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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 180 (Engine Mechanical - 5.8L (4V)) >> In-Vehicle Repair >> Valve Seals >> Removal and Installation

Removal and Installation

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: 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. Depending on the valve being serviced, remove the RH or LH valve cover. For additional information, refer to VALVE COVER - RH  or VALVE COVER - LH .
  2. Remove the spark plug. For additional information, refer to ENGINE IGNITION - 5.8L (4V) .
  3. Rotate the crankshaft until the piston for the valve being serviced is at the top of its stroke with both the intake valve and the exhaust valve closed.
  4. NOTE: If the components are to be reinstalled, they must be installed in their original positions. Mark the components for installation into the original location. Failure to follow these instructions may result in engine damage.

    Using the Valve Spring Compressor, compress the valve spring and remove the camshaft roller follower.

    Fig 1: Compressing Valve Spring Using Special Tool
    G06168021Courtesy of FORD MOTOR CO.
  5. Use compressed air in the cylinder to hold the valves in position.
    • Apply a minimum of 965 kPa (140 psi) of compressed air into the cylinder.
      Fig 2: Applying Compressed Air Into Cylinder
      G07988833Courtesy of FORD MOTOR CO.
  6. NOTE: If the components are to be reinstalled, they must be installed in their original positions. Mark the components for installation into their original locations. Failure to follow these instructions may result in engine damage.
    NOTE: If air pressure has forced the piston to the bottom of the cylinder, any loss of air pressure will allow the valve to fall into the cylinder. If air pressure must be removed, support the valve prior to removal.
    NOTE: If a valve drops into the cylinder, remove the cylinder head. For additional information, refer to CYLINDER HEAD .

    Using the Valve Spring Compressor, compress the valve spring and remove the valve spring retainer keys.

    Fig 3: Compressing Valve Spring Using Valve Spring Compressor
    G06394700Courtesy of FORD MOTOR CO.
  7. Remove the valve spring retainer, the valve spring and the valve seal.
    • Discard the valve seal.
  8. Inspect the components. For additional information, refer to ENGINE SYSTEM - GENERAL INFORMATION .
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