Description
When your Fiat 90 Series tractor starts making grinding noises during turns or you feel that telltale vibration coming up through the seat, it’s often the crown wheel and pinion in your differential calling for help. These gears are the heart of your drivetrain—they handle all the power from your engine and transfer it to the wheels with the right gear reduction. When they wear out, you lose power, efficiency, and smooth operation. This replacement set gets your tractor running like it should again.
What You’re Getting
- Precision-matched crown wheel and pinion designed specifically for Fiat 90 Series differentials
- Proper gear ratio to maintain the torque multiplication your tractor was built for
- Heat-treated steel construction that handles the high loads from heavy field work
- Machined to exact tolerances for smooth mesh and quiet operation
- Direct replacement that works with your existing differential housing
Built for Real Farm Work
This crown wheel and pinion set fits the Fiat 90 Series tractors including the 90-90 DT, 100-90 DT, and 110-90 DT models. These mid-size utility tractors are workhorses on farms—whether you’re running a hay operation, doing loader work around the barnyard, or pulling implements in the field. The crown wheel and pinion are what give you the torque multiplication needed for all that heavy pulling and tough conditions.
Made to Last
Farm equipment gears take a real beating, especially when you’re pulling heavy loads or working in muddy conditions. This set uses quality steel with proper heat treatment to resist wear and handle shock loads. The gear teeth are precision-ground for consistent contact patterns that reduce noise and extend life.
Installation Notes
This is a major drivetrain repair that requires splitting the tractor and disassembling the differential. You’ll need to properly set gear mesh patterns and backlash using dial indicators—it’s not a quick afternoon job. Consider having your differential rebuilt by a qualified shop if you’re not comfortable with this level of work. Always replace differential seals and use fresh gear oil when reassembling.
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