Overrunning Alternator Pulley with One-Way Clutch for Farm Equipment SKU: QT58625

That squealing belt or flickering dash lights might not be the belt or alternator—it could be a failed overrun clutch pulley. When this pulley fails, you'll experience rapid belt wear, alternator bearing damage, and charging problems. This replacement features a precision one-way clutch that allows the alternator to coast down gradually rather than being jerked to a stop during throttle changes.

Why This Design Matters

• Protects charging system during constant speed changes of farm work
• Precision-engineered clutch mechanism handles thousands of engagement cycles with quality bearings for smooth operation
• Machined pulley grooves provide optimal belt contact while balanced assembly prevents vibration damage
• Often fails internally with no visible damage, making diagnosis tricky without proper testing

Installation requires special attention as these pulleys are directional and must be tested before installation by spinning—they should turn freely in one direction and lock in the other. Over 55 years of experience has taught us that proper pulley function is critical to charging system reliability in demanding agricultural applications.