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Home >> Ford >> 2005 >> Freestar SES >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine >> In-Vehicle Repair >> Valve Spring >> Removal and Installation
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Removal and Installation

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 can cause engine failure.
  1. Rotate the crankshaft until the piston is at the top of its stroke with both the intake and exhaust valves closed prior to removing the rocker arm.
  2. Remove the rocker arms. For additional information, refer to ROCKER ARM .
    3. CAUTION: If a valve drops into the cylinder, remove the cylinder head. For additional information, refer to CYLINDER HEAD - LH  or CYLINDER HEAD - RH .
  3. Hold the valve in the cylinder head.
    • Remove the spark plug.
      • To install, tighten to 15 Nm (11 lb-ft).
    • Apply a minimum of 689 kPa (100 psi) of compressed air into the cylinder.
  4. Using the special tool, compress the valve springs.
    Fig 1: Compressing Valve Springs
    G04003979Courtesy of FORD MOTOR CO.
    5. CAUTION: If the components are to be reinstalled, they must be installed in the same position. Mark the components for location.
    Fig 2: Removing Valve Spring Retainer Key And Valve Spring Retainer
    G04003980Courtesy of FORD MOTOR CO.
  5. Remove the following:
    1. valve spring retainer key
    2. valve spring retainer
    3. valve spring
    4. valve stem seal
  6. Inspect the components. For additional information, refer to ENGINE SYSTEM-GENERAL INFORMATION .
    7. CAUTION: Do not release the compressed air from the cylinder until after the valve spring keys are installed.
  7. To install, reverse the removal procedure.
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