Question about 2002 Chevrolet Silverado 2500HD

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Fan removel on 6.0 chev truck how do I remove?

I am tring to change the water pump and am not sure of how to remove the fan and clutch

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  • rkeelepainti Jan 09, 2009

    I was able to remove it with a big adjustable wrench and a few hits with a hammer while the fan belt was still attached. thanks

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I have always used an air-chisel it will loosen it. Just put the air-chisel on the fan nut and that's it off it comes. (it just loosens it so you can take it off with your hands.

Posted on Jan 07, 2009

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You can buy a fan clutch removal tool at your local auto parts store, it comes with instructions

Posted on Jan 02, 2009

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How to remove a water pump


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The text below is from the GM Service manual 4.3L V6 Engine
Water Pump Replacement (4.3L)
Removal Procedure
Drain the cooling system. Refer to Draining and Filling Cooling System .
Loosen the water pump pulley bolts.
Remove the cooling fan and clutch assembly.

Tools Required
J 46406 Fan Clutch Wrench

Removal Procedure
Remove the upper fan shroud.
Remove the fan clutch from the water pump in a counterclockwise direction using the J 46406 .
Remove the fan clutch assembly.
Remove the drive belt. Refer to Drive Belt Replacement Remove the water pump pulley mounting bolts.
Remove the water pump pulley.
Remove the radiator outlet hose clamp from the water pump.
Remove radiator outlet hose from the water pump.
Remove the water pump mounting bolts.
Remove the water pump from the engine.
Remove the water pump gaskets.
Clean the water pump gasket mating surfaces.
Installation Procedure
Install the water pump gaskets.
Install the water pump to the engine.
Apply a sealer (GM P/N 12346004) to the bolt threads.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the water pump mounting bolts.
Tighten
Tighten the mounting bolts to 41 N·m (30 lb ft).
Install the radiator outlet hose to the water pump.
Install the water pump pulley.
Install the water pump pulley bolts.
Tighten
Tighten the water pump pulley bolts to 25 N·m (18 lb ft).
Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.3L.
Install the fan clutch assembly.
Fill the radiator cooling system. Refer to Draining and Filling Cooling System .
Inspect the cooling system for leaks.

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http://www.1aauto.com/scripts/view_full_image.php?image_url=http://images.1aauto.com/EWP/1AEWP00011.jpg&description_id=1090439

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I need directions to change my water pump


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Removal
  1. stj~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: The large clutch assembly nut has a right-hand thread and must be rotated counterclockwise to remove it.
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Removal
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Item Part Number Description 1 8509 Water Pump Pulley 2 57632-S Screw and Washer Assembly, 5/16-18 x .62 Hex 3 8600 Fan Blade (5.0 and 5.8L) 4 8600 Fan Blade (7.5L) 5 8A616 Fan Clutch 6 380288-S2 Screw and Washer Assembly, 5/16-24 x .88 Hex A — 16-24 Nm (12-18 Lb-Ft)

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2 Answers

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If you have any questions feel free to ask. Let me know if you dont get diagrams(happens sometimes)

0900c1528004319d.jpgReverse rotation water pump—2.5L and 4.0L engines
  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following: NOTESome 4.0L engines are equipped with a fan clutch that threads Directly on to the water pump shaft. This fan clutch is equipped with right-hand threads. NOTEDo not store the fan clutch assembly horizontally, silicone may leak into the bearing grease and cause contamination. NOTEOne of the water pump bolts is longer than the others. Note the location for reassembly.
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