Using Filled tires with a BH92 Backhoe

[All In A Days Work]

I just purchased a BH92 for my L4701. In the operators manual it states " While BH92 backhoe is installed on the tractor, liquid ballast in the rear tires should be removed". That's a problem as I have my tires filled. I really don't want to remove the beat juice from the tires. There is no explanation in the manual as to why they recommend that.

My thought is the hydraulics in the stabilizers are not designed for that much weight, and it is print to relieve the company of any sort of liability should they fail. That's just a wild arse guess.

So, what's the deal?

Tim

 

[Brown Dog]

I’d say you answered your own questions.

All of that weight will cost you big time HP like pulling hills & harder on the clutch.

Id be super easy on clutch & run a gear lower AND Leave the tires fluid filled.

You may have to run a lil more pressure in the tires if sidewalls bulge out down at the ground.

Fluid filled tires on tractors under 100hp robs power pretty bad.

I’ve ran all 4 fluid filled in 7 tractors for 25+ years.

 

[mikester]

My thought is the hydraulics in the stabilizers are not designed for that much weight, and it is print to relieve the company of any sort of liability should they fail. That's just a wild arse guess.

So, what's the deal?

Tim

Yup. You break it, you bought it. Don't let the door hit you on the way out.

 

[All In A Days Work]

Thanks guys, I appreciate your input.

 

[Doug Vee]

Another thought I have read on this site about this subject, is that the ROPS is not designed to resist the load of both the backhoe and fluid filled tires in the event of a rollover. My L48 manual indicates the same- remove fluid from tires before mounting backhoe.

 

[buckeyefarmer]

Mine came from dealer with filled tires and BH92 on the back. No problems in 10 yrs. Guess we missed the memo.

 

[number two]

Doug Vee has it correct.
Good Luck!

 

[JWR]

I’d say you answered your own questions.

All of that weight will cost you big time HP like pulling hills & harder on the clutch.

Id be super easy on clutch & run a gear lower AND Leave the tires fluid filled.

You may have to run a lil more pressure in the tires if sidewalls bulge out down at the ground.

Fluid filled tires on tractors under 100hp robs power pretty bad.

I’ve ran all 4 fluid filled in 7 tractors for 25+ years.

No disrespect Brown Dog but I disagree. I run fluid filled tires on an 81HP MF 2660 since 2011. Never ever felt that I had any lack of power. The fluid is NOT robbing power at all and certainly not 'pretty bad.' Before that I ran a JD4800 for 10 years with fluid in the tires. Glad I did. Never any lack of power issue. Your verbiage seems to try to vindicate use of fluid in the tires only if we have adequately large 100 hp machines like your Deeres. Nonsense. Essentially all AG tractors are made to pull and handle heavy loads ... they happen to be tractors ... for that purpose. If I ever had a deficit with ANY tractor it was traction, not power, and fluid in tires creates traction. Harder on the clutch? Oh good grief. I simply disagree with all that stuff.

 

[Brown Dog]

No disrespect Brown Dog but I disagree. I run fluid filled tires on an 81HP MF 2660 since 2011. Never ever felt that I had any lack of power. The fluid is NOT robbing power at all and certainly not 'pretty bad.' Before that I ran a JD4800 for 10 years with fluid in the tires. Glad I did. Never any lack of power issue …

I’m SAYING it DEFINITELY robs power bad pulling hills in Higher Gears.
Like bush hogging & traveling Up HILLS.

You’re not going to notice it at all on flat ground OR in low range.

Dry Clutch tractors would heat the clutch way more starting off on hills being heavier.

I love fluid filled & certainly encourage it.
All 3 of my current tractors has all 4 fluid filled 90%

I even have both my 31hp Zero Mowers fluid filled for traction because I have steep banks & hills.

It definitely robs power pulling hills & way worse in thick grass.

So yes it robs HP in my applications.

 

[BCLoco]

Another thought I have read on this site about this subject, is that the ROPS is not designed to resist the load of both the backhoe and fluid filled tires in the event of a rollover. My L48 manual indicates the same- remove fluid from tires before mounting backhoe.

I'm not sure on the reason either, but I'm not sure how this can be right. The max lift on the 3ph is 2300+ pounds. This surely outweighs the backhoe. When they design the ROPS, they have to take in a lot of factors, including the weight of any implement attached during the rollover. If the ROPS can support a 2300 pound implement in a rollover, surely it can support the backhoe.

I'm suspicious that this does have to do with the stabilizers. Or maybe it's related to how the backhoe connects to the tractor. Is it possible that the connection design is strong some ways, weak in others? Maybe the extra 800 or so pounds on the tractor back end puts strain in the wrong places where the backhoe connects.