

 

[SPYDERLK]

Puzzling. I believe it is an overactive safety concern regarding the back of the tractor being very heavy. This helps backhoeing and general stability, but may increase the possibility of tipping back when doing heavy towing.

 

[txdon]

<font color="blue">"I can gather from this is that the outriggers won't lift my rear wheels off the ground with the backhoe attached and operating." </font>

On page 9 of the BH90 manual - placing the stabilizer -, it states that "...one or both rear tires should remain in light contact with the ground. This will give the backhoe the widest possible stance and the lowest center of gravity."

The dealer mentioned this when I bought my L5030 and did not fill the tires.

 

[txdon]

<font color="blue">"I can gather from this is that the outriggers won't lift my rear wheels off the ground with the backhoe attached and operating." </font>

On page 9 of the BH90 manual - placing the stabilizer -, it states that "...one or both rear tires should remain in light contact with the ground. This will give the backhoe the widest possible stance and the lowest center of gravity."

The dealer mentioned this when I bought my L5030 and did not fill the tires.

 

[hbar]

Thank you for the input thus far: The points of light contact of rear wheels and tipping over. I am next going to varify the load capacity of the stabilizers and varify the loaded weight of the tires and see what gives in those two numbers. The 5030 with fel, bh-90 and watered wheels is one heavy monster. I am guessing close to 8000#. the water weight on the axles is mute. Tipping about the axis of the axle is mute. Saftey concerns seem to come the closest to an explaination. I almost wish there was a reason published along side the warning, but that would take the fun out it. Direct question: the extra 500# in each tire from the water ballast; is that enough to overload the stabilizer for the respective side? This, again, points to a safety issue in as much as tipping side to side if, as was mention, and also, as was mentioned, the tires are NOT lightly resting on the gound. Almost starting to make sence from both your points of view.

 

[hbar]

Thank you for the input thus far: The points of light contact of rear wheels and tipping over. I am next going to varify the load capacity of the stabilizers and varify the loaded weight of the tires and see what gives in those two numbers. The 5030 with fel, bh-90 and watered wheels is one heavy monster. I am guessing close to 8000#. the water weight on the axles is mute. Tipping about the axis of the axle is mute. Saftey concerns seem to come the closest to an explaination. I almost wish there was a reason published along side the warning, but that would take the fun out it. Direct question: the extra 500# in each tire from the water ballast; is that enough to overload the stabilizer for the respective side? This, again, points to a safety issue in as much as tipping side to side if, as was mention, and also, as was mentioned, the tires are NOT lightly resting on the gound. Almost starting to make sence from both your points of view.

 

[JackIL]

One possible explanation is overloading the tires when the backhoe is attached.

JackIL

 

[JackIL]

One possible explanation is overloading the tires when the backhoe is attached.

JackIL

 

[5030]

The reason why Kubota wants air only in the rear tires is the hoe and combined with the outboard weight of the loaded tires places undue stress on the axle case.

If you triangulate the stress imposed by the hoe as it operates in it's digging mode, that stress is directly absorbed by the axle/transmission case. I would imagine Kubota feels that the added burden of loaded tires could be enough to fracture the case in the right circumstances. If you, indeed, did fracture the case you might have a warranty issue with Kubota.

If indeed, with loaded tires and the BH90 attached, you do weigh 8000 pounds, well, that's a lot of weight for a non-suspended frame and case to absorb in a shock load situation.

I do presume that by "watered" you mean loaded. The only watered tires I am familiar with is the ones the dog uses on my pickup truck. /forums/images/graemlins/grin.gif

 

[5030]

The reason why Kubota wants air only in the rear tires is the hoe and combined with the outboard weight of the loaded tires places undue stress on the axle case.

If you triangulate the stress imposed by the hoe as it operates in it's digging mode, that stress is directly absorbed by the axle/transmission case. I would imagine Kubota feels that the added burden of loaded tires could be enough to fracture the case in the right circumstances. If you, indeed, did fracture the case you might have a warranty issue with Kubota.

If indeed, with loaded tires and the BH90 attached, you do weigh 8000 pounds, well, that's a lot of weight for a non-suspended frame and case to absorb in a shock load situation.

I do presume that by "watered" you mean loaded. The only watered tires I am familiar with is the ones the dog uses on my pickup truck. /forums/images/graemlins/grin.gif

 

[hbar]

I don't understand how the tires would overload. However, the response that seems to make most sense to me is from don and i gather that the stabilizers cannot configure the tractor safely with the added load of water ballast in the rear tires. I have learned something and I hope to approach the tractor dealer with this question and repost my findings.

my tractor buying process hinged largely on what I learned from all who write on this forum and I thank you. Sure got hooked on Kubta I'll tell you!

 

[hbar]

I don't understand how the tires would overload. However, the response that seems to make most sense to me is from don and i gather that the stabilizers cannot configure the tractor safely with the added load of water ballast in the rear tires. I have learned something and I hope to approach the tractor dealer with this question and repost my findings.

my tractor buying process hinged largely on what I learned from all who write on this forum and I thank you. Sure got hooked on Kubta I'll tell you!

 

[hbar]

BINGO! Cracking transmission cases. I think that is very interesting. ... I just went and looked. The subframe does indeed sap some structural integrity directly off the transmission case. Now, am I on target? and thank you!

 

[hbar]

BINGO! Cracking transmission cases. I think that is very interesting. ... I just went and looked. The subframe does indeed sap some structural integrity directly off the transmission case. Now, am I on target? and thank you!

 

[hbar]

My next problem is getting the water out; what kind of trouble is that going to be? A newbe that I am, the learning curve is a steep grade. My first guess is to put the beast on jackstands and drain away. I guess I'll need a fine tube to syphon the water below the level of the valve stem. At this point I wish I had done more research and as always 20-20 hind sight prevails. Are wheel weights the correct way to deal with this issue? Once the backhoe is removed, is the box scraper going to be enough counter weight for the fel? Anyway, if I remember to re-air the tires after draining the water and before removing the jack stands, I will be good!

 

[hbar]

My next problem is getting the water out; what kind of trouble is that going to be? A newbe that I am, the learning curve is a steep grade. My first guess is to put the beast on jackstands and drain away. I guess I'll need a fine tube to syphon the water below the level of the valve stem. At this point I wish I had done more research and as always 20-20 hind sight prevails. Are wheel weights the correct way to deal with this issue? Once the backhoe is removed, is the box scraper going to be enough counter weight for the fel? Anyway, if I remember to re-air the tires after draining the water and before removing the jack stands, I will be good!

 

[bugstruck]

Frankly I wouldn't worry about it.... for long. I have the same configuration as yours on an L3130. I need the stabilizers and the hoe working togeather to get the loaded tires well clear of the ground. Sometimes you may want to do that. I do. I read that tire loading restriction after my dealer loaded mine at purchase time. Decided I need loaded tires no matter, so after a few hours agonozing, I stopped worrying about it. Called them to check on it and they do it all the time. No small dealer either. Everything is fine through 60+ hours. Your not going to have the balance you might want without loaded tires and the BH off. That loader you have is even more stout than mine. The biggest concern I have is the # and integrity of wheel to rim bolts. Kubota's a little light in that area IMO and mine creak with the BH on. I'm already a fraction past the torque spec on them too.

 

[bugstruck]

Frankly I wouldn't worry about it.... for long. I have the same configuration as yours on an L3130. I need the stabilizers and the hoe working togeather to get the loaded tires well clear of the ground. Sometimes you may want to do that. I do. I read that tire loading restriction after my dealer loaded mine at purchase time. Decided I need loaded tires no matter, so after a few hours agonozing, I stopped worrying about it. Called them to check on it and they do it all the time. No small dealer either. Everything is fine through 60+ hours. Your not going to have the balance you might want without loaded tires and the BH off. That loader you have is even more stout than mine. The biggest concern I have is the # and integrity of wheel to rim bolts. Kubota's a little light in that area IMO and mine creak with the BH on. I'm already a fraction past the torque spec on them too.