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B7800 4X4


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#1 BNK OFFLINE  

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Posted November 27, 2015 - 09:19 AM

At work we use a B7800 with a 72" mid mount mower and has logged 997 hrs. The state purchased it new for our facility. Always maintained properly. We are now starting to see failure in the mowing deck mounting hardware, breaks in the material not the welds. First was one of the lifting rods/QA were the clevis pin is used (there are two, one on each side of the tractor...one failed). Then recently on the other side of the tractor the bracket that bolts to the tractor it failed. This brkt supports the lifting/lowering of the deck in conjunction with the lift rod. And last failure was the adjustable seat guides,again material failure. Anyone else seeing material failure with a B series tractor(s)? Or any other series....
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#2 BNK OFFLINE  

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Posted November 27, 2015 - 10:19 AM

Here is a few pics of the repairs of the mounting brkt I did at my shop on my time. I never did take any pics of the lift rod repair. Also new seat and seat adjuster tracks I installed.

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#3 chieffan ONLINE  

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Posted November 27, 2015 - 10:47 AM

Looks like a prime example of Chinese steel.  We send over a ton of scrap iron and get back 1-1/4 ton of merchandise due to all the dirt they throw in to stretch the material.


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#4 Diesel1050 ONLINE  

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Posted November 27, 2015 - 11:17 AM

They're Japanese built...
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#5 glgrumpy ONLINE  

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Posted November 27, 2015 - 02:37 PM

Jap, still mostly imported scrap, they just do better job of making it maybe? or maybe Not?  OR, maybe they are buying the Chinese crap now, cause it is closer?  Can't we just blame the "Engineering" of the part, not the steel?  Look how engines are made. Used to be full castings of steel or alum. NOW, they are webbed areas all over where used to be solid, to save metal and weight and costs. Believe it or not, when one cent is saved on a part, the company's are happier.  Cost of a new or diff hole, a bolt that can be omitted, sticker to reduce or remove, any stupid thing to be cheaper, even by the pennies.


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#6 BNK OFFLINE  

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Posted November 27, 2015 - 09:04 PM

It's still a nice machine and sips fuel mowing a 15 acre tract weekly during season. No issues with the gearbox or the mowing deck. No issues with the hydro or the power plant. Very thin gauge sheet metal I.E. fender pan, hood & side covers. And the paint seems to be holding up well, tractor is stored inside when not in use.




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