* Specific Mack Truck Model: Different models use different spindle nuts and axles.
* Axle Type: The type of axle (e.g., front, rear, tandem, single) significantly impacts the torque specification.
* Nut Size and Type: The size and type of the spindle nut itself will have a specific torque requirement.
* Year of Manufacture: Specifications can change slightly between model years.
To find the correct torque specification, you MUST consult your Mack truck's service manual. This manual will provide the precise torque value for your specific truck and axle configuration. Using an incorrect torque can lead to premature failure, damage to the axle, or even an accident.
Do not rely on general advice found online. Always use the manufacturer's specified torque. If you do not have the service manual, you can usually purchase one from a Mack Truck dealership or online parts supplier.