Product Descreiption
1. Product Specifications
- OEM Part Number: 3969564, interchangeable with 3281583, 3565151, 3936213, 3976831, 3957434, 5259022
- Applicable Engines: Cummins QSC8.3, 6CT8.3, L8.9 and 6C series diesel engines
- Structure: Integrated spring & hydraulic damping design
- Material: Cast iron & aluminum alloy housing, high wear-resistant bearing
2. Installation Position
Mounted on the front end of the engine, next to the fan, water pump and alternator. It is installed on the engine accessory drive belt system.
3. Main Functions
- Automatically maintains constant tension of the drive belt to prevent belt slipping.
- Compensates for belt elongation and wear during long-term operation.
- Reduces vibration and noise of the belt transmission system.
- Extends the service life of the engine accessory belt and related components.
