Inspect Oil Pump and Replace on Dodge Dakota?

The procedure for oil pump inspecting and how to replace oil pump.

All this details are provided with required details and helpful diagrams.

The complete procedure is as follows: -----

Inspection

WARNING

Oil pump pressure relief valve and spring should not be removed from the oil pump. If these components are disassembled and or removed from the pump the entire oil pump assembly must be replaced.

1. Clean all parts thoroughly. Mating surface of the oil pump housing should be smooth. If the pump cover is scratched or grooved the oil pump assembly should be replaced.
2. Lay a straight edge across the pump cover surface. If a 0.025 mm (0.001 in.) feeler gauge can be inserted between the cover and the straight edge the oil pump assembly should be replaced.
3. Measure the thickness of the outer rotor. If the outer rotor thickness measures at 12.005 mm (0.472 in.) or less the oil pump assembly must be replaced.
4. Measure the diameter of the outer rotor. If the outer rotor diameter measures at 85.925 mm (3.382 in.) or less the oil pump assembly must be replaced.
5. Measure the thickness of the inner rotor. If the inner rotor thickness measures at 12.005 mm (0.472 in.) or less then the oil pump assembly must be replaced.
6. Slide outer rotor into the body of the oil pump. Press the outer rotor to one side of the oil pump body and measure clearance between the outer rotor and the body. If the measurement is 0.235mm (0.009 in.) or more the oil pump assembly must be replaced.
7. Install the inner rotor in the into the oil pump body. Measure the clearance between the inner and outer rotors. If the clearance between the rotors is .150 mm (0.006 in.) or more the oil pump assembly must be replaced.
8. Place a straight edge across the body of the oil pump (between the bolt holes); if a feeler gauge of .095 mm (0.0038 in.) or greater can be inserted between the straightedge and the rotors, the pump must be replaced. 
   
   NOTE

   The 3.7L/4.7L oil pump is released as an assembly; there are no subassembly components. In the event the oil pump is not functioning or out of specification it must be replaced as an assembly.
   
   
   
   
   Fig. Checking oil pump cover plate
   
   
   
   
   Fig. Measuring outer rotor thickness
   
   
   
   

   Fig. Measuring inner rotor thickness
   
   
   
   

   Fig. Measuring clearance between pump housing and outer rotor
   
   
   
   

   Fig. Measuring clearance between inner and outer rotor
   
   
   
   

   Fig. Measuring clearance between rotors and pump body cover

Removal & Installation

3.7L Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Remove or disconnect the following:
   
   
   Oil Pan

   Timing chain cover

   Timing chains and tensioners

   Oil pump
3. Installation is the reverse of removal. Torque the pump bolts, in sequence, to 21 ft. lbs. (28 Nm), 
   
   
   
   Fig. Oil pump bolt torque sequence-3.7L and 4.7L engines

4.7L Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   
   Negative battery cable

   Oil pan

   Oil pump pick-up tube

   Timing chains and tensioners

   Oil pump

To install:

1. Install or connect the following:
   
   
   Oil pump. Tighten the bolts to 21 ft. lbs. (28 Nm).

   Timing chains and tensioners

   Oil pump pick-up tube

   Oil pan

   Negative battery cable
2. Fill the crankcase to the correct level.
3. Start the engine and check for leaks.

These details will help.

Thanks.           

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Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html