Description
If you’ve been hearing whining from the rear end or noticed your tractor losing power to the wheels, there’s a good chance your crown wheel and pinion are worn out. These gears are the heart of your differential, transferring power from the transmission to your rear wheels while allowing them to turn at different speeds. When they start to fail, you’ll know it – and you’ll want to fix it before you’re stuck in the field.
What You’re Getting
- 8-tooth pinion gear with precision-cut teeth for smooth power transfer
- Crown wheel with 36 splines engineered to handle the torque from your Massey
- Factory specifications for proper gear mesh and reduced noise
- Direct replacement for AG105 and AG105L differentials only
- Quality construction that stands up to heavy field work and loader duty
Built for Real Farm Work
This crown wheel and pinion set fits your Massey Ferguson 4200 and 4300 series tractors – reliable mid-size machines that handle everything from hay operations to row crop work. Whether you’re pulling a disk, running a loader, or hauling wagons, these tractors put serious loads on the differential. The 8:1 gear ratio provides the torque multiplication you need for heavy pulling while maintaining reasonable ground speed.
Made to Last
Farm work doesn’t give drivetrain components any breaks, and differential gears take some of the hardest abuse on your tractor. This set is built to handle the shock loads from engaging implements, the constant stress of field work, and the heat generated during heavy operation. The precise machining ensures proper gear contact for long life and quiet operation.
Installation Notes
This is a major repair that requires complete differential disassembly and proper setup of gear mesh patterns. You’ll need to set backlash and bearing preload according to Massey specs, and don’t forget to order the pinion nut (part 62375) if yours is damaged. Plan on replacing seals while you’re in there, and use fresh gear oil when you button it back up.
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