I have both the 300U and the 340U here. They are very different tractors, 2 different generations. The engines will not swap. The power steering does seem to be interchangable, but the hydraulics systems are different, so you may be missing critical parts.
As a loader tractor, I find the 340 to be the better, but it does have less Hp, less weight, and smaller brakes. But the front axle seems better fitted to an appropriate sized loader. We had thought the 340 would be dedicated to a backhoe, but the weight of the hoe and the digging forces seemed to be too much for the 340. So we never mounted the hoe.
Look carefully at your hoe, If the cylinder rams are rusted they will tear up their seals the first time you move the cylinders, and then the hoses can add up to be a whole bunch of $$$.
The front mount pump should fit both tractors, but you may need an adaptor to the front pulley.
Both models are good utility tractors, but neither is strong enough to do any real digging, unless you are very careful not to strain it. Just my opinion....
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Today's Featured Article - Women and Tractors - by Teri Burkholder. The View from the Garage - Never a doubt, everything on our farm is a learning experience. I've been working very hard to get our two rundown Farmall A's sanded, primed , bondo�d, fiberglassed and painted before our big local tractor show called the Tulip Festival. My husband Ben came in the garage one rainy day to see if he could "help". Well if you knew Ben you wouldn't want him anywhere near your spray gun, fiberglass or bondo! So I pulled out the 2 old yucky looking magne
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