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What size is the fan clutch nut on a Chevy TrailBlazer?
The Chevy TrailBlazer fan clutch nut size is 36mm.
How do you test a fan clutch on a TrailBlazer?
Raise the hood, with the engine off and cold. Reach in and spin the fan blade by hand. If it continues to spin freely for more than five turns with no signs of drag, you have a bad fan clutch.
How does a TrailBlazer fan clutch work?
In older models, the fan clutch is controlled completely by the temperature of the engine versus the engine speed. As the clutch heats up, friction builds, and this causes the fan to rotate closer to the speed of the engine. When the clutch cools, the engine fan slows down because of a reduction in friction.
What size nut is the fan clutch?
Registered. The fan clutch “nut” is 36 mm. You can use a 1 7/16″ wrench which will be loose but will work, or you can take a 1 3/8″ wrench and grind the open end to fit.
How can you tell if the fan clutch is bad?
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.
Do you need to replace fan clutch when replacing 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.
How much does it cost to replace a fan clutch?
A fan clutch replacement cost will range anywhere from $75 to $200 for just the part, without the labor costs. When labor is accounted for in the overall fan clutch replacement cost, the total price can range between $285 to $500 to replace the fan clutch only.