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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2581 (Engine Mechanical - 6.8L (3V) -- F450 & F550 Super Duty) >> In-Vehicle Repair >> Timing Drive Components >> Removal

Timing Drive Components: Removal

WARNING: This page is about a different car, the 2011 Ford F550 Super Duty and 2011 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the engine front cover. For additional information, refer to ENGINE FRONT COVER  in this service information.
    2. NOTE: Only use hand tools to loosen the sprocket bolt or damage to the camshaft or camshaft sprocket may occur.
    Fig 1: Locating RH Camshaft Sprocket Bolt
    G07480074Courtesy of FORD MOTOR CO.
  2. Loosen and back off the RH camshaft sprocket bolt one full turn.
    3. NOTE: Only use hand tools to loosen the sprocket bolt or damage to the camshaft or camshaft sprocket may occur.
    Fig 2: Locating LH Camshaft Sprocket Bolt
    G07480075Courtesy of FORD MOTOR CO.
  3. Loosen the LH camshaft sprocket bolt.
    4. NOTE: The balance shaft bearing caps must be installed in their original locations or engine damage may occur. Record camshaft bearing cap locations.
    Fig 3: Identifying Balance Shaft Bearing Cap Bolt Loosening/Tightening Sequence
    G07480076Courtesy of FORD MOTOR CO.
  4. Using the sequence shown, remove the 6 bolts, then the 3 balance shaft bearing caps and the balance shaft.
  5. Remove the crankshaft sensor ring from the crankshaft.
    Fig 4: Remove/Install Crankshaft Sensor Ring
    G07480077Courtesy of FORD MOTOR CO.
  6. Position the crankshaft keyway at the 12 o'clock position.
    Fig 5: Identifying Crankshaft Keyway Position
    G07480078Courtesy of FORD MOTOR CO.
    7. NOTE: If the camshaft lobes are not exactly positioned as shown, the crankshaft will require one full additional rotation to 12 o'clock.
    Fig 6: Identifying No. 1 Cylinder Camshaft Exhaust Lobe Is On The Exhaust Stroke
    G07480079Courtesy of FORD MOTOR CO.
  7. The No. 1 cylinder camshaft exhaust lobe must be coming up on the exhaust stroke. Verify by noting the position of the 2 intake camshaft lobes and the exhaust lobe on the No. 1 cylinder.
    8. NOTE: If the components are to be reinstalled, they must be installed in the same positions or engine damage may occur. Mark the components for installation into their original locations.
    Fig 7: Locating Camshaft Roller Followers
    G07480080Courtesy of FORD MOTOR CO.
  8. Remove only the 3 camshaft roller followers shown in the illustration from the RH cylinder head.
    9. NOTE: Do not allow the valve keepers to fall off 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  in this service information.
    NOTE: It may be necessary to push the valve down while compressing the spring.
    Fig 8: Remove/Install Camshaft Roller Followers From RH Cylinder Head Using Valve Spring Compressor
    G07480081Courtesy of FORD MOTOR CO.
  9. Using the Valve Spring Compressor, remove the 3 designated camshaft roller followers in the previous step from the RH cylinder head.
    10. NOTE: If the components are to be reinstalled, they must be installed in the same positions or engine damage may occur. Mark the components for installation into their original locations.
    Fig 9: Remove/Install Camshaft Roller Followers From LH Cylinder Head Using Valve Spring Compressor
    G07480082Courtesy of FORD MOTOR CO.
  10. Remove only the 4 camshaft roller followers shown in the illustration from the LH cylinder head.
    11. NOTE: Do not allow the valve keepers to fall off 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  in this service information.
    NOTE: It may be necessary to push the valve down while compressing the spring.
    Fig 10: Remove/Install Camshaft Roller Follower From LH Cylinder Head Using Valve Spring Compressor
    G07480083Courtesy of FORD MOTOR CO.
  11. Using the Valve Spring Compressor, remove the 4 designated camshaft roller followers in the previous step from the LH cylinder head.
    12. NOTE: The crankshaft cannot be moved past the 6 o'clock position once set or engine damage may occur.
    Fig 11: Identifying Crankshaft Keyway Position
    G07480084Courtesy of FORD MOTOR CO.
  12. Rotate the crankshaft clockwise and position the crankshaft keyway at the 6 o'clock position.
    13. NOTE: If one or both of the tensioner mounting bolts are loosened or removed, the tensioner-sealing bead must be inspected for seal integrity. If cracks, tears, separation from the tensioner body or permanent compression of the seal bead is observed, install a new tensioner or engine damage may occur.
    Fig 12: Locating LH Timing Chain Tensioner Arm And Bolts
    G07480085Courtesy of FORD MOTOR CO.
  13. Remove the 2 bolts, the LH timing chain tensioner and tensioner arm.
    14. NOTE: If one or both of the tensioner mounting bolts are loosened or removed, the tensioner-sealing bead must be inspected for seal integrity. If cracks, tears, separation from the tensioner body or permanent compression of the seal bead is observed, install a new tensioner or engine damage may occur.
    Fig 13: Locating RH Timing Chain Tensioner Arm And Bolts
    G07480086Courtesy of FORD MOTOR CO.
  14. Remove the 2 bolts, the RH timing chain tensioner and tensioner arm.
  15. Remove the LH and RH timing chain and the crankshaft sprockets.
    • Remove the RH timing chain from the camshaft sprocket.
    • Remove the RH timing chain from the crankshaft sprocket.
    • Remove the LH timing chain from the camshaft sprocket.
    • Remove the LH timing chain and the crankshaft sprocket.
    Fig 14: Removing LH/RH Timing Chain
    G07480087Courtesy of FORD MOTOR CO.
  16. Remove the 4 bolts and the timing chain guides.
    • Remove the bolts.
    • Remove the timing chain guides.
    Fig 15: Locating Timing Chain Guides Bolts
    G07480088Courtesy of FORD MOTOR CO.
  17. Remove the bolts and the RH and LH camshaft sprockets.
  18. Remove the balance shaft drive gear from the LH camshaft.
    Fig 16: Locating Balance Shaft Drive Gear Of LH Camshaft
    G07480089Courtesy of FORD MOTOR CO.
    19. NOTE: Remove the front thrust camshaft bearing cap straight upward from the bearing towers, or the bearing cap may be damaged from side loading.
    Fig 17: Locating RH Camshaft Front Bearing Cap Bolts
    G07480090Courtesy of FORD MOTOR CO.
  19. Remove the 2 bolts and the RH camshaft front bearing cap.
    20. NOTE: The camshaft bearing caps must be installed in their original locations. Record camshaft bearing cap locations. Failure to follow these instructions may result in engine damage.
    Fig 18: Removing Sequence Of RH Cylinder Head Camshaft Bearing Caps Bolts
    G07480091Courtesy of FORD MOTOR CO.
  20. Remove the remaining 10 bolts in the sequence shown and remove the RH cylinder head camshaft bearing caps.
  21. Clean and inspect the RH camshaft bearing caps.
    • The camshaft front thrust bearing cap contains an oil metering groove. Make sure the groove is free of foreign material.
    Fig 19: Locating Camshaft Front Thrust Bearing Cap Oil Metering Groove
    G07480092Courtesy of FORD MOTOR CO.
  22. Remove the RH camshaft.
    23. NOTE: Remove the front thrust camshaft bearing cap straight upward from the bearing towers, or the bearing cap may be damaged from side loading.
    Fig 20: Locating LH Camshaft Front Bearing Cap Bolts
    G07480093Courtesy of FORD MOTOR CO.
  23. Remove the 2 bolts and the LH camshaft front bearing cap.
    24. NOTE: The camshaft bearing caps must be installed in their original locations. Record camshaft bearing cap locations. Failure to follow these instructions may result in engine damage.
    Fig 21: Removing Sequence Of LH Cylinder Head Camshaft Bearing Caps Bolts
    G07480094Courtesy of FORD MOTOR CO.
  24. Remove the remaining 10 bolts in the sequence shown and remove the LH cylinder head camshaft bearing caps.
  25. Clean and inspect the LH camshaft bearing caps.
    • The camshaft front thrust bearing cap contains an oil metering groove. Make sure the groove is free of foreign material.
    Fig 22: Locating Camshaft Front Thrust Bearing Cap Oil Metering Groove
    G07480095Courtesy of FORD MOTOR CO.
  26. Remove the LH camshaft.
    27. NOTE: If the components are to be reinstalled, they must be installed in the same positions or engine damage may occur. Mark the components for installation into their original locations.
  27. Remove all of the remaining camshaft roller followers from the cylinder heads.
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