SAE J1857
SAE J1857 2003-APR-01 Flywheel Dmensons for Truck and Bus Applcatons
Although not limited to, these flywheels are normally used on trucks considered as Medium-Duty (Class 6 and 7), as well as Heavy-Duty (Class 8) trucks.
Purpose - This SAE Recommended Practice defines flywheel configurations to promote standardization of clutch installation and mounting dimensions for flywheels used with pull type single- and twin-plate truck clutches.
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