Sebring 2006

Oil Pump

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Inspection



2.4L Engine
  1. Clean all the parts thoroughly. The mating surface of the oil pump should be smooth. Replace the pump cover if is scratched or grooved.
  2.  
  3. Lay a straightedge across the pump cover surface. If a 0.001 in. (0.025mm) feeler gauge can be inserted between the cover and the straight edge, the cover should be replaced.
  4.  
  5. Measure the thickness and diameter of the outer rotor. If the outer rotor thickness measures 0.370 in. (9.40mm) or less, or if the diameter is 3.148 in. (79.95mm) or less, replace the outer rotor.
  6.  
  7. If the inner rotor measures 0.370 in. (9.40mm) or less, replace the inner rotor.
  8.  
  9. Slide the outer rotor into the pump housing, press it to one side with your fingers and measure the clearance between the rotor and the housing. If the measurement is 0.015 in. (0.39mm) or more, replace the housing only if the outer rotor is within specification.
  10.  
  11. Install the inner rotor into the pump housing. If the clearance between the inner and the outer rotors is 0.008 in. (0.203mm) or more, replace both rotors.
  12.  
  13. Place a straightedge across the face of the pump housing, between the bolt holes. If a feeler gauge of 0.004 in. (0.102mm), or more can be inserted between the rotors and the straightedge, replace the pump assembly, ONLY if the rotors are within specifications.
  14.  
  15. Inspect the oil pressure relief valve plunger for scoring and free operation in its bore. Small marks may be removed with 400 grit wet or dry sandpaper.
  16.  
  17. The relief valve spring has a free length of approximately 2.39 inches (60.7mm). It should test between 18-19 pounds when compressed to 1.60 inches (40.5mm). Replace the spring that fails to meet specifications.
  18.  
  19. If the oil pressure is low and the pump is within specifications, inspect for worn engine bearings or other reasons for the oil pressure loss.
  20.  

2.7L Engine
  1. Disassemble the oil pump.
  2.  
  3. Clean all the oil pump components.
  4.  
  5. Inspect the mating surface of the oil pump housing and cover. Replace the oil pump if it is deeply scratched or grooved (minor surface scratches and polishing is normal).
  6.  
  7. Lay a straightedge across the pump cover surface. If a 0.001 in. (0.025mm) feeler gauge can be inserted between the cover and the straight edge, the cover should be replaced.
  8.  
  9. Measure the thickness and diameter of the outer rotor. If the outer rotor thickness measures 0.373 in. (9.474mm) or less, or if the diameter is 3.5108 in. (89.174mm) or less, replace the outer rotor.
  10.  
  11. If the inner rotor measures 0.373 in. (9.474mm) or less, replace the inner rotor.
  12.  
  13. Slide the outer rotor into the body, press it to one side with your fingers and measure the clearance between the rotor and body. If the measurement is 0.015 in. (0.39mm) or more, replace the body only if the outer rotor is within specifications.
  14.  
  15. Install the inner rotor into the body. If the clearance between the inner and the outer rotors is 0.008 in. (0.20mm) or more, replace both rotors.
  16.  
  17. Place a straightedge across the face of the body, between the bolt holes. If a feeler gauge of 0.003 in. (0.077mm) or more can be inserted between the rotors and the straightedge, replace the pump assembly ONLY if the rotors are within specification.
  18.  
  19. Inspect the oil pressure relief valve plunger for scoring and free operation in its bore. Small marks may be removed with 400 grit wet or dry sandpaper.
  20.  
  21. The relief valve spring has a free length of approximately 1.95 in. (49.5mm). It should test between 23-25 pounds when compressed to 1.34 in. (34mm). Replace the spring if it fails to meet specifications.
  22.  
  23. Assemble the oil pump.
  24.  

Removal & Installation



2.4L Engine

The oil drawn up through the pick-up tube is pressurized by the pump and routed through the full flow filter to the main oil galley running the length of the cylinder block. The oil pick-up, pump, and check valve provide oil flow to the main oil gallery. A vertical hole at the No. 5 bulkhead routes pressurized oil through a restrictor up past a cylinder head bolt to an oil galley running the length of the cylinder head. The camshaft journals are slotted to allow pressurized oil to pass into the bearing cap cavities. Small holes in the bearing caps direct oil to the camshaft lobes.

Click image to see an enlarged view

Fig. Oil pump and related parts-2.4L engine

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove the engine support module:

    The negative battery cable
     
    The Crankshaft damper
     
    The timing belt and tensioner
     
    The camshaft sprocket
     
    The rear timing belt cover
     
    The oil pan
     
    The oil pick up tube
     
    The oil pump and discard the gasket
     

  6.  
  7. Clean all the mating surfaces of any residual gasket material.
  8.  

To install:

  1. Prime the oil pump before installation.
  2.  
  3. Install or connect the following:

    The oil pump with the flats aligned with the crankshaft flats and torque the bolts to 21 ft. lbs. (28 Nm)
     
    The new front crankshaft seal
     
    The crankshaft sprocket
     
    The oil pick up tube and oil pan
     
    The camshaft sprocket
     
    The rear timing belt cover
     
    The timing belt and tensioner
     
    The front timing belt cover
     
    The Crankshaft damper
     
    The negative battery cable
     

  4.  
  5. Fill the engine with the proper amount of clean oil.
  6.  
  7. Start the vehicle, check for leaks and repair if necessary.
  8.  

2.7L Engines
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove the engine support module:

    The negative battery cable
     
    The Crankshaft damper
     
    The timing chain cover
     
    The timing chain and sprockets
     
    The oil pan
     
    The oil pick up tube and O-ring and make certain that the crankshaft is at 60° After Top Dead Center (ATDC)
     
    The oil pump

    Click image to see an enlarged view

    Fig. Oil pump and pick-up tube-2.7L engine



    Click image to see an enlarged view

    Fig. Crankshaft positioned at 60 degrees ATDC-2.7L engine

     

  6.  

To install:

  1. Prime the pump before installation by filling the rotor cavity with clean engine oil.
  2.  
  3. Install or connect the following:

    The oil pump over the crankshaft and torque the bolts to 21 ft. lbs. (28 Nm)
     
    The oil pick up tube with a new O-ring and torque the bolt to 21 ft. lbs. (28 Nm)
     
    The oil pan with a new gasket
     
    The timing chain and sprockets
     
    The timing chain and cover
     
    The Crankshaft damper
     
    The negative battery cable
     

  4.  
  5. Fill the engine with the proper amount of clean oil.
  6.  
  7. Start the vehicle, check for leaks and repair if necessary.
  8.  

 
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