Well, it depends on the application. On a general usage tractor you are OK. If you are going to use the tractor with heavy 3pt. tillage equipment, and dependent on the hydraulic draft sensing system to maintain traction and provide depth control for the tillage implement, you need to run about 19-21 psi. to keep the tires from squatting as the draft control system does it's job. You also need to properly weight the front of the tractor to keep it solidly on the ground. Back in the day, 4-6 bottom plows were very popular. We ran 21 psi. in furrow wheel, and 19 psi in land wheel for max performance with bias tires. I'm sure the rules have changes with radial tires, and there are not many 3pt primary tillage tools being used anymore. Loren
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
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