Description

When you start hearing that telltale knocking sound from deep in your John Deere’s engine, or feel unusual vibrations through the cab, it’s time to take a hard look at your main bearings. These critical components keep your crankshaft properly positioned and running smooth, and when they start wearing out, you’ll know it. A worn main bearing doesn’t just make noise—it can destroy your expensive crankshaft and turn a manageable repair into a complete engine rebuild.

What You’re Getting

Standard size bearing designed to restore proper clearances in your John Deere engine
Precision-manufactured to handle the heavy loads and constant rotation of diesel engine operation
Direct replacement that fits without machine work or modifications
TISCO quality construction built to handle real farm conditions and demanding duty cycles

Built for Real Farm Work

This main bearing fits various John Deere tractor engines where reliable power is essential for field operations, PTO work, and loader applications. Whether you’re running through harvest season, pulling heavy tillage equipment, or powering demanding implements, your engine’s main bearings take the brunt of every power stroke and need to keep things running smooth under load.

Made to Last

TISCO builds these bearings to handle the punishment that comes with agricultural use. The materials and construction are designed to resist wear from dirt ingestion, handle temperature cycling from field work, and maintain proper clearances through thousands of hours of operation under varying loads.

Installation Notes

Main bearing replacement is serious engine work that requires proper tools, torque specifications, and experience with engine rebuilds. Always check crankshaft condition and have it machined if needed. Replace bearings as a complete set and follow proper torque sequences to ensure even loading and prevent bearing damage.