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Post hole digging
I'd look at the travel at the hitch, more specifically the top link which may be inhibiting downward movement.
Also, look at the bottom of the auger for a flat plate just above the lowest point of the teeth. If it has one, it is called anti-submarining or plunging plate. It's designed to prevent the auger from digging too quickly. Most likely the clay is getting balled up under the plate acting like ball bearings, or it's roots or stones doing the same. I had this happen when helping a guy use a 2-man auger from Home Depot--it took everything we had to push the auger down and pull it up. And it had the plate I mentioned.
You could cut it off with an angle grinder, but be advised that if you do, the auger could screw itself into the ground. The only way to get it out is a big pipe wrench to unscrew it. My skid steer has an auger but it reverses. There have been times I've screwed into the ground and liting it straight up ain't happenin'---and I can lift over 5,000 lbs
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Post hole digging
Sounds like the end of the auger pilot screw is really worn or missing. But I go back to the plate keeping it from digging too especially since it's a one-man---they don't want to you to auger too fast.
Back to the pilot screw, there are different types---ask. Them if they havew what is called a fish tail type. It looks like two twisted prongs. These really stir and loosen the soil. The other type looks like a Dairy Queen as a tip and are useless.
I'd ask to rent a Toro Dingo which will fit through a gate and an auger head and auger. It has down force and about 800 lb of up too.
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Post hole digging
Auer, Frank's just generally a scaredycat. Meeeeow.
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Post hole digging
Me thinks it was all due to a loose nut behind the steering wheel. Am I right Franky?
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Post hole digging
There's something fishy going on with augers lately.
I drilled (17) 16" x 48" holes today for a pole barn building company. They hadn't used me in three years apparently using rental equipment.
The laborers told me on the last job they rented a NEW Bobcat brand skid steer about the size of mine (80 hp) which is on the bigger end of the scale.
They said it took an hour per hole to drill the same size hole I dug in about 3 minutes (4 or 5 plunges to clean out hole). The Bobcat bogged down and at one point wouldn't turn the auger. Mine's rated at 1,700 pound feet of torque at the auger. Clay was the material.
They noted that I have flat, carbide chisel teeth on my auger. It's rated as "extreme duty" supposedly rated for drilling asphalt, but I doubt it. It can auger through frost which is like asphalt, but makes chips like wood shavings from a wood plane.
So I wonder what may driving the lack of ability with augers across the spectrum.
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