Tuesday, November 22, 2011

How to replace Water Pump on Dodge Ram Models?

Water pump is important part/component for car cooling system.Water pump maintenance is required,to keep water pump free from problems.But in case if it gets faulty then it has to be replaced.

If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

The procedure to replace cars water pump is as follows :----

Water Pump


NEVER open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Avoid physical contact with the coolant. Wear protective clothing and eye protection. Always drain coolant into a sealable container. Clean up spills as soon as possible. Coolant can be reused as long as it is reasonably clean and free of debris. If you suspect contamination, or if it is more than a couple of years old, it should be replaced.

Common Steps
  1. Disconnect the battery negative cable(s).
  2. Drain the cooling system.
  3. Remove the accessory drive belt.
  4. Remove the lower radiator hose (except Diesel).
  5. Disconnect the heater hose from the pump, if fitted.

Most cooling system hoses use "constant tension" hose clamps. When removing or installing, use a tool designed for servicing this type of clamp. The clamps are stamped with a letter or number on the tongue. If replacement is necessary, use only an OEM clamp with a matching ID.

Click image to see an enlarged view
Fig. Heater hose pipe O-ring (arrow): twist gently when removing or installing; check condition; lubricate with coolant before installing

Always wear safety glasses when servicing contact tension clamps.

  1. Always use a new gasket when installing the water pump. Clean mating surfaces thoroughly before installation.
  2. This would be a good time to replace radiator hoses. At least, inspect them carefully for aging or other damage.
  3. If the heater hose pipe was removed, use thread sealant or equivalent on the pipe threads (if threaded), or lubricate any O-rings with coolant before installing.
  4. Check the accessory belt routing against the plate in the engine compartment before starting engine.
  5. Allow the engine to reach operating temperature and check for leaks.
2.5L Engine

The 2.5L engine has a reverse (CCW) rotating water pump. The letter "R" is stamped into the back of the pump impeller for ID purposes. Engines from previous model years may be equipped with a forward (CW) rotating water pump. Installing the wrong pump will cause engine damage. Check any replacement parts before installation.

  1. Carry out the "Common Steps" above.
  2. Remove the power steering pump.
  3. Remove the four water pump bolts and remove the pump. Note that one bolt is longer than the others. Be sure it is properly installed during installation.
To install:
  1. Reverse the removal procedure.
  2. Install the new gasket with the silicone bead facing the water pump.
  3. Tighten mounting bolts to 22 ft. lbs. (30 Nm).

Click image to see an enlarged view
Fig. Reverse rotating water pump with impeller mark (1)-2.5L
3.9L, 4.7L, 5.2L, 5.9L, 8.0L Gasoline Engines
  1. Carry out the "Common Steps" above.
  2. Remove the upper radiator hose.
  3. Remove the fan and shroud assembly.
  4. On engines except 4.7L, remove the four water pump pulley bolts and remove the pulley.
  5. Remove the heater hose pipe mounting bolt, if fitted.
  6. On engines except 4.7L, loosen the bypass hose clamp at the water pump.
  7. Remove the seven water pump mounting bolts and, on the 4.7L, one nut.

Bolts may be of different lengths. Be sure to note their locations.

To install:
  1. Reverse the removal procedure.
  2. The 8.0L engine uses an O-ring to seal. Use a new one and lubricate it with petroleum jelly before installation of the pump. Also, use sealant on the threads of the heater hose pipe, position the pipe as shown before installing the pump and tighten the nut to 12 ft. lbs. (16 Nm).
  3. On pushrod engines, connect the bypass hose to the pump while installing it.
  4. Tighten the bolts to 30 ft. lbs. (40 Nm) on pushrod engines, 40 ft. lbs. (54 Nm) on the 4.7L engine.
  5. Spin pump to ensure the impeller is not rubbing against the timing chain case.
  6. When installing the heater hose pipe, ensure that the slot in the pipe bracket is bearing against the mounting bolt. This will hold the pipe in as far as possible to prevent leaks.
  7. Tighten pulley bolts to 20 ft. lbs. (27 Nm) on V-6 and V-8, 16 ft. lbs. (22 Nm) on the V-10.

Click image to see an enlarged view
Fig. Water pump mounting hardware-4.7L

Click image to see an enlarged view
Fig. Use a prybar to keep the water pump from rotating while pulley bolts are removed

Click image to see an enlarged view
Fig. Bypass hose clamp (arrow) must be tended to before removing the pump

Click image to see an enlarged view
Fig. Water pump bolts differ in length; note check location before installation-3.9L, 5.2L, and 5.9L gasoline engine shown

Click image to see an enlarged view
Fig. After removing the bolts, pull off the pump and place it in a safe location

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Fig. Make sure the heater hose fitting is positioned as shown -V-10 engine
  1. Carry out the "Common Steps" above.

Removal of the radiator hoses is not required.

  1. Remove the wiring harness bolt from the water pump and arrange the harness out of the way.
  2. Remove the water pump mounting bolts and remove the pump.
To install:
  1. Use a new O-ring and lubricate it with petroleum jelly before installation.
  2. Tighten mounting bolts to 18 ft. lbs. (24 Nm).

Click image to see an enlarged view
Fig. Water pump mounting-diesel

This details will help.Thanks.
For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.


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Car has no spark?


How to troubleshoot car battery?


How to test starter solenoid?



How to test cars starter?


How to replace starter in car?


car will turn over but will not start?


Car wont start?


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