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Home >> Ford >> 2003 >> Explorer 4.6 W, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1772 (Engine - 6.8L (3V) -- F250-F550 Super Duty) >> In-Vehicle Servicing >> Timing Drive Components >> Removal

Timing Drive Components: Removal

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. 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 article.
    2. CAUTION: Only use hand tools to loosen the sprocket bolt or damage to the camshaft or camshaft sprocket may occur.
    Fig 1: Identifying Camshaft Sprocket Bolt
    G03920660Courtesy of FORD MOTOR CO.
  2. Loosen and backoff the RH camshaft sprocket bolt one full turn.
    3. CAUTION: Only use hand tools to loosen the sprocket bolt or damage to the camshaft or camshaft sprocket may occur.
    Fig 2: Identifying LH Camshaft Sprocket Bolt
    G03920661Courtesy 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 Bolt Loosening/Tightening Sequence
    G03920712Courtesy of FORD MOTOR CO.
  4. Remove the 6 bolts in the sequence shown, the 3 bearing caps and the balance shaft.
  5. Remove the crankshaft sensor ring from the crankshaft.
    Fig 4: View Of Crankshaft Sensor Ring At Crankshaft
    G04583449Courtesy of FORD MOTOR CO.
  6. Position the crankshaft keyway at the 12 o'clock position.
    Fig 5: Positioning Crankshaft Keyway At 12 O'Clock Position
    G03919943Courtesy 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 Camshaft Lobe Position
    G03919944Courtesy 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. CAUTION: 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: Identifying Camshaft Roller Followers On RH Cylinder Head
    GF0005576Courtesy 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 article.
    NOTE: It may be necessary to push the valve down while compressing the spring.
    Fig 8: Identifying Special Tool For Removing/Installing Camshaft Roller Followers
    G03919946Courtesy of FORD MOTOR CO.
  9. Using the special tool, remove the 3 designated camshaft roller followers in the previous step from the RH cylinder head.
    10. CAUTION: 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: Identifying Camshaft Roller Followers On LH Cylinder Head
    GF0005577Courtesy 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 article.
    NOTE: It may be necessary to push the valve down while compressing the spring.
    Fig 10: Compressing Spring Using Special Tool
    G03919948Courtesy of FORD MOTOR CO.
  11. Using the special tool, remove the 4 designated camshaft roller followers in the previous step from the LH cylinder head.
    12. CAUTION: The crankshaft cannot be moved past the 6 o'clock position once set, or engine damage may occur.
    Fig 11: Crankshaft Positioned With Keyway At 6 O'clock Position
    G03919949Courtesy of FORD MOTOR CO.
  12. Rotate the crankshaft clockwise and position the crankshaft keyway at the 6 o'clock position.
    13. CAUTION: 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: Identifying LH Timing Chain Tensioner & Tensioner Arm
    G03919950Courtesy of FORD MOTOR CO.
  13. Remove the bolts, the LH timing chain tensioner and tensioner arm.
    14. CAUTION: 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: Identifying RH Timing Chain Tensioner And Tensioner Arm Bolts
    GF0005578Courtesy of FORD MOTOR CO.
  14. Remove the 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: View Of Left And Right Timing Chains, Sprockets And Crankshaft Gear
    G03885313Courtesy 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
    G03920972Courtesy 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: Removing Balance Shaft Drive Gear From LH Camshaft
    GF0005579Courtesy of FORD MOTOR CO.
    19. CAUTION: Remove the front thrust camshaft bearing cap straight upward from the bearing towers, or the bearing cap may be damaged from sideloading.
    Fig 17: Identifying RH Camshaft Front Bearing Cap Bolts
    GF0005580Courtesy of FORD MOTOR CO.
  19. Remove the 2 bolts and the RH camshaft front bearing cap.
    20. CAUTION: 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 RH Cylinder Head Camshaft Bearing Caps Bolts In Sequence
    GF0005581Courtesy of FORD MOTOR CO.
  20. Remove the remaining 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: Identifying Camshaft Front Thrust Bearing Cap Oil Metering Groove
    G03919957Courtesy of FORD MOTOR CO.
  22. Remove the RH camshaft.
    23. CAUTION: Remove the front thrust camshaft bearing cap straight upward from the bearing towers, or the bearing cap may be damaged from sideloading.
    Fig 20: Identifying LH Camshaft Front Bearing Cap Bolts
    GF0005580Courtesy of FORD MOTOR CO.
  23. Remove the 2 bolts and the LH camshaft front bearing cap.
    24. CAUTION: 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 LH Cylinder Head Camshaft Bearing Caps Bolts In Sequence
    GF0005582Courtesy of FORD MOTOR CO.
  24. Remove the remaining 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: Identifying Camshaft Front Thrust Bearing Cap Oil Metering Groove
    G03919957Courtesy of FORD MOTOR CO.
  26. Remove the LH camshaft.
    27. CAUTION: 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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