How does a viscous coupler work?
How does a viscous coupler work?
In a nutshell, a viscous coupler transfers torque from rotating plates with different rotation rates via a shear-thickening fluid medium. When the plates in the viscous coupler rotate at different speeds, it generates shear pressure, resulting in a rise in viscosity of the fluid to a near-solid state.
How does a viscous fan clutch work?
Most fan clutches are filled with a silicone-based oil. The oil is held in an internal reservoir when the fan is disengaged. To engage the fan, internal valves open and allow the fluid to fill the working area of the clutch. This creates friction between the drive plate and the housing, causing the fan to spin.
How do I know if my fan clutch is reverse rotation?
If the pulley uses a V-belt, direction will always be clockwise. If the pulley is poly-grooved and in contact with the grooved side of the serpentine belt, direction will be clockwise. If the pulley is flat and in contact with the backside of the serpentine belt, direction will be counterclockwise.
Should a fan clutch spin freely?
A surefire way to tell if it’s shot is to stick a screwdriver in the fan when it’s hot. If the fan stops, the clutch is bad. If the fan throws the screwdriver back at you, then the clutch is good. The fan should move freely by hand when the vehicle is off.
Will a fan clutch tighten itself?
it will tighten itself down just fine.
How do you remove viscous fans?
put spanner on viscous fan, hit with soft mallet in clockwise direction and it will eventually loosen. When you whack the spanner and the water pump just turns – curse a bit and tighten the fan belt. Then when it does nothing – whack it harder.
Should I replace my fan clutch with water pump?
A worn out fan clutch can damage a new water pump, and a worn out water pump can damage a new fan clutch. These two connected, vital cooling components must be be replaced at the same time. The water pump moves the water and the fan clutch moves the air.
What temperature does a fan clutch engage?
about 170°F
Is a fan clutch necessary?
The fan clutch is one of the most essential components in the operation of cooling fans and greatly contributes to the overall operation of the engine. While many new vehicles use electric cooling fans, many older vehicles utilize a mechanical fan clutch to help control the fans.
Can a fan clutch cause AC problems?
Yes, a bad fan clutch will cause A/C issues. The condenser needs air flow to cool hot refrigerant.
What is a AC clutch?
Your A/C compressor clutch is one of the most important parts of a vehicle’s air conditioning system. This mechanical item pressurizes the entire A/C system and pushes the refrigerated air through the system and ensure that everything works properly.
Will a bad radiator fan cause AC not to work?
Reason #5: Faulty Cooling Fans When fans aren’t properly functioning, your condenser may not receive properly cooling. Over time, this can cause your car to start emitting only hot air. The best way to check if the cooling fan is broken is through a visual inspection.
What are the symptoms of a bad AC thermostat?
How to Tell if Your Home Thermostat Is Bad
- The thermostat does not turn on: Even with fresh batteries or verified electrical connection, the display does not appear.
- The thermostat is unresponsive to your adjustments: It doesn’t turn on your HVAC systems when you adjust the temperature, or the display doesn’t change when you press buttons.