Description
When your Fendt starts running hot or that fan sounds like a jet engine even on cool mornings, it’s time to look at your viscous fan clutch. This smart little component is the brain of your cooling system—it knows when your tractor needs maximum airflow and when it can ease off to save fuel and power. A failed clutch either runs constantly (robbing power and fuel) or won’t engage when needed (leading to overheating).
What You’re Getting
- Temperature-sensitive component that automatically engages the fan when needed and frees up valuable horsepower when it’s not
- Smooth modulation that prevents shock loads that destroy fixed drives
- Saves 15-20 horsepower during light work or cold starts by disengaging when cooling isn’t needed
- Precision-engineered silicone fluid system that changes properties with temperature to control fan speed
- Precision-machined housing with exact clearances for proper operation throughout the clutch’s life
Built for Real Farm Work
This viscous clutch is designed specifically for your Favorit 800 Turboshift and 900 Vario COM I series Fendt—tractors known for their sophisticated engineering and demanding work schedules. Whether you’re pulling wide implements, running a big baler, or handling heavy loader work, these machines generate serious heat that requires intelligent cooling management. This smart operation can free up 10-15 horsepower during normal operation compared to a direct-drive fan.
Made to Last
Contains specially formulated silicone fluid that responds predictably to temperature changes throughout its service life, allowing significant slip when cold and progressively engaging as coolant temperature rises. The robust sealed construction prevents contamination that would alter the clutch’s carefully calibrated response, ensuring years of maintenance-free operation.
Installation Notes
Handle with care during installation—never store the unit on its side or upside down, as this can cause fluid migration that affects performance. Install according to orientation marks and torque to specifications—over-tightening can damage the water pump shaft. After installation, you should hear and feel increased fan engagement as the engine warms, with full lock-up typically occurring around 200°F coolant temperature.
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