The clutch assembly is integral to the overall transmission and powertrain of your heavy-duty truck.
The clutch serves three major functions by (1) transmitting torque, (2) discontinuing the torque transfer during shifting and (3) serving as a drivetrain isolator to protect against high engine vibration.
When the clutch begins to wear, these three basic functions become harder to accomplish and eventually lead to downtime.
Five simple steps to identify your clutch replacement
1. Determine the Input Shaft size (most are 1.75” or 2”).
2. Determine the Clutch diameter (the most common for Class 8 is 14” or 15.5”).
3. Determine the Flywheel Bore:
- Bore = 7” – use an 8-spring disc
- Bore = 8.5” – use a 10-spring disc
- Bore = 10” – use a 7-spring or 9-spring (Mack specific) disc
4. Identify your Truck engine’s torque rating. The torque rating of the clutch must meet or exceed the torque rating of the engine.
5. Identify the type of linkage system needed, manual for manual adjust clutch or hydraulic for self-adjusting clutch.
More information on Road Choice Clutches including animated demonstrations and technical training can be found here.
Identify your replacement clutch and visit a participating retailer or PartsASIST™ to purchase your replacement clutch today.