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
REMOVAL & INSTALLATION
CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
2.0L And 2.4L Engines
This engine uses a die-cast aluminum body water pump with a stamped steel impeller. The water pump bolts directly to the block. Cylinder block-to-water pump sealing is provided by a large rubber O-ring. The water pump is driven by the timing belt, that must be removed to service the water pump.
- Before servicing the vehicle, refer to the Precautions section.
- Disconnect the negative battery cable from the left shock tower.
NOTEThe ground cable is equipped with an insulator grommet which should be placed on the stud to prevent the negative battery cable from accidentally grounding.
NOTEThis procedure requires removing the engine timing belt and the auto-tensioner. The factory specifies that the timing marks should always be aligned before removing the timing belt. Set the engine at Top Dead Center (TDC) on No. 1 compression stroke. This should align all timing marks on the crankshaft sprocket and both camshaft sprockets. - Drain the cooling system.
- Remove or disconnect the following:
NOTEDo not disconnect the power steering fluid lines.
WARNINGWith the timing belt removed, DO NOT rotate the camshaft or crankshaft or damage to the engine could occur.
NOTEDo not allow the camshafts to turn when the camshaft sprockets are being removed.
Right inner splash shieldAccessory drive belts and support the engineRight motor mountPower steering pump bracket bolts and move the pump/bracket assembly aside
Right engine mount bracketTiming belt front coversTiming belt tensioner and timing belt by loosening the tensioner screws
Camshaft sprockets
To install:
- Thoroughly clean all sealing surfaces. Replace the water pump if there are any cracks, signs of coolant leakage from the shaft seal, loose or rough turning bearings, damaged impeller or sprocket or sprocket flange loose or damaged.
- Install or connect the following:
WARNINGBe sure the O-ring is properly seated in the water pump groove before tightening the screws. An improperly located O-ring may cause damage to the O-ring and cause a coolant leak.
New rubber O-ring into the water pump
Water pump. Torque the bolts to 105 inch lbs. (12 Nm) - Pressurize the cooling system to 15 psi (103.4 kPa) and check for leaks. If okay, release the pressure and continue the engine assembly process.
- Install or connect the following:
NOTEDO NOT allow the camshafts to turn while the sprocket bolts are being tightened to maintain timing mark alignment.
WARNINGDo not attempt to compress the tensioner plunger with the tensioner assembly installed in the engine. This will cause damage to the tensioner and other related components. The tensioner MUST be compressed in a vise.
Rear timing belt coverCamshaft sprockets. Torque the bolts to 75 ft. lbs. (101 Nm)
Timing belt tensioner and timing belt. Properly tension the timing belt.Front upper and lower timing belt coversRight engine mount bracket and engine mountCrankshaft damper. Torque the center bolt to 105 ft. lbs. (142 Nm)Right inner splash shieldPower steering pump bracket and power steering pump. Torque the bracket mounting bolts to 40 ft. lbs. (54 Nm)Accessory drive belts. Properly tension the drive belts - Refill and bleed the cooling system.
- Start the engine and check for proper operation.
- Check and top off cooling system, if necessary.
2.0L Engine
This procedure requires removing the timing belt and auto-tensioner. The factory specifies that the timing marks should always be aligned before removing the timing belt. Set the engine at Top Dead Center (TDC) on the No. 1 cylinder compression stroke. This should align all timing marks on the crankshaft sprocket and both camshaft sprockets.
- Before servicing the vehicle, refer to the Precautions section.
- Disconnect battery negative cable from remote negative terminal on shock tower and properly isolate to prevent accidental reconnection.
CAUTIONThis operation must only be performed on a cold engine. - Drain the engine coolant.
- Remove or disconnect the following:
WARNINGWith the timing belt removed, DO NOT rotate the camshaft or crankshaft or damage to the engine may occur.
Negative battery cableRight inner splash shieldAccessory drive beltsProperly support the engine and remove the right motor mountTiming belt, tensioner and camshaft sprockets
To install:
- Thoroughly clean all sealing surfaces.
- Replace the water pump if there are any cracks, signs of coolant leakage from the shaft seal, loose or rough turning bearings, damaged impeller or sprocket or loose or damaged sprocket flange.
- Install or connect the following:
NOTEBe sure the O-ring is properly seated in the water pump groove before tightening the screws.
New water pump O-ring
Water pump and torque the bolts to 105 inch lbs. (12 Nm) in a crisscross pattern - Using a cooling system pressure tester, pressurize the cooling system to 15 psi (103 kPa) and check for leaks. If okay, release the pressure and continue the engine assembly process.
- Rotate the water pump by hand to check for freedom of movement.
- Install or connect the following:
WARNINGDO NOT allow the camshafts to turn while the sprocket bolts are being tightened.
WARNINGDo not attempt to compress the tensioner plunger with the tensioner assembly installed in the engine. This will cause damage to the tensioner and other related components. The tensioner MUST be compressed in a vise.
Rear timing belt coverCamshaft sprocket(s), timing belt and tensioner
Timing belt coversRight engine mount bracket and mount - Remove the engine support.
Crankshaft damperRight inner splash shieldAccessory drive belts - Refill and bleed the cooling system.
- Start the engine and check for proper operation.
- Check and top off the cooling system, if necessary.
2.4L Engine
- Before servicing the vehicle, refer to the Precautions section.
- Disconnect battery negative cable from remote negative terminal on shock tower and properly isolate to prevent accidental reconnection.
CAUTIONThis operation must only be performed on a cold engine. - Drain the cooling system.
- Remove or disconnect the following:
To install:
- Clean all mating surfaces of any residual gasket material
- Install or connect the following:
New O-ring gasketWater pump and torque the bolts to 117 inch lbs. (14 Nm)Alternator brace and torque the bolts to 17 ft. lbs. (23 Nm)Timing belt tensioner pulleyNegative battery cable - Fill the cooling system to the proper level.
- Start the vehicle, check for leaks and repair if necessary.
This engine uses a die-cast aluminum body water pump with a stamped steel impeller. The water pump bolts directly to the block. Cylinder block-to-water pump sealing is provided by a large rubber O-ring. The water pump is driven by the timing belt that must be removed to service the water pump.
- Before servicing the vehicle, refer to the Precautions Section.
- Disconnect the negative battery cable from the left shock tower.
NOTEThe ground cable is equipped with an insulator grommet which should be placed on the stud to prevent the negative battery cable from accidentally grounding.
NOTEThis procedure requires removing the engine timing belt and the auto-tensioner. The factory specifies that the timing marks should always be aligned before removing the timing belt. Set the engine at Top Dead Center (TDC) on No. 1 compression stroke. This should align all timing marks on the crankshaft sprocket and both camshaft sprockets. - Drain the cooling system.
- Remove or disconnect the following:
NOTEDo not disconnect the power steering fluid lines.
WARNINGWith the timing belt removed, DO NOT rotate the camshaft or crankshaft or damage to the engine could occur.
NOTEDo not allow the camshafts to turn when the camshaft sprockets are being removed.
The right inner splash shieldThe accessory drive belts and support the engineThe right motor mountThe power steering pump bracket bolts and move the pump/bracket assembly aside
The right engine mount bracketThe timing belt front coversThe timing belt tensioner and timing belt by loosening the tensioner screws
The camshaft sprockets
To install:
- Thoroughly clean all sealing surfaces. Replace the water pump if there are any cracks, signs of coolant leakage from the shaft seal, loose or rough turning bearings, damaged impeller or sprocket or sprocket flange loose or damaged.
- Install a NEW rubber O-ring into the water pump.
NOTEBe sure the O-ring is properly seated in the water pump groove before tightening the screws. An improperly located O-ring may cause damage to the O-ring and cause a coolant leak. - Install the water pump. Torque the bolts to 105 inch lbs. (12 Nm).
- Pressurize the cooling system to 15 psi (103.4 kPa) and check for leaks. If no leaks are found, release the pressure and continue the engine assembly process.
- Install or connect the following:
NOTEDO NOT allow the camshafts to turn while the sprocket bolts are being tightened to maintain timing mark alignment.
WARNINGDo not attempt to compress the tensioner plunger with the tensioner assembly installed in the engine. This will cause damage to the tensioner and other related components. The tensioner MUST be compressed in a vise.
The rear timing belt coverThe camshaft sprockets. Torque the bolts to 75 ft. lbs. (101 Nm)
The timing belt tensioner and timing belt. Properly tension the timing belt.The front upper and lower timing belt coversThe right engine mount bracket and engine mountThe crankshaft damper. Torque the center bolt to 105 ft. lbs. (142 Nm)The right inner splash shieldThe power steering pump bracket and power steering pump. Torque the bracket mounting bolts to 40 ft. lbs. (54 Nm)The accessory drive belts. Properly tension the drive belts - Refill and bleed the cooling system.
- Start the engine and check for proper operation.
- Check and top off cooling system, if necessary.
2.5L Engine
This procedure requires removing the timing belt and auto-tensioner. Set the engine at Top Dead Center (TDC) on the No. 1 cylinder compression stroke. This should align all timing marks on the crankshaft sprocket and both camshaft sprockets.
- Before servicing the vehicle, refer to the Precautions section.
- Disconnect battery negative cable from remote negative terminal on shock tower and properly isolate to prevent accidental reconnection.
CAUTIONThis operation must only be performed on a cold engine. - Drain the engine coolant.
- Remove or disconnect the following:
Negative battery cableAccessory drive belts and crankshaft damperSupport the engine and remove the right engine mountTiming belt coversTiming belt and tensionerWater pump mounting boltsWater pump
To install:
- Thoroughly clean all sealing surfaces. Inspect the pump for damage or cracks, signs of coolant leakage at the vent and excessive looseness or rough turning bearing. Any problems require a new pump.
- Install or connect the following:
WARNINGWet the O-ring with water to make installation easier; DO NOT use oil or grease.
NOTEFit the pump inlet opening over the water pipe and press the assembly together to force the pipe into the water pump.
New water inlet pipe O-ring.
New water pump gasket
Water pump and torque the pump-to-engine bolts to 20 ft. lbs. (27 Nm)Timing belt and timing belt tensioner. Set the timing belt tension.Timing belt coversRight engine mount. Remove the floor jack and engine block from underneath the engine.Crankshaft damperAccessory drive belts and adjust tensionNegative battery cable - Fill and bleed the engine cooling system.
- Start the engine and verify proper operation.
The water pump bolts directly to the engine block using a gasket for pump-to-block sealing. The pump is serviced as a unit. The 2.5L engine uses metal piping beyond the lower radiator hose to route coolant to the suction side of the water pump, located in the -V- of the cylinder banks. These pipes also have connections for thermostat bypass and heater return coolant hoses. The pipes use O-rings for sealing.
The water pump is driven by the timing belt which must be removed to service the water pump. Timing belt covers must be removed to access the timing belt.
- Before servicing the vehicle, refer to the Precautions section.
- Disconnect the negative battery cable from the left shock tower.
NOTEThe ground cable is equipped with an insulator grommet which should be placed on the stud to prevent the negative battery cable from accidentally grounding. - Drain the cooling system.
NOTEThis procedure requires removing the engine timing belt and the auto-tensioner. To help assure proper alignment at assembly, it may be helpful to set the engine at Top Dead Center (TDC) on No. 1 compression stroke. This should align all timing marks on the crankshaft sprocket and both camshaft sprockets. - Remove or disconnect the following:
Accessory drive beltsCrankshaft damperRight engine mount by safely supporting the engineTiming belt covers, in this order: upper left, upper right and lower coversTiming belt and tensionerWater pump by separating it from the water inlet pipe
To install:
- Thoroughly clean all sealing surfaces. Inspect the pump for damage or cracks, signs of coolant leakage at the vent and excessive looseness or rough turning bearing. Any problems require a new pump.
- Install or connect the following:
New O-ring on the water inlet pipe by wetting it with waterNew gasket on the water pumpWater pump. Torque the bolts to 20 ft. lbs. (27 Nm)Timing belt and timing belt tensioner by adjusting tensionTiming belt coversRight engine mountCrankshaft damperAccessory drive belts by adjusting tensionNegative battery cable - Refill and bleed the cooling system.
- Start the engine and verify proper operation.
2.7L Engine
- Before servicing the vehicle, refer to the Precautions section.
- Drain the cooling system.
- Remove or disconnect the following:
To install:
- Clean all mating surfaces of any residual gasket material.
- Install or connect the following:
Water pump with a new gasket and torque the bolts to 105 inch lbs. (12 Nm)Timing chain guides and chainTiming chain coverNegative battery cable - Fill the cooling system to the proper level.
- Start the vehicle, check for leaks and repair if necessary.
- Before servicing the vehicle, refer to the Precautions Section.
- Drain the cooling system.
- Remove or disconnect the following:
To install:
- Clean all mating surfaces of any residual gasket material.
- Install or connect the following:
The water pump with a new gasket and torque the bolts to 105 inch lbs. (12 Nm)The timing chain guides and chainThe timing chain coverThe negative battery cable - Fill the cooling system to the proper level.
- Start the vehicle, check for leaks and repair if necessary.
3.0L Engine
- Before servicing the vehicle, refer to the Precautions section.
- Disconnect battery negative cable from remote negative terminal on shock tower and properly isolate to prevent accidental reconnection.
CAUTIONThis operation must only be performed on a cold engine. - Drain the cooling system.
- Remove or disconnect the following:
Negative battery cableTiming beltThermostat and bracketWater pump and discard the gasket and O-ring
To install:
- Install or connect the following:
NOTELubricate O-ring with engine coolant
NOTEBe sure to torque the bolts in the proper sequence
Water pump with a new O-ring and gasket and torque the bolts to 17 ft. lbs. (23 Nm)
Bracket and torque the bolts to 17 ft. lbs. (23 Nm)
ThermostatTiming beltNegative battery cable - Fill the cooling system to the proper level.
- Start the vehicle, check for leaks and repair if necessary.
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This will help.Thanks.
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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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