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autodoc_2000, Auto Technician
Category: Dodge
Satisfied Customers: 2563
Experience:  ASE Master Tech W/Advanced Engine Performance
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2001 Dodge Ram 1500 4WD 360 V8 water pump replacement

Customer Question

2001 Dodge Ram 1500 4WD 360 V8 water pump replacement procedure?
Submitted: 9 years ago.
Category: Dodge
Expert:  autodoc_2000 replied 9 years ago.

On the third illustration #1 is pointing at a bypass hose. You should replace this hose with the water pump. It is exposed to high heat and is usually the first hose to spring a leak.

The water pump on all models can be removed without discharging the air conditioning system (if equipped).
The water pump on all gas powered engines is bolted directly to the engine timing chain case/cover.
On all 3.9L/5.2L/5.9L gas powered engines, a gasket is used as a seal between the water pump and timing chain case/cover.
If water pump is replaced because of bearing/shaft damage or leaking shaft seal, the mechanical cooling fan assembly should also be inspected. Inspect for fatigue cracks, loose blades or loose rivets that could have resulted from excessive vibration. Replace fan if any of these conditions are found. Also check condition of the thermal viscous fan drive.

  1. Disconnect negative cable from battery.
  2. Drain cooling system. Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse.
  3. Remove windshield washer reservoir tank from radiator fan shroud.
  4. Disconnect the coolant reserve/overflow tank to radiator hose at the tank.


  • Remove the four fan shroud mounting bolts at the radiator. Do not attempt to remove shroud from vehicle at this time. WARNING: CONSTANT TENSION HOSE CLAMPS ARE USED ON MOST COOLING SYSTEM HOSES. WHEN REMOVING OR INSTALLING, USE ONLY TOOLS DESIGNED FOR SERVICING THIS TYPE OF CLAMP, SUCH AS SPECIAL CLAMP TOOL (NUMBER 6094). SNAP-ON CLAMP TOOL (NUMBER HPC20) MAY BE USED FOR LARGER CLAMPS. ALWAYS WEAR SAFETY GLASSES WHEN SERVICING CONSTANT TENSION CLAMPS. CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary, use only an original equipment clamp with a matching number or letter.
  • Remove upper radiator hose at radiator.
  • graphic


  • The thermal viscous fan drive is attached (threaded) to the water pump hub shaft. Remove the fan/fan drive assembly from water pump by turning the mounting nut counterclockwise (is viewed from front). Threads on the fan drive are RIGHTHAND. A Snap-On 36 MM Fan Wrench (number SP346 from Snap-On Cummins Diesel Tool Set number 2017DSP) can be used with Special Tool 6958 Spanner Wrench and Adapter Pins 8346 to prevent the pulley from rotating.
  • If water pump is being replaced, do not unbolt fan blade assembly from the thermal control fan drive.
  • Remove fan blade/fan drive and fan shroud as an assembly from vehicle.
  • After removing fan blade/fan drive assembly, do not place the thermal viscous fan drive in the horizontal position. If stored horizontally, the silicone fluid in the viscous drive could drain into its bearing assembly and contaminate the bearing lubricant.
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  • Remove accessory drive belt.
  • Remove the lower radiator hose and heater hose from water pump.
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    Loosen heater hose coolant return tube mounting bolt and remove tube from water pump. Discard the old tube O-ring.


    1. Remove the seven water pump mounting bolts.
    2. Loosen the clamp at the water pump end of bypass hose. Slip the bypass hose from the water pump while removing pump from vehicle. Do not remove the clamp from the bypass hose.
    3. Discard old gasket. CAUTION: Do not pry the water pump at timing chain case/cover. The machined surfaces may be damaged resulting in leaks.

    Clean gasket mating surfaces as necessary.

    Visually inspect the water pump and replace if it has any of the following conditions:

    • The body is cracked or damaged
    • Water leaks from the shaft seal. This is evident by traces of coolant below the vent hole
    • Loose or rough turning bearing. Also inspect thermal fan drive
    • Impeller rubbing the pump body


    1. Clean gasket mating surfaces.
    2. Using a new gasket, install water pump to engine as follows: Guide water pump nipple into bypass hose as pump is being installed. Install water pump bolts. Tighten water pump mounting bolts to 40 Nm (30 ft. lbs.) torque.
    3. Position bypass hose clamp to bypass hose.
    4. Spin water pump to be sure that pump impeller does not rub against timing chain case/cover.
    5. Install a new O-ring to the heater hose coolant return tube. Coat the new O-ring with anti freeze before installation.
    6. Install coolant return tube and its mounting bolt to engine. Be sure the slot in tube bracket is bottomed to mounting bolt. This will properly position return tube.
    7. Connect radiator lower hose to water pump.
    8. Connect heater hose and hose clamp to coolant return tube.
    9. Install drive belt.
    10. Position fan shroud and fan blade/viscous fan drive assembly to vehicle as a complete unit.
    11. Install fan shroud.
    12. Install fan blade/viscous fan drive assembly to water pump shaft.
    13. Fill cooling system.
    14. Connect negative battery cable.
    15. Start and warm the engine. Check for leaks.
    autodoc_2000 and 10 other Dodge Specialists are ready to help you
    Customer: replied 9 years ago.
    Thanks for the prompt reply. I think we can get it done. If I run into a snag is there a way to re-contact you ? Customer
    Customer: replied 9 years ago.
    The bypass hose came apart upon removal of pump assembly. Is there a way to re-install along with a hose clamp without removal of more engine parts ?: