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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 >> Installation

Timing Drive Components: Installation

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.
NOTE: Timing chain procedures must be followed exactly or damage to valves and pistons will result.
    NOTE: If the components are to be reinstalled, they must be installed into their original locations or engine damage may occur.
    NOTE: Camshaft shown installed to clarify camshaft roller follower position.
    NOTE: Lubricate the camshaft roller followers with clean engine oil prior to installation.
    Fig 1: Locating Camshaft Roller Followers Onto RH Cylinder Head
    G07480096Courtesy of FORD MOTOR CO.
  1. Install only the identified camshaft roller followers onto the RH cylinder head.
  2. NOTE: If the components are to be reinstalled, they must be installed into their original locations or engine damage may occur.
    NOTE: Camshaft shown installed to clarify camshaft roller follower position.
    NOTE: Lubricate the camshaft roller followers prior to installation.
    Fig 2: Locating Camshaft Roller Followers Onto LH Cylinder Head
    G07480097Courtesy of FORD MOTOR CO.
  3. Install only the identified camshaft roller followers onto the LH cylinder head.
  4. Install the LH and RH camshafts.
    • Lubricate the camshaft and camshaft journals with clean engine oil prior to installation.
  5. Install the LH and RH camshaft bearing caps in their original locations.
    • Lubricate the camshaft bearing caps with clean engine oil.
    • Position the front camshaft bearing cap.
    • Position the remaining camshaft bearing caps.
    • Install the 24 bolts loosely.
  6. Tighten the 12 LH camshaft bearing cap bolts in 2 stages:
    • Stage 1: Tighten to 8 Nm (71 lb-in) in the sequence shown.
    • Stage 2: Tighten an additional 45 degrees.
    Fig 3: Identifying LH Camshaft Bearing Cap Bolts Tightening Sequence
    G07480098Courtesy of FORD MOTOR CO.
  7. Tighten the 12 RH camshaft bearing cap bolts in 2 stages:
    • Stage 1: Tighten to 8 Nm (71 lb-in) in the sequence shown.
    • Stage 2: Tighten an additional 45 degrees.
    Fig 4: Identifying Tightening Sequence Of RH Camshaft Bearing Cap Bolts
    G07480099Courtesy of FORD MOTOR CO.
  8. Install the balance shaft drive gear onto the LH camshaft.
  9. Install both camshaft sprockets and camshaft sprocket bolts finger-tight.
  10. NOTE: Timing chain procedures must be followed exactly or damage to valves and pistons will result.
    NOTE: Prior to installation, inspect the tensioner-sealing bead 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 5: Compressing Tensioner Plunger Using Vise
    G07480100Courtesy of FORD MOTOR CO.
  11. Using a vise, compress the tensioner plunger.
  12. Install the Hydraulic Chain Tensioner Retaining Clip on the tensioner to hold the plunger in during installation.
    Fig 6: Installing Hydraulic Chain Tensioner Retaining Clip On Tensioner
    G07480101Courtesy of FORD MOTOR CO.
  13. NOTE: There are 61 links in each timing chain.
    Fig 7: Identifying Timing Chain Links
    G07480102Courtesy of FORD MOTOR CO.
  14. If copper links are not visible, mark 2 links on one end and 1 link on the other end, and use as timing marks.
  15. Install the timing chain guides and the 4 bolts.
    • Tighten to 10 Nm (89 lb-in).
    Fig 8: Locating Timing Chain Guides Bolts
    G07480103Courtesy of FORD MOTOR CO.
  16. Preposition the camshafts in the following sequence.
    1. Rotate the LH camshaft until the timing mark is approximately at 12 o'clock.
    2. Rotate the RH camshaft until the timing mark is approximately at 11 o'clock.
    Fig 9: Locating LH/RH Camshafts Timing Marks
    G07480104Courtesy of FORD MOTOR CO.
  17. NOTE: Rotate the crankshaft counterclockwise only. Do not rotate past the position shown or severe piston and/or valve damage can occur.
    Fig 10: Positioning Crankshaft Using Crankshaft Holding Tool
    G07480105Courtesy of FORD MOTOR CO.
  18. Position the crankshaft with the Crankshaft Holding Tool, then remove the tool.
  19. Install the crankshaft sprocket, making sure the flange faces forward.
    Fig 11: Locating Crankshaft Sprocket Position
    G07480106Courtesy of FORD MOTOR CO.
  20. Install the lower end of the LH timing chain, aligning the timing marks.
    Fig 12: Locating Timing Mark On LH Crankshaft Sprocket
    G07480107Courtesy of FORD MOTOR CO.
  21. NOTE: Be sure the upper half of the timing chain is below the tensioner guide dowel.
    Fig 13: Locating Marks On LH Timing Chain
    G07480108Courtesy of FORD MOTOR CO.
  22. Install the LH timing chain on the camshaft sprocket with the 2 chain (marked) links and the timing marks aligned.
  23. NOTE: The LH timing chain tensioner arm has a bump near the dowel hole for identification.
    Fig 14: Locating LH Timing Chain Tensioner Arm And Bolts
    G07480109Courtesy of FORD MOTOR CO.
  24. Position the LH timing chain tensioner arm on the dowel pin and install the LH timing chain tensioner and the 2 bolts.
    • Tighten to 25 Nm (18 lb-ft).
  25. NOTE: Be sure the chain link and crankshaft sprocket timing marks are aligned.
    NOTE: The lower half of the timing chain must be positioned above the dowel.
    Fig 15: Locating RH (Outer) Timing Chain On Crankshaft Sprocket
    G07480110Courtesy of FORD MOTOR CO.
  26. Install the RH (outer) timing chain on the crankshaft sprocket.
  27. Position the timing chain on the camshaft sprocket. Make sure the 2 copper-colored (marked) links align with the camshaft sprocket timing mark.
    Fig 16: Locating Camshaft Sprocket Timing Mark
    G07480111Courtesy of FORD MOTOR CO.
  28. Position the RH timing chain tensioner arm on the dowel pin and install the RH timing chain tensioner and the 2 bolts.
    • Tighten to 25 Nm (18 lb-ft).
    Fig 17: Locating RH Timing Chain Tensioner Arm With Bolts
    G07480112Courtesy of FORD MOTOR CO.
  29. Remove the Hydraulic Chain Tensioner Retaining Clips from the RH and LH timing chain tensioners.
    Fig 18: Removing Hydraulic Chain Tensioner Retaining Clip From RH/LH Timing Chain Tensioner
    G07480113Courtesy of FORD MOTOR CO.
  30. Check for correct alignment of all timing marks.
    Fig 19: Locating Correct Alignment Of Timing Chain Timing Marks
    G07480114Courtesy of FORD MOTOR CO.
  31. Install the crankshaft sensor ring on the crankshaft.
    Fig 20: Remove/Install Crankshaft Sensor Ring
    G07480115Courtesy of FORD MOTOR CO.
  32. NOTE: Only use hand tools to tighten the camshaft sprocket bolt or damage may occur to the camshaft or camshaft sprocket.
    Fig 21: Locating RH Camshaft Sprocket Bolt
    G07480116Courtesy of FORD MOTOR CO.
  33. Tighten the RH camshaft sprocket bolt in 2 stages:
    • Stage 1: Tighten to 40 Nm (30 lb-ft).
    • Stage 2: Tighten an additional 90 degrees.
  34. NOTE: Only use hand tools to tighten the camshaft sprocket bolt or damage may occur to the camshaft or camshaft sprocket.
    Fig 22: Locating LH Camshaft Sprocket Bolt
    G07480117Courtesy of FORD MOTOR CO.
  35. Tighten the LH camshaft sprocket bolt in 2 stages:
    • Stage 1: Tighten to 40 Nm (30 lb-ft).
    • Stage 2: Tighten an additional 90 degrees.
  36. Rotate the crankshaft clockwise and position the crankshaft keyway at the 6 o'clock position.
    Fig 23: Identifying Crankshaft Keyway Position
    G07480118Courtesy of FORD MOTOR CO.
  37. Remove the 2 bolts and the middle balance shaft bearing support and camshaft bearing cap assembly.
    Fig 24: Locating Middle Balance Shaft Bearing Support And Camshaft Bearing Cap Assembly Bolts
    G07480119Courtesy of FORD MOTOR CO.
  38. NOTE: If the components are to be reinstalled, they must be installed into their original locations or damage to the engine may occur.
    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 25: Installing Roller Follower Using Valve Spring Compressor
    G07480120Courtesy of FORD MOTOR CO.
  39. Using the Valve Spring Compressor, install the roller follower.
    • Lubricate the camshaft roller follower with clean engine oil prior to installation.
  40. Position the camshaft bearing cap and install the bolts in 2 stages:
    • Stage 1: Tighten to 8 Nm (71 lb-in).
    • Stage 2: Tighten an additional 45 degrees.
    Fig 26: Locating Middle Balance Shaft Bearing Support And Camshaft Bearing Cap Assembly Bolts
    G07480121Courtesy of FORD MOTOR CO.
  41. Remove the 2 bolts and the rear balance shaft bearing support and camshaft bearing cap assembly.
    Fig 27: Locating Rear Balance Shaft Bearing Support And Camshaft Bearing Cap Assembly Bolts
    G07480122Courtesy of FORD MOTOR CO.
  42. NOTE: If the components are to be reinstalled, they must be installed into their original locations or damage to the engine may occur.
    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 28: Installing Roller Follower Using Valve Spring Compressor
    G07480123Courtesy of FORD MOTOR CO.
  43. Using the Valve Spring Compressor, install the roller follower.
    • Lubricate the camshaft roller follower with clean engine oil prior to installation.
  44. Position the camshaft bearing cap and install the bolts in 2 stages:
    • Stage 1: Tighten to 8 Nm (71 lb-in).
    • Stage 2: Tighten an additional 45 degrees.
    Fig 29: Locating Rear Balance Shaft Bearing Support And Camshaft Bearing Cap Assembly Bolts
    G07480124Courtesy of FORD MOTOR CO.
  45. NOTE: If the components are to be reinstalled, they must be installed into their original locations or engine damage may occur.
    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 30: Remove/Install Camshaft Roller Follower From LH Cylinder Head Using Valve Spring Compressor
    G07480125Courtesy of FORD MOTOR CO.
  46. Using the Valve Spring Compressor, install all of the remaining camshaft roller followers.
    • Lubricate the camshaft roller followers with clean engine oil prior to installation.
  47. Rotate the crankshaft counterclockwise and position the crankshaft keyway at the 11 o'clock position.
  48. Lubricate the balance shaft journals with clean engine oil.
  49. NOTE: Camshaft sprocket removed from art for clarity.
    Fig 31: Locating Balance Shaft And Camshaft Timing Marks
    G07480126Courtesy of FORD MOTOR CO.
  50. Position the balance shaft on the journals and align the timing mark on the balance shaft with the camshaft timing mark as shown.
  51. NOTE: The balance shaft bearing caps must be installed into their original locations or engine damage may occur.
    Fig 32: Identifying Balance Shaft Bearing Cap Bolt Loosening/Tightening Sequence
    G07480127Courtesy of FORD MOTOR CO.
  52. Position the 3 balance shaft bearing caps and install the 6 bolts and tighten in the sequence shown.
    • Tighten to 10 Nm (89 lb-in).
  53. Install engine front cover. For additional information, refer to ENGINE FRONT COVER  in this service information.