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Home >> Mercedes Benz >> 2025 >> eSprinter Base, _NA_ >> Repair and Diagnosis >> External Pages >> Different car >> Section 2100 (Engine - 5.4L (3V) -- F-250 & F350 Super Duty) >> In-Vehicle Servicing >> Valve Seals >> Removal

Valve Seals: Removal

WARNING: This page is about a different car, the 2008 Ford Pickup and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

RH cylinder head valve seals 

  1. Remove the RH valve cover. For additional information, refer to Valve Cover - RH .

    2. LH cylinder head valve seals 

  2. Depending on the valve being serviced, remove the LH or RH valve cover. For additional information, refer to Valve Cover - LH  or Valve Cover - RH .

    3. All valve seals 

  3. Remove the spark plug for the cylinder being serviced. For additional information, refer to ENGINE IGNITION - 5.4L AND 6.8L (3V) article.
  4. Rotate the crankshaft until the piston for the valve being serviced is at the top of its stroke with the intake valve and the exhaust valves closed.
    5. CAUTION: If the components are to be reinstalled, they must be installed in the same positions. Mark the components for installation into their original locations. Failure to follow these instructions may result in engine damage.
    NOTE: Do not allow the valve keepers to fall off of the valve or the valve may drop into the cylinder. If a valve drops into the cylinder, the cylinder head must be removed. For additional information, refer to Cylinder Head .
    NOTE: It may be necessary to push the valve down while compressing the spring.
  5. Using the special tool, compress the valve spring and remove the camshaft roller follower.
    6. Fig 1: Identifying Special Tool (303-1039) For Removing/Installing Camshaft Roller Followers
    G03919946Courtesy of FORD MOTOR CO.
  6. Use compressed air in the cylinder being serviced to hold the valves in position.
    • Apply a minimum of 965 kPa (140 psi) of compressed air into the cylinder.
    7. CAUTION: If the components are to be reinstalled, they must be installed in the same 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. If a valve drops into the cylinder, remove the cylinder head. For additional information, refer to Cylinder Head .
  7. Using the special tool, compress the valve spring and remove the valve spring retainer keys.
    8. Fig 2: Compressing Valve Spring With Special Tool (303-1039)
    G03920063Courtesy of FORD MOTOR CO.
  8. Remove the valve spring retainer, the valve spring and the valve seal.
    • Discard the valve seal.
  9. Inspect the components. For additional information, refer to ENGINE SYSTEM - GENERAL INFORMATION article.
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