Oil Pump: Service and Repair

Oil Pump

Special Tool(s)





Removal

CAUTION: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan may cause engine failure.

1. Remove the engine front cover.
2. Rotate the crankshaft clockwise and align the timing marks on the variable camshaft timing (VCT) assemblies as shown.





3. NOTE: The special tool will hold the camshafts in the top dead center (TDC) position.

Install the special tool onto the flats of the LH camshafts.





4. NOTE: The special tool will hold the camshafts in the TDC position.

Install the special tool onto the flats of the RH camshafts.





5. Remove the 3 bolts and the RH VCT housing.





6. Remove the 3 bolts and the LH VCT housing.





7. Remove and discard the VCT housing seals.





8. Remove the 2 bolts and the primary timing chain tensioner.





9. Remove the primary timing chain tensioner arm.





10. Remove the 2 bolts and the lower LH primary timing chain guide.





11. Remove the primary timing chain.





12. Remove the crankshaft timing chain sprocket.





13. Remove the 2 oil pump screen and pickup tube bolts.





14. Remove the 3 oil pump bolts.
^ Rotate the oil pump clockwise and separate the oil pump from the oil pump screen and pickup tube.
^ Remove the oil pump.
^ Discard the oil pump screen and pickup tube O-ring seal.





Installation

1. NOTE: Install a new oil pump screen and pickup tube O-ring seal prior to installing the oil pump.

Position the oil pump onto the crankshaft and rotate counterclockwise to position the pump onto the oil pump screen and pickup tube.
^ Install the 3 bolts and tighten to 10 Nm (89 lb-in).





2. Install the 2 oil pump screen and pickup tube bolts.
^ Tighten to 10 Nm (89 lb-in).





3. Install the crankshaft timing chain sprocket.





4. Install the primary timing chain with the colored links aligned with the timing marks on the VCT assemblies and the crankshaft sprocket.





5. Install the LH primary timing chain guide and the 2 bolts.
^ Tighten to 10 Nm (89 lb-in).





6. Install the primary timing chain tensioner arm.





7. Reset the primary timing chain tensioner.
^ Rotate the lever counterclockwise.
^ Using a soft-jawed vise, compress the plunger.
^ Align the hole in the lever with the hole in the tensioner housing.
^ Install a suitable lockpin.





8. NOTE: It may be necessary to rotate the crankshaft slightly to remove slack from the timing chain and install the tensioner.

Install the primary tensioner and the 2 bolts.
^ Tighten to 10 Nm (89 lb-in).
^ Remove the lockpin.





9. As a post-check, verify correct alignment of all timing marks.





10. Install new VCT housing seals.





11. CAUTION: Make sure the dowels on the variable camshaft timing (VCT) housing are fully engaged in the cylinder head prior to tightening the bolts. Failure to follow this process will result in severe engine damage.

Install the LH VCT housing and the 3 bolts.
^ Tighten in the sequence shown to 10 Nm (89 lb-in).





12. CAUTION: Make sure the dowels on the variable camshaft timing (VCT) housing are fully engaged in the cylinder head prior to tightening the bolts. Failure to follow this process will result in severe engine damage.

Install the RH VCT housing and the 3 bolts.
^ Tighten in the sequence shown to 10 Nm (89 lb-in).





13. Install the engine front cover.