Dayco Automatic Belt Tensioner 89341
- Designed to maintain constant tension on serpentine belt drives
- Automatic, spring-loaded tensioner is incorporated into the drive system geometry to maintain the proper tension throughout the drive
- Unique, patented flat-spring design helps to reduce variations in operating tension, increasing bearing longevity and reducing the risk belt squeal, slippage and damage
- Coated spring with teflon strip that resists abrasion and rust
Dayco No Slack Automatic Belt Tensioner
Designed to maintain constant tension on serpentine belt drives
Serpentine belt drives consist of a single belt that powers most, if not all, of the engine's accessories.To maintain the proper tension throughout the drive, an automatic, spring-loaded tensioner is incorporated into the drive system geometry. Dayco's Automatic Belt Tensioner features a patented "flat spring" design that's engineered to provide less operating range variations in tension.
This reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed. It also lessens the risk of belt squeal and slippage, or poor accessory performance caused by low tension after the belt begins to stretch and wear. A Teflon strip wound within the spring resists abrasion. The flat spring itself is coated to resist rust.
Other superior design features include a steel locator pin (where the application demands). A heavy-duty cast aluminum spring case resists cracking and fatigue. The heavy-duty cast aluminum arm offers additional strength and less distortion . An aluminum retainer ring locks the spring case and arm together, and seals against corrosion.A steel pivot tube (where the application demands) provides additional strength for critical torque requirements.
A thermoplastic rubber "spring slot plug" keeps out harmful contaminants. The lubricated nylon "pivot tube bushing" and "spring bushing" promote quieter performance.A rubber "O" ring seals against dust and grime.The zinc coated mounting bolt resists rust, and is concentric for a more even degree of constant tension. In order to meet OEM performance standards, Dayco Automatic Tensioners come with either a glass-filled polymer (plastic) or steel pulley, that features a dust cover to protect against contaminants.
|Types||Automatic Belt Tensioners|
|Warranty||2 year or 40,000km manufacturer's warranty, whichever comes first.|