What do you need to know about fan clutch replacement?
Average rating from 79 customers who received a Fan Clutch Replacement. A fan clutch is designed with a temperature sensitive spring that is used to control the engaging and disengaging of the fan depending on the temperature of your engine.
What causes radial streaks in a fan clutch?
Radial streaks are another potential clue—this happens when oil escapes from the clutch and is then blown outward in all directions by the fan. Inside the fan clutch, there is a small reservoir filled with a viscous silicone-based oil. The oil flows to and from the main chamber as engine heat fluctuates, engaging and disengaging the clutch.
How long does it take for a fan clutch to come to life?
After 4-5 minutes, the fan clutch should come to life. Assuming it doesn’t, or that it’s sluggish when it finally gets moving, it may be on its last legs. The same is true if the fan speed accelerates as soon as you start the vehicle.
How does a torque limiting fan clutch work?
A torque-limiting fan clutch reacts to engine speed. A centrifugal valve opens to allow the flow of heavy silicone fluid, locking the fan blades to the pulley. At idle and low engine speeds, this fan clutch is fully engaged, gradually disengaging as engine speed increases.
Average rating from 79 customers who received a Fan Clutch Replacement. A fan clutch is designed with a temperature sensitive spring that is used to control the engaging and disengaging of the fan depending on the temperature of your engine.
A torque-limiting fan clutch reacts to engine speed. A centrifugal valve opens to allow the flow of heavy silicone fluid, locking the fan blades to the pulley. At idle and low engine speeds, this fan clutch is fully engaged, gradually disengaging as engine speed increases.
What’s the difference between standard and heavy duty fan clutches?
Standard-Duty Thermal Fan Clutch: This design turns the fan at 60-70 percent of the water pump shaft speed when engaged, and 20-30 percent when disengaged. It’s made for fans with a lighter pitch. Heavy-Duty Thermal Fan Clutch: This fan style turns the fan at 70-90 percent of the shaft speed when engaged for increased cooling.
How can I tell if my water pump fan clutch is worn?
Mark one of the fan blades with a white pen or chalk and use a timing light to check for changes in fan speed which may indicate problems as well. Other indicators of potential worn fan clutches may also be wobbling or bearing noises coming from the water pump shaft. Step 2: Remove the fan shroud.