Description
When you pull the oil pan and see metal shavings or your crankshaft has worn the main journals undersize, it’s time for proper engine bearings. Your Allis Chalmers engine depends on those main bearings to keep the crankshaft centered and running smooth. This .030″ undersized bearing set is exactly what you need when the machine shop has turned your crank to restore a proper oil clearance and get your tractor’s heart beating strong again.
What You’re Getting
- Complete main bearing set sized .030″ under standard for reground crankshafts
- Precision-manufactured bearings that meet or exceed original specifications
- Proper oil clearances restore engine oil pressure and reduce wear
- Quality materials designed to handle the loads of agricultural engines
- Direct replacement for worn standard bearings when crank is machined undersize
Built for Real Farm Work
These bearings are designed for Allis Chalmers tractors that have had crankshaft work done during engine overhaul. Whether you’re rebuilding a utility tractor for field work or restoring an older machine, these undersized bearings work with properly machined crankshafts to restore the tight oil clearances your engine needs for proper lubrication and long life.
Made to Last
Engine bearings take tremendous loads and operate in the hottest, most demanding part of your tractor’s powerplant. These bearings are manufactured to handle the punishment of agricultural use, with materials and construction that provide reliable service through seasons of hard work. The precision fit ensures proper oil flow and prevents the kind of wear that leads to costly engine damage.
Good to Know
Installing main bearings requires engine disassembly and proper torque specifications – this is typically part of a complete engine overhaul. Make sure your crankshaft has been properly ground to .030″ undersize before installation. Check clearances with Plastigauge to verify proper fit. A tip from experienced rebuilders: always replace rod bearings at the same time if they’re available in matching undersize – mixing bearing clearances can cause oil pressure problems.
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