What temperature should a fan clutch engage?
about 170°F
At what temperatures do fan clutches engage? Answer: Most fan clutches engage at about 170°F air temperature (about 180-190°F engine temperature). They reduce the temperature about 20°F before disengaging.
What activates the fan clutch?
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.
Should a fan clutch spin freely when cold?
Engine cold and off. If you can spin the fan freely, it is bad. If good there will be considerable resistance.
How do you test a radiator fan clutch?
To confirm the diagnosis, start with this simple test: Spin the fan as hard as you can on an engine that has not been started that day. If the fan rotates more than five times, you can bet the clutch is bad. You should feel some resistance and the fan may spin up to three times, depending on the ambient temperature.
How do I know if my fan clutch is going out?
Symptoms of a Bad Fan Clutch
- Engine overheating at low speed or when stopped is the most-common fan clutch failure symptom.
- Insufficient heat in winter is another common problem but caused by the opposite fan clutch failure.
- Excess fan noise at high speed is caused by the same problem, a seized fan clutch.
How do I know if my 7.3 clutch fan is bad?
If you have a really bad clutch it will wiggle it should spin side to side but have NO back & forth movement. Another way is to start it up & watch the speed of your belt & pulleys then watch the speed of your fan, if it’s not spinning around like a cattle fan & is moving slower then that’s a good sign that it’s bad.
How can you tell if a fan clutch is bad?
How do I know if my fan clutch is reverse rotation?
Clockwise or counter-clockwise rotation of the fan blade is defined as viewed from the front of the vehicle looking toward the rear. The replacement counter-clockwise fan clutch will be marked “REVERSE”.
Will a fan clutch tighten itself?
it will tighten itself down just fine.
Can you drive with a bad clutch fan?
While most drivers recognize the signs of an overheating engine, many do not immediately think of the fan clutch as the cause. A bad fan clutch will cause the fan to not operate as it should. An engine fan not doing its job well can increase the temperature in the engine, leading to potential engine damage.
How long does a fan clutch last?
The average failure rate of the radiator clutch fan shows that the fan clutch failure that needs replacement is most typical around an average of 140,00 miles. This is no guarantee, but the repair data has shown that around 140,000 miles are the average rate for failure and the average time of fan clutch replacement.
Why does my clutch fan wobble?
If there is any wobble in the fan, there is a bad bearing in the fan clutch, or a worn bearing on the water pump shaft. A bad water pump bearing will usually cause the water pump to leak and/or make noise, but not always. Remove the fan clutch and see if the play is in the water pump shaft.
What is the purpose of a fan clutch?
A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine . Aug 9 2019
How to know if clutch is good?
Part 1 of 1: Test the clutch Check the clutch. Before checking to see if a clutch needs to be replaced, see if it is engaging and disengaging properly. Drive and test the clutch operation. Put the vehicle into first gear and drive off from a stop, as usual. Test the clutch by attempting to take off from third gear. Replace the clutch if necessary.
How do you remove the clutch fan?
Loosen the the fan clutch using a 32mm wrench. The threads are reverse rotation, so turn it CLOCKWISE to loosen. Once the fan clutch is loose, remove the wrench, spin the fan clutch the rest of the way off with your hand. Once the fan is completely off carefully fish it out from between the engine and the radiator, it may take a little force.
What is a non thermal fan clutch?
A non-thermal fan clutch is nothing more than a thermal fan clutch always partly engaged. It provides adequate cooling when needed, however, it does not save you money by disengaging (operating at a lower RPM) when additional cooling is not needed.
