Question about 2002 GMC Envoy XL

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What is the best way to brake loose the fan clutch fron the water pump

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  • yadayada
    yadayada May 11, 2010

    HAMMER AND A LARGE PUNCH

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They make a tool set that has a wrench and holding tool. Otherwise the best way is to take a long bar with a point on the end, place the point on the flat part of the top of the hex nut flange towards your left and hit the other end of the bar with a large hammer. the jarring should break it free.(If you have a compressor an air chisel works great for this)

Posted on Jun 24, 2009

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Posted on Jan 02, 2017

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you need special tool to hold the water pump puley and long 32mm wrench to brake loose fan clutch.
the thred is left hand , so you brake it loose clockwise.
you can also use just a wrench and hummer.
put 32mm wrench over fan clutch nut and by hitting the end of wrench with a little luck it is possible too
when you put it back you can use same procedure.
you may have enough room to change thermostat , by sliding fan assy. to the side without taking it out.

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Cannot break the fan loose from the water pump. Is it left hand thread. Is there a speciail tool to hold the fan to break it loose.


The best tool for this is a ratcheting fan clutch tool, although the ones you can rent from Auto Zone work by hitting the wrench with a BFH ( big hammer) possibly quite a few times.
Just changed the water pump on my 1998 Dodge Dakota with a similar setup and had to whack it about twenty times to break it loose being careful not to break anything plastic.
Standing in front of the vehicle turn the nut towards the passengers side of the car and once broken loose, carefully spin the fan clutch off being careful to not damage the radiator.

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Cant get the fan clutch nut off the front of the old water pump so the pump can be removed Have Cowl removed the fan loose and Two bolts removed from the Water pump pully and belt loose


Ok, it's best to have the fan belt ON all the way, that way it holds the pulley in place. Then, put your wrench on the nut, and tap the wrench with a hammer. This will break it loose, and then you can unscrew it the rest of the way. It works like an impact wrench.

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Get a wrench that fits on the fan clutch. Most auto part stores will have a fan clutch removal tool.

It works the best if you put the wrench onto the fan clutch and then hit it with a hammer in the dirction to take the clutch off. Sometimes it might take multiple tries to break the clutch loose.

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