Horton fan drives
DM Advantage® On/Off Fan Drive
DM Advantage on/off fan drives are spring-engaged and air-disengaged for maximum efficiency. They’re lighter, turn larger fans, have a fail-safe design and a low parts count – a proven answer for the hottest under-bonnet applications.
- fail-safespring engaged
- high torquefor larger fans
- lowparts count
The range
Specifications
Specifications
| Actuation | Spring-engaged, air disengaged |
| Minimum Air Pressure To Disengage | 90 psi [620.5 KPa] |
| Out Of Box Torque | 2400 in.-lbs. [271 N-m] |
| Friction Disc Diameter | 7.9 In [200.6 mm] |
| Fan Blade Capacity (diameter) | 32 In. [812.8 mm] |
| Horsepower Range | 250-600 HP [186-447 KW] |
| Friction Liner Wear Limit Min. thickness. | 130 In. [3.302 mm] |
How it works
How a Fan Drive Works
Cooling only when the engine needs it.
Off Most of the Time
An engine cooling fan can absorb a lot of power. A fan drive (fan clutch) leaves the fan free-wheeling – or turning slowly – until the coolant, charge air or A/C needs more airflow. That saves fuel and power, cuts noise and lets the engine warm up faster.
On When It’s Hot
When the engine controller calls for cooling, a solenoid valve changes the air signal and the drive locks the fan to the pulley. Horton drives are spring-engaged and air-released: if air pressure is lost, the fan comes on, so the engine stays cool – fail-safe.
Made to Be Rebuilt
Linings, bearings and seals wear. A Horton repair kit restores the drive to its original specification for less than a new one – and Norman G Clark makes the drives and kits in Melbourne.
Why DM Advantage
Proven in the Hottest Engine Bays
Long Life
Premium sheave bearing and long-wearing friction liner.
Saves Fuel
On/off operation cuts noise and conserves fuel.
Simple
Low parts count for easy installation and maintenance.
Optimum Temperature
Keeps coolant at the right temperature for durability.
Literature & related
More Information
- DM Advantage single-speed
Product guide · PDF, 5.9 MB - DM Advantage generic view
Parts list · PDF, 288 KB - Fan drive cross-reference
Find the Norman G Clark equivalent · PDF, 200 KB
Not Sure Which One You Need?
Tell us about the job – the machine, the conditions and what it has to do – and we’ll help you choose the right Horton fan drives product.