And this post, post #20 from Dave of Dave's Tractors, is a solid gold reply that *anyone* that operates a tractor (any brand) should heed:
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We sell Branson, Mahindra and Deutz, and we work on all brands. There is not a single brand of compact tractor that does not deal with an occasional front axle failure. We have repaired broken front axles on what would be considered the very best most expensive brands. (Trying to not pick on any particular brand...but rest assured, it crosses all brands).
I can brake any compact front tractor axle if you give me a half hour or so. There are several methods. The common one we see is folks driving down a bank, like towards a creek, where they load the front bucket heavily and then aggressively try to back up the bank. Front tires have exceptional traction in this circumstance, rear tires have almost no traction, and a lot of tractive force is needed to get back up the hill. Now the front axle, which is designed to just assist traction, is trying to do much more than it's design spec. If you get a bit aggressive and the tires do not spin and the engine does not bog and the clutch does not slip...then you either are successful in the maneuver or you break a front axle, or side gear or ring and pinion.
There is another carnage method - if you use the front loader as a dozer or digger instead of as a loader, you can load the bucket up heavy and then lift the loader some (but remaining in the pile) and then drive forward and you are again putting huge loads on the front axle and nothing on the rear axle. The rear end is light, front traction is exceptional, all the work is being done by relative tiny front axles. This also happens pushing over trees or using the front bucket to lift a huge boulder out of a hole. Rest assured, there are many ways to break a tractor!
The front axle is tiny compared to the rear axle. It ought to just assist, not do all the work. It is my opinion that this is the cause of most front axle failures. Now if we go to a full size Cat tractor-loader, either a skip loader or a TLB, they use a pretty massive front axle, and you can get away with digging. Same with a skid-steer. But not a compact farm tractor that happens to have a loader installed.
Filling the rear tires to 75% with heavy liquid
ballast and hanging a good size implement off the three-point will go a long ways toward saving a front axle, because it keeps the rear axle in the game as far as tractive force. That gives the front axle much less to do. And also, consider how you are using the tractor and if you are asking for more work from the tractor than for which it is designed - then do it seldom and do it gently.
I am sure there are other reasons front axles break, it isn't always due to what I described above. There can be faulty parts, or a leaky seal that drains away lubrication, or a failed bearing. These things happen, but far and away what I described above is the cause of the failure, and frankly an operator needs to understand the physics of it all well enough to be careful in certain situations. Repeat failures on a single tractor are generally more telling that the operator is repeating the same type of carnage inducing usage than is it telling us that the axle has issues. I am sure there are exceptions, I am speaking in general terms here.
Branson uses a good solid front axle, not any more prone to breakage than any of the better known brands. But it is not a $100k commercial skip loader with massive planetary front axles.
Those are my thoughts, and I hope I have not offended anyone.
Dave
Dave's Tractor, Inc.
Red Bluff, California