Question about 2000 Chevrolet Blazer

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2000 Blazer 2D 4WD ZR2

I need to swap out my water pump, but am unsure how the clutch fan assembly should be removed. I removed the full pulley bolts, but this only releases the pully.....Is there a special trick I need to poerform to get the fan assembly off of the water pump shaft?

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  • Anonymous Mar 12, 2014

    I would like someone to tell me how to get the crank shaft pully off so that I can remove the bolts from the water pump

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The big nut spins counter clock wise. you have to put your pulley bolts back on and make sure they are tight. leave belt on so that you have more resistance to pull against when tring to loosen the nut put a bar inbetween the pulley bolts so it won't slip off and then loosen that big nut looking thing and you should have it from there. to the same thing in reverse order to install it

Posted on Jun 10, 2008

  • bear001 Jun 11, 2008

    Thanks for the feed back!!:))

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Fan clutch is noisy on my 2003 Chev Blazer. how do i replace it?


The fan clutch is bolted to the water pump with four bolts, and the fan itself bolts to the clutch with four bolts. The easiest is to unbolt the fan clutch from the water pump since the fan may not clear the shroud. Once the four bolts are removed from the water pump the fan should drop down, and you should be able to wiggle it up and out. If not then remove the shroud which should have two bolts on each side. Remove the fan from the clutch, bolt the new clutch on, and do the reverse of removal. Depending on accessories you may have to remove the upper radiator hose but normally you can wiggle the unit out. Do not remove the pulley since this will only add extra work and frustration.

May 15, 2014 | 2000 Chevrolet 2500

1 Answer

I need to remove the cooling fan shroud from my 1995 Lincoln Continental. How is the easiest way to go about this?


Engine Fan REMOVAL & INSTALLATION 3.8L Engines
  1. Disconnect the negative battery cable.
  2. Remove the radiator upper sight shield.
  3. Disengage the electrical connector, then remove the integrated relay control/constant control relay module assembly located on the radiator support.
  4. Disconnect the fan electrical connector. Fig. 1: Disengage the fan electrical connector 86873115.jpg

  5. If necessary, remove the air bag crash sensor.
  6. Unbolt the fan/shroud assembly from the radiator and remove. Fig. 2: Unbolt the fan assembly from the radiator 86873116.jpg
    Fig. 3: Remove the fan from the engine 86873117.jpg
    Fig. 4: Slide the fan as an assembly up and away from the radiator. Be careful not to dislodge the mounting stud on the left side. 93143p56.jpg

  7. Remove the retainer and the fan from the motor shaft and unbolt the fan motor from the shroud.
  8. Installation is the reverse of the removal procedures. Tighten the fan shroud retaining bolt to 23–33 inch lbs. (2.6–3.7 Nm). Tighten the fan shroud retaining nut to 71–106 inch lbs. (8–12 Nm). Fig. 5: Constant control relay module location — 3.8L engines 86873118.gif
4.6L Engine
  1. Loosen the fan clutch-mounting shaft from the water pump hub.
  2. Loosen the fan shroud from its radiator mounting and remove the lower hose from the shroud.
  3. Lift the fan and clutch assembly and the fan shroud from the vehicle.
  4. If necessary, remove the fan-to-fan clutch retaining bolts and separate the fan from the fan clutch. CAUTION
    Closely examine the fan for cracks or separation, to avoid the possibility of personal injury or vehicle damage. To install:
  5. Assemble the fan and fan clutch. Tighten the retaining bolts to 15–20 ft. lbs. (20–27 Nm).
  6. Install the fan and clutch assembly and the fan shroud. Mount the fan clutch shaft to the water pump hub and tighten to 37–46 ft. lbs. (50–62 Nm).
  7. Slip the shroud into the lower mounting clips and install the shroud retaining screws. Fig. 6: Fan and fan clutch assembly — 4.6L engine 84173064.jpg
5.0L Engines
  1. Loosen the fan clutch-to-water pump hub retaining bolts.
  2. If necessary, remove the drive belt from the water pump pulley.
  3. Remove the fan shroud upper retaining screws. Lift the shroud to disengage it from the lower retaining clips.
  4. Remove the fan clutch-to-water pump hub bolts and remove the fan and clutch assembly and the fan shroud.
  5. If necessary, remove the fan-to-fan clutch retaining bolts and separate the fan from the fan clutch. CAUTION
    Closely examine the fan for cracks or separation, to avoid the possibility of personal injury or vehicle damage. To install:
  6. Assemble the fan and fan clutch. Tighten the retaining bolts evenly and alternately to 12–18 ft. lbs. (16–24 Nm).
  7. Install the fan and clutch assembly and the fan shroud.
  8. Install the fan clutch-to-water pump hub bolts.
  9. Slip the shroud into the lower mounting clips and install the shroud retaining screws.
  10. If removed, install the water pump drive pulley and adjust the belt tension; refer to Section 1.
  11. Tighten the fan clutch-to-water pump hub bolts evenly and alternately to 15–22 ft. lbs. (20–27 Nm). Recheck the belt tension.
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Jul 14, 2010 | 1995 Lincoln Continental

1 Answer

I'm looking for torque specs on the water pump bolts to the block for 2000 chevy blazer 4.3 L


Fig. Exploded view of the water pump assembly mounting-4.3L engine

fdf58a9.jpg

To install:
  1. Clean the gasket mounting surfaces.
    NOTE The water pumps on some of the engines covered may have been installed using sealer only, no gasket, at the factory. If a gasket is supplied with the replacement part, it should be used. Otherwise, a 1 / 8 in. (3mm) bead of RTV sealer should be used around the sealing surface of the pump.
  2. Apply sealant to the water pump retainer threads.
  3. Install or connect the following:

    Water pump using a new gasket. Tighten the water pump retainers to 89 inch lbs. (10 Nm) for 4.2L engines, or to 30 ft. lbs. (41 Nm) for 4.3L engines. For 5.3L engines, tighten the bolts to 11 ft. lbs. (15 Nm), then to 22 ft. lbs. (30 Nm). Coolant hose(s) Water pump pulley. Tighten the pulley bolts to 18 ft. lbs. (25 Nm). Fan or fan and clutch assembly Serpentine drive belt (if equipped) by positioning the belt over the pulleys and carefully allow the tensioner back into contact with the belt. V-belts (if equipped) and adjust the tension Upper fan shroud Negative battery cable
  4. Refill the engine cooling system.
  5. Run the engine and check for leaks.

Hope this help to solve it; rebember rated this post. Good luck.

May 01, 2010 | 2000 Chevrolet Blazer

1 Answer

Change water pump


1 disconect neg.battery cable 2 drain the cooling system 3 remove air intake tube from filter housing to throttle body 4 remove top half of fan shroud 5 remove the serpentine belt 6 use a strap wrench to prevent the waterpump pulley from turning while turning the fan clutch in the counterclockwise direction. 7 remove fan and set aside 8 remove belt tensioner 9 remove hoses from water pump 10 remove 6 bolts, 3 on either side and remove the water pump. 11 remove the thermostat housing from the old pump and install on the new one. 12 re assemble in reverse order. make sure the mating surface of the engine block where the pump bolts on is clean and free of old gasket material before installing new pump and gaskets. When assembled fill cooling system, start engine and let idle untill thermostat opens and engine reaches operating temp.KEEP WATER LEVEL FULL. After a test drive recheck the coolant level, and you are done.

Mar 14, 2010 | 2000 Chevrolet Silverado 1500

2 Answers

I am trying to remove the bolt for the fan clutch assembly on a 97 chevy blazer.


  1. 1 Remove the fan and clutch assembly from the fan's pulley. The assembly attaches to the pulley with several bolts on the circumference of the pulley. To remove the bolts, position an open-end wrench over each bolt and turn each bolt in a counterclockwise direction while grasping one of the fan's blades to prevent the fan from turning with the bolt.
  2. Step 2 Pull the fan and clutch assembly away from the engine, then lift the assembly out of the engine's compartment.
  3. Step 3 Remove the bolts which hold the fan to the clutch. The bolts are located on the back of the fan, and can be removed with a open-end wrench.
  4. Step 4 Place the fan and clutch assembly on a flat surface with the clutch facing up, then pull the clutch straight up to disengage it from the fan.

Nov 12, 2009 | 1997 Chevrolet Blazer

1 Answer

How to change water pump (1997 sonoma)


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.

Oct 01, 2009 | 1997 GMC Sonoma

1 Answer

I need directions to change my water pump


drain engine coolant.relieve belt tension .and remove the drive belt.remove upper fan shroud.remove fan or fan and clutch assembly.remove water pump pulley and coolant hoses from water pump.remove water pump bolts.then remove pump from engine.pay attention to bolts location because they are different lenghts.clean water pump gasket mounting surface dont scratch .or pump gasket wont seal and leak .apply sealant to water pump bolts.install water pump with new gasket.if gasket paper put a sealant on it.torque water pump bolts to 30 ft lbs.if you got a 2.2L engine torque water pump bolts to 18 ft lbs.install coolant hoses on pump .install water pump pulley.install fan and fan clutch assembly.install the drive belt .and the upper fan shroud.fill the radiator with coolant.then run engine to check for leaks.WARNING AS A SAFETY PRECAUTION REMOVE NEGATIVE BATTERY CABLE SO CAR WONT BE CRANK BY ACCIDENT. ALSOOOO DONT FORGET TO TURN OFF RADIO FIRST BEFORE DISCONNECTING BATTERY SO YOU WONT LOSE YOUR RADIO CODE.

Jun 01, 2009 | 1999 GMC Jimmy

1 Answer

How to change a water pump?


You will need to remove the upper fan shroud, remove the fan clutch that is threaded onto the water pump it is easiest to get the tool for this or you can use a bar between two of the pulley bolts and use a cresent wrench on the big nut. After you remove the fan clutch there is the small hoses on the top of the water pump and the lower hose on the bottom of pump. Then there are only four bolts holding the pump to the motor. Reinstall in reverse order. Let me know if you need more help.

Jan 06, 2009 | 1999 Chevrolet Blazer

1 Answer

Fan removell


The big nut is part of the fan it threads on to the water pump. To remove loosen two of the pulley bolts put a pry bar between these two bolts the use a large wrench on the big nut to thread the fan off the pump. righty tighty, lefty loosey. They also make tools for removing the fan clutch.

Dec 16, 2008 | 2000 Chevrolet Blazer

2 Answers

Change water pump


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.
    • Negative battery cable
    • Electric cooling fan connector
    • Accessory drive belt
    • Engine cooling fan and pulley
    • Water pump pulley
    • Power steering pump
    • Lower radiator hose from the water pump
    • Heater hose
    • Water pump and discard the gasket
To install:
  1. Clean the mating surfaces of all gasket material.
  2. Install or connect the following:
    • Water pump using a new gasket. Torque the bolts to 17 ft. lbs. (23 Nm).
    • Heater hose
    • Lower radiator hose
    • Water pump pulley. Torque the bolts to 20 ft. lbs. (27 Nm).
    • Power steering pump
    • Engine cooling fan and shroud. Torque the bolts to 31 inch lbs. (3 Nm).
    • Accessory drive belt
    • Electric cooling fan connector
    • Negative battery cable
  3. Fill and bleed the cooling system.
  4. Start the engine, check for leaks and repair if necessary.
3.7L Engine
  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:
    • Negative battery cable
    • Fan and clutch assembly from the pump
    • Fan shroud and fan assembly. If you’re reusing the fan clutch, keep it upright to avoid silicone fluid loss!
    • Lower hose
    • Water pump (8 bolts)
  4. Installation is the reverse of removal. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm). 0900c1528004319e.jpgWater pump tightening sequence—3.7L

Nov 15, 2008 | 2002 Jeep Grand Cherokee

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