Sunday, March 11, 2012

Camshaft, Bearings & Lifters Replacing For 2007 Ford Taurus?

The instructions are similar for 2006 and 2007 ford Taurus Car models.


Camshaft, Bearings & Lifters
INSPECTION
REMOVAL & INSTALLATION


The details are as follows :---------

Inspection



Bearings & Journals
Check the camshaft bores for size, taper, roundness, alignment and finish. If any of these exceed the specifications given in the engine rebuilding chart at the end of this section, install new bearings or cylinder heads.
Camshaft
Degrease the camshaft using safe solvent, clean all oil grooves. Visually inspect the cam lobes and bearing journals for excessive wear. If a lobe is questionable, check all lobes and journals with a micrometer.
Measure the lobes from nose to base and again at 90°. The lift is determined by subtracting the second measurement from the first. If all exhaust lobes and all intake lobes are not identical, the camshaft must be reground or replaced. Measure the bearing journals and compare to the specifications. If a journal is worn there is a good chance that the cam bearings are worn too, requiring replacement.
If the lobes and journals appear intact, place the front and rear camshaft journals in V-blocks and rest a dial indicator on the center journal. Rotate the camshaft to check for run-out, if deviation exceeds specification, replace the camshaft.
Measure the camshaft journal diameter at the points shown in the accompanying illustration. If the If the diameters do not conform to specifications, replace the camshaft.
Click image to see an enlarged view
Fig. Checking the camshaft lobe lift


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Fig. Checking the camshaft run-out


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Fig. Checking the camshaft journal diameter


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Fig. Inspect the lobes of the camshaft and . . .


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Fig. . . . the lifter bores for scoring or other damage
Lifters


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Fig. Inspect the rollers on the lifters for wear
  1. Thoroughly clean the lifter and its bore, then check for pitting, scoring or excessive wear.
  2. On flat lifters, the bottom should be flat and not concave.
  3. If equipped with a roller, the roller should rotate freely without excessive play.

Removal & Installation



3.0L (VIN U, 2) Engines

NOTE
If the rocker arms, pushrods or lifters are to be reused, they must be installed in the same positions they were removed from.

  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove the engine from the vehicle and mount it on an engine stand.
  3. Remove or disconnect the following:

    Valve covers
    Rocker arms and pushrods
    Accessory drive belt and tensioner
    Alternator and brackets
    Intake manifold
    Valve lifter guide plate
    Valve lifters
    Crankshaft damper
    Oil pan
    Front cover
    Timing chain and gears
    Camshaft thrust plate
    Camshaft
To install:
Click image to see an enlarged view
Fig. Tighten the rocker arm nuts according to the position of the camshaft-3.0L (VIN U, 2) Engines

NOTE
If replacing the camshaft, the valve lifters must also be replaced.

  1. Install or connect the following:

    Camshaft
    Camshaft thrust plate and tighten the bolts to 84 inch lbs. (10 Nm)
    Timing chain and gears. Align the timing marks on the sprockets.
    Front cover
    Oil pan
    Crankshaft damper
    Valve lifters
    Valve lifter guide plate
    Intake manifold
    Alternator and brackets
    Accessory drive belt and tensioner
    Rocker arms and pushrods
    Valve covers
  2. Install the engine assembly into the vehicle.
  3. Start the engine and check for leaks and proper engine operation.
3.0L VIN S Engine
Left Side
  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove the timing drive components.
  3. Remove the water pump belt.
    CAUTION
    The OEM pulley is pressed on 0.18 inch (4.74 mm) past flush of the camshaft. The service pulley gets pressed on flush to the end of the camshaft.
  4. Using the tools illustrated, remove the water pump drive pulley and discard.
    CAUTION
    In order to make sure of correct sealing, do not scratch the camshaft.



    Click image to see an enlarged view
    Fig. Using the tools illustrated, remove the water pump drive pulley-3.0L (VIN S) Engine
  5. Using the tool illustrated, remove the camshaft oil seal and discard.

    Click image to see an enlarged view
    Fig. Using the tools illustrated, remove the camshaft oil seal-3.0L (VIN S) Engine
  6. Remove the intake camshaft oil seal retainer and discard the press-in-place gasket.
    CAUTION
    Record the camshaft bearing cap locations. The camshaft bearing caps are positional and must be installed in their original locations and orientations or engine damage can occur.
  7. Loosen the bolts for the left camshaft thrust caps.
  8. Loosen the left camshaft cap bolts in sequence to allow the camshafts to rise from the cylinder head and remove the caps.

    Click image to see an enlarged view
    Fig. Left camshaft cap loosening sequence-3.0L (VIN S) Engine
  9. Remove the camshafts.
To install:

NOTE
Be sure the camshaft bearing caps are installed in their original positions.

  1. Lubricate camshafts with engine oil and carefully position the camshafts into the cylinder head.
  2. Align the camshafts as illustrated
    CAUTION
    Do not install the camshaft journal thrust caps until all of the camshaft bearing caps have been installed, or damage to the thrust caps can occur.



    Click image to see an enlarged view
    Fig. Left camshaft alignment-3.0L (VIN S) Engine
  3. Lubricate the bearing surfaces of the camshaft bearing caps with engine oil. Install the bearing caps and loosely install the bolts.
  4. Lubricate the bearing surfaces of the camshaft bearing thrust caps with engine oil. Install the bearing thrust caps and loosely install the bolts.
    CAUTION
    The camshaft bearing caps are positional and must be installed in their original locations and orientations or engine damage can occur.
  5. Verify that the camshaft bearing caps are in the correct locations.

    Click image to see an enlarged view
    Fig. Verify the left camshaft bearing caps are in their correct locations-3.0L (VIN S) Engine
  6. Tighten the bolts in the sequence shown.
    NOTE
    Clean and degrease the sealing surfaces with metal surface cleaner.



    Click image to see an enlarged view
    Fig. Left camshaft cap torque sequence-3.0L (VIN S) Engine
  7. Install a new press-in-place gasket and install the camshaft oil seal retainer. Tighten to 89 inch lbs. (10 Nm).
  8. Lubricate the camshaft oil seal with engine oil.
  9. Install the new camshaft oil seal.
  10. Using the tools illustrated positioned over the oil seal, turn to install the seal.
    CAUTION
    The OEM pulley is pressed on 0.18 inch (4.74 mm) past flush of the end of the camshaft. The service pulley gets pressed on flush to the end of the camshaft.



    Click image to see an enlarged view
    Fig. Using the tools illustrated positioned over the oil seal, turn to install the seal-3.0L (VIN S) Engine
  11. Using the tool illustrated, install the water pump drive pulley.

    Click image to see an enlarged view
    Fig. Using the tools illustrated , install the water pump drive pulley-3.0L (VIN S) Engine
  12. Install the water pump belt.
  13. Install the timing drive components.
Right Side
  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove the timing drive components.
    CAUTION
    Record the camshaft bearing cap location. The camshaft bearing caps are positional and must be installed in their original locations and orientations or engine damage can occur.
  3. Loosen the right hand camshaft thrust cap bolts.
  4. Loosen the right hand camshaft cap bolts in sequence to allow the camshafts to rise from the cylinder head and remove the caps.

    Click image to see an enlarged view
    Fig. Right camshaft cap loosening sequence-3.0L (VIN S) Engine
  5. Remove the camshafts.
To install:

NOTE
Be sure the camshaft bearing caps are installed in their original positions.

  1. Lubricate camshafts with engine oil and carefully position the camshafts into the cylinder head.
  2. Align the camshafts as illustrated
    CAUTION
    Do not install the camshaft journal thrust caps until all of the camshaft bearing caps have been installed, or damage to the thrust caps can occur.



    Click image to see an enlarged view
    Fig. Right camshaft alignment-3.0L (VIN S) Engine
  3. Lubricate the bearing surfaces of the camshaft bearing caps with engine oil. Install the bearing caps and loosely install the bolts.
  4. Lubricate the bearing surfaces of the camshaft bearing thrust caps with engine oil. Install the bearing thrust caps and loosely install the bolts.
    CAUTION
    The camshaft bearing caps are positional and must be installed in their original locations and orientations or engine damage can occur.
  5. Verify that the camshaft bearing caps are in the correct locations.
  6. Tighten the right camshaft bolts in the sequence shown to 89 inch lbs. (10 Nm).

    Click image to see an enlarged view
    Fig. Right camshaft cap torque sequence-3.0L (VIN S) Engine
  7. Install the timing drive components
This will help.
Thanks.



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