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What does the screw in the centre of a flowson 25 - 50 water pump do ?

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I use Grundfos pumps which I think are the same. The center screw does nothing. It is only a plug.

Posted on Nov 09, 2014

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2002 2w 4 cy stick shift. My car is running but there is a rattling or drowneding sound. Not sure if it's timing, water pump or center bearing. How do I know


Timing will not make a noise unless you are under acceleration or load ---Water pump will make a dead rattling sound ( listen to the end of a screw driver on the water pump housing . It will have a deep rumble if faulty)--centre bearing will be noisy when travelling and will produce a vibration at speed . More information as to when the noise is happening and wether the car is stationary or travelling would be a big help.

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Leaking anti freeze from water pump screw


Most water pumps have a weep hole that leaks when the pump seal is broken. Usually indicates the water pump needs replaced.

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How to remove injector pump on 2.5 ford ranger 2008


You need a puller. You remove the two bolts holding the pump to the engine. Slacken the pulley mounting nut off a few turns. The puller has two bolts that screw into the pulley, and the centre screw sits in the pulley mounting nut. Turn the centre screw until the shaft taper is released from the pulley.
It's easier to show in pictures than put into words.

May 20, 2012 | 2008 Ford Ranger 2.5

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Im trying to remove the water pump from my bmw 316i 1996 but i cant get the fan off, hav removed the allan key bolts for the outer part of the fan but cant get the centre piece off to gain access to the...


To get the viscous clutch of the water pump you first need to remove the belt pulley and remove the water pump. Then put the impeller of the water pump in a vice and using a 32 spanner screw the viscous clutch off. Note that the bolt on the viscous clutch is of left hand thread so you have to unscrew the opposite way to a normal bolt.

Sep 09, 2010 | BMW 318 Cars & Trucks

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I need to replace the water pump on a 1990 2.5 dodge caravan.


WATER PUMP - 3.3/3.8L ENGINE
REMOVAL
Drain Cooling System. Refer to procedure in this section.
Remove accessory drive belt. Refer to procedure in this section.
Remove right front lower fender shield.
Remove water pump pulley bolts and remove pulley.
Remove water pump mounting screws Water Pump - 3.3/3.8L Engine Remove water pump.
Remove and discard O-ring seal.
Clean O-ring groove and O-ring surfaces on pump and chain case cover. Take care not to scratch or gouge sealing surface.
INSTALLATION
Install new O-ring into groove Water Pump Body
Install water pump to chain case cover. Tighten screws to 12 N·m (105 in. lbs.)
Rotate pump by hand to check for freedom of movement.
Position pulley on pump. Install screws and tighten to 30 N·m (250 in. lbs.)
Install accessory drive belt. Refer to procedure in this section.
Install right front lower fender shield.
Refill Cooling System. Refer to procedure in this section.

Aug 14, 2010 | 1990 Dodge Caravan

1 Answer

Step by step to replace water pump on a 1995 chevrolet camro.


Water Pump - REMOVAL & INSTALLATION
CAUTION When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
3.4L ENGINE
(see Figures 1 and 2)
  1. Disconnect the negative battery cable.
  2. Drain the cooling system into a suitable container.
  3. Remove the air intake duct.
  4. Remove the top coil of the ignition coil pack.
  5. Loosen the tensioner pulley bolt/screw.
  6. Disconnect the heater hose from the water pump.
  7. Loosen the water pump pulley bolts/screws.
  8. Unfasten the power steering bracket bolts/screws.
  9. Remove the serpentine drive belt.
  10. Remove the water pump pulley.
  11. Remove the power steering pump bracket and swing the bracket and pump aside. Do NOT disconnect the power steering lines from the pump.
  12. Unfasten the water pump and engine front cover bolts/screws, then remove the water pump assembly from the vehicle.
  13. Remove and discard the gasket and thoroughly clean the gasket mating surfaces.
9940b19.jpg

Fig. 1: Exploded view of the water pump mounting - 3.4L engine

To install:

  1. Position a new water pump gasket, then install the pump. Secure using all of the water pump retaining bolts/screws, except the bottom three, and tighten to 33 ft. lbs. (45 Nm).
  2. Install the engine front cover bolts/screws and tighten to 16 ft. lbs. (21 Nm) for 1993-94 vehicles, or to 97 inch lbs. (11 Nm) for 1995 vehicles.
371be42.jpg

Fig. 2: Water pump retaining bolt tightening sequence
  1. Install the three bottom water pump retaining screws and tighten to 89 inch lbs. (10 Nm).
  2. Place the power steering pump into position and install the pump bracket.
  3. Install the water pump pulley.
  4. Install the serpentine drive belt.
  5. Install the power steering pump bracket retaining bolts and tighten to 30 ft. lbs. (40 Nm).
  6. Connect the heater hose to the water pump.
  7. Install the top coil to the ignition coil pack.
  8. Attach the electrical connector to the alternator.
  9. Install the air inlet duct and air cleaner assembly.
  10. Connect the negative battery cable.
  11. Fill the cooling system. Start the engine and check for leaks.


3.8L Engine
  1. Disconnect the negative battery cable.
  2. Drain the cooling system into a suitable container.
  3. Remove the serpentine belt.
  4. Disconnect the radiator inlet hose from the water pump.
  5. Unfasten the water pump pulley bolts/screws and remove the pulley.
  6. Remove the water pump pulley retaining bolts, then remove the pump from the vehicle.
  7. Remove and discard the gasket and thoroughly clean the gasket mating surfaces

To install:
  1. Position a new water pump gasket, then install the pump. Secure using the water pump retaining bolts/screws and tighten to 11 ft. lbs. (15 Nm), plus an additional 80 degree rotation.
  2. Install the water pump pulley and retaining bolts. Tighten to 115 inch lbs. (13 Nm).
  3. Install the serpentine drive belt.
  4. Connect the radiator inlet hose to the water pump.
  5. Connect the negative battery cable.
  6. Fill the cooling system. Start the engine and check for leaks.

5.7L ENGINE
  1. Unplug the electrical connector from the cooling fan.
  2. For 1993-95 vehicles, remove the right side cooling fan.
  3. For 1996-98 vehicles, remove both cooling fan assemblies.
  4. Place a suitable drain pan under the vehicle, then remove the block coolant drain plug and the knock sensor. Drain the radiator.
  5. Install the drain plug and knock sensor.
  6. Remove the air intake duct and air cleaner.
  7. Disconnect the upper and lower radiator hoses from the water pump.
  8. Remove the heater hoses from the water pump and throttle body.
  9. Unplug the electrical connector from the coolant sensor.
  1. Unfasten the retainers and reposition the ignition coil and bracket.
  2. If equipped, remove the air pump and bracket.
  3. Unfasten the water pump attaching bolts, then remove the water pump and discard the gasket. Remove the shaft coupling and water pump driveshaft seals, if necessary.
  1. Thoroughly clean the gasket mating surfaces
To install:
  1. If removed, install the shaft coupling and water pump driveshaft using J 39089 or equivalent water pump driveshaft O-ring installer.
  2. Install the water pump with a new gasket. Tighten the bolts to 30-32 ft. lbs. (41-43 Nm).
  3. If equipped, install the air pump and bracket.
  4. Reposition and secure the ignition coil and bracket.
  5. Attach the coolant sensor connector.
  6. Connect the heater hoses to the water pump and throttle body.
  7. Connect the upper and lower radiator hoses to the water pump.
  8. Install the air cleaner and air inlet duct.
  9. Install the electric cooling fan(s), then attach the electrical connector.
  10. Refill the cooling system.
  11. Connect the negative battery cable, then start the engine and check for leaks.


Hope helps (remember rated this).

Jul 01, 2010 | 1995 Chevrolet Camaro

1 Answer

Water pump is out. How do I get id out to replace


is it a 4 or a 6 cylinder engine, well you need to take off the fan clutch if it has one if not skip the step; its just 4 screws, then take off the acc belt, then take off the hose that goes from the radiator to the water pump; at the water pump, then remove the screws holding the water pump; make note what screw goes where some screws may be different sizes; in some 4 cyl 2.3L engines the timing belt cover has to be removed to remove the water pump, then remove the water pump, scrap off all gasket residue from the surface of the engine, take automotive silicone gasket maker and apply a small amount to the new water pump and level it out then put the included gasket over the silicone, then let it set for a couple of minutes, apply a bit more of silicone over the gasket and again let it set then replace the water pump, replace the screws and tighten all of them snug then go back and torque them between 20 and 25ft lb, replace the water hose, replace timming belt cover if removed, replace acc belt, and finally replace the fan clutch and your all set i hope you can get the job done

Jul 27, 2009 | Ford Ranger Cars & Trucks

1 Answer

INSTALLING A NEW WATER PUMP



REMOVAL
  1. Drain Cooling System.
  2. Remove accessory drive belt.
  3. Remove right front lower fender shield.
  4. Remove water pump pulley bolts and remove pulley.
    1. Remove water pump mounting screws. Remove water pump.
    2. Remove and discard O-ring seal.
    3. Clean O-ring groove and O-ring surfaces on pump and chain case cover. Take care not to scratch or gouge sealing surface.
    INSTALLATION
    1. Install new O-ring into groove.
    2. Install water pump to chain case cover. Tighten screws to 12 Nm (105 inch lbs.) .
    3. Rotate pump by hand to check for freedom of movement.
    4. Position pulley on pump. Install screws and tighten to 30 Nm (250 inch lbs.) .
    5. Install accessory drive belt.
    6. Install right front lower fender shield.
    7. Refill Cooling System.

Jul 03, 2009 | 2000 Dodge Caravan

1 Answer

Power steering pump leaking dry. 2003 silverado. coming from back of pump


Remove the pump, remove reservoir cover from back pump, by us screwing centre bolt.
Replace O'ring seal on pump, refit and refill.

Aug 02, 2008 | Chevrolet Silverado Cars & Trucks

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