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Timing Drive Components

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SPECIAL TOOL(S)

G07785428
 Tool, Camshaft Holding
303-1248
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.
NOTE: The engine comes equipped with either a roller primary timing chain or an inverted tooth primary timing chain. The roller timing chain engine comes equipped with either a composite RH timing chain guide requiring the timing chain to ride on the outer side of the guide or a stamped steel RH timing chain guide requiring the timing chain to ride on the inner side of the guide. All roller timing chain engine replacement RH timing chain guides will be the stamped steel design.

All engines 

    NOTE: The roller timing chain engine comes equipped with either a composite RH timing chain guide requiring the timing chain to ride on the outer side of the guide or a stamped steel RH timing chain guide requiring the timing chain to ride on the inner side of the guide. All roller timing chain engine replacement RH timing chain guides will be the stamped steel design.
    Fig 1: Locating Bolts And RH Timing Chain Guide
    G07785429Courtesy of FORD MOTOR CO.
  1. Install the RH timing chain guide and bolt(s). Tighten to 10 Nm (89 lb-in).
    1. Roller timing chain stamped steel RH guide.
    2. Roller timing chain composite RH guide.
    3. Inverted tooth timing chain RH guide.
    2. NOTE: It is necessary to tilt the Camshaft Holding Tool toward the rear of the engine to access the rearmost secondary timing chain tensioner bolt.
    Fig 2: Identifying Camshaft Holding Tool And RH Secondary Timing Chain Tensioner And Bolts
    G07785430Courtesy of FORD MOTOR CO.
  2. Install the RH secondary timing chain tensioner and the 2 bolts.
    • Tighten to 10 Nm (89 lb-in).
  3. Assemble the RH Variable Camshaft Timing (VCT) assembly, the RH exhaust camshaft sprocket and the RH secondary timing chain.
    • Align the colored links with the timing marks.
    Fig 3: Aligning Colored Links With Timing Marks
    G07785431Courtesy of FORD MOTOR CO.
  4. Position the RH secondary timing assembly onto the camshafts.
    Fig 4: Positioning RH Secondary Timing Assembly Onto Camshafts
    G07785432Courtesy of FORD MOTOR CO.
  5. Install 2 new bolts and the original washer. Tighten in 4 stages.
    • Stage 1: Tighten to 40 Nm (30 lb-ft).
    • Stage 2: Loosen one full turn.
    • Stage 3: Tighten to 10 Nm (89 lb-in).
    • Stage 4: Tighten 90 degrees.
    Fig 5: Identifying RH VCT Assembly Bolt And RH Exhaust Camshaft Sprocket Bolt
    G07785433Courtesy of FORD MOTOR CO.
  6. Remove the lockpin from the RH secondary timing chain tensioner.
    Fig 6: Locating RH Secondary Timing Chain Tensioner Lockpin
    G07785434Courtesy of FORD MOTOR CO.
    7. NOTE: It is necessary to tilt the Camshaft Holding Tool toward the rear of the engine to access the rearmost secondary timing chain tensioner bolt.
    Fig 7: Locating Bolts And LH Secondary Timing Chain Tensioner
    G07785435Courtesy of FORD MOTOR CO.
  7. Install the LH secondary timing chain tensioner and the 2 bolts.
    • Tighten to 10 Nm (89 lb-in).
  8. Assemble the LH VCT assembly, the LH exhaust camshaft sprocket and the LH secondary timing chain.
    • Align the colored links with the timing marks.
    Fig 8: Aligning Colored Links With Timing Marks
    G07785436Courtesy of FORD MOTOR CO.
  9. Position the LH secondary timing assembly onto the camshafts.
    Fig 9: Positioning LH Secondary Timing Assembly Onto Camshafts
    G07785437Courtesy of FORD MOTOR CO.
  10. Install 2 new bolts and the original washer. Tighten in 4 stages.
    • Stage 1: Tighten to 40 Nm (30 lb-ft).
    • Stage 2: Loosen one full turn.
    • Stage 3: Tighten to 10 Nm (89 lb-in).
    • Stage 4: Tighten 90 degrees.
    Fig 10: Locating LH VCT Assembly Bolt And LH Exhaust Camshaft Sprocket Bolt
    G07785438Courtesy of FORD MOTOR CO.
  11. Remove the lockpin from the LH secondary timing chain tensioner.
    Fig 11: Locating LH Secondary Timing Chain Tensioner Lockpin
    G07785439Courtesy of FORD MOTOR CO.

    Engines equipped with an inverted tooth timing chain 

  12. Install the crankshaft timing chain sprocket.
    Fig 12: Locating Crankshaft Timing Chain Sprocket
    G07785440Courtesy of FORD MOTOR CO.
  13. Install the upper LH primary timing chain guide and the bolt.
    • Tighten to 10 Nm (89 lb-in).
    Fig 13: Locating Bolt And Upper LH Primary Timing Chain Guide
    G07785441Courtesy of FORD MOTOR CO.
    14. NOTE: The crankshaft sprocket timing mark should be between the 2 colored links.
    Fig 14: Aligning Primary Timing Chain Colored Links With Timing Marks On VCT Assemblies And Crankshaft Sprocket
    G07785442Courtesy of FORD MOTOR CO.
  14. Install the primary timing chain with the colored links aligned with the timing marks on the VCT assemblies and the crankshaft sprocket.
  15. Install the lower LH primary timing chain guide and the 2 bolts.
    • Tighten to 10 Nm (89 lb-in).
    Fig 15: Locating Bolts And Lower LH Primary Timing Chain Guide
    G07785443Courtesy of FORD MOTOR CO.
  16. Install the primary timing chain tensioner arm.
    Fig 16: Locating Primary Timing Chain Tensioner Arm
    G07785444Courtesy of FORD MOTOR CO.
  17. Reset the primary timing chain tensioner.
    1. Release the ratchet detent.
    2. Using a soft-jawed vise, compress the ratchet plunger.
    3. Align the hole in the ratchet plunger with the hole in the tensioner housing and install a suitable lockpin.
    Fig 17: Resetting Primary Timing Chain Tensioner
    G07785445Courtesy of FORD MOTOR CO.
    18. NOTE: It may be necessary to rotate the crankshaft slightly to remove slack from the timing chain and install the tensioner.
    Fig 18: Locating Primary Tensioner And Bolts
    G07785446Courtesy of FORD MOTOR CO.
  18. Install the primary tensioner and the 2 bolts.
    • Tighten to 10 Nm (89 lb-in).
    • Remove the lockpin.
  19. As a post-check, verify correct alignment of all timing marks.
    • There are 48 links between the RH intake VCT assembly colored link (1) and the LH intake VCT assembly colored link (2).
    • There are 35 links between the LH intake VCT assembly colored link (2) and the 2 crankshaft sprocket colored links (3).
    Fig 19: Aligning Primary Timing Chain Colored Links With Timing Marks On VCT Assemblies And Crankshaft Sprocket
    G07785447Courtesy of FORD MOTOR CO.

    Engines equipped with a roller timing chain 

  20. Install the crankshaft timing chain sprocket.
    Fig 20: Locating Crankshaft Timing Chain Sprocket
    G07785448Courtesy of FORD MOTOR CO.
  21. Install the upper LH primary timing chain guide and the 2 bolts.
    • Tighten to 10 Nm (89 lb-in).
    Fig 21: Locating Upper LH Primary Timing Chain Guide And Bolts
    G07785449Courtesy of FORD MOTOR CO.
  22. Install the primary timing chain with the colored links aligned with the timing marks on the VCT assemblies and the crankshaft sprocket.
    Fig 22: Aligning Primary Timing Chain Colored Links With Timing Marks On VCT Assemblies And Crankshaft Sprocket
    G07785450Courtesy of FORD MOTOR CO.
  23. Install the lower LH primary timing chain guide and the 2 bolts.
    • Tighten to 10 Nm (89 lb-in).
    Fig 23: Locating Lower LH Primary Timing Chain Guide And Bolts
    G07785451Courtesy of FORD MOTOR CO.
  24. Install the primary timing chain tensioner arm.
    Fig 24: Identifying Primary Timing Chain Tensioner Arm
    G07785452Courtesy of FORD MOTOR CO.
  25. Reset the primary timing chain tensioner.
    • Rotate the lever counterclockwise.
    • Using a soft-jawed vise, compress the plunger.
    • Align the hole in the lever with the hole in the tensioner housing.
    • Install a suitable lockpin.
    Fig 25: Resetting Primary Timing Chain Tensioner
    G07785453Courtesy of FORD MOTOR CO.
    26. NOTE: It may be necessary to rotate the crankshaft slightly to remove slack from the timing chain and install the tensioner.
    Fig 26: Locating Primary Tensioner Bolts And Lockpin
    G07785454Courtesy of FORD MOTOR CO.
  26. Install the primary tensioner and the 2 bolts.
    • Tighten to 10 Nm (89 lb-in).
    • Remove the lockpin.
  27. As a post-check, verify correct alignment of all timing marks.
    • There are 38 links between the RH intake VCT assembly colored link (1) and the LH intake VCT assembly colored link (2).
    • There are 27 links between the LH intake VCT assembly colored link (2) and the crankshaft sprocket colored link (3).
    Fig 27: Aligning Primary Timing Chain Colored Links With Timing Marks On VCT Assemblies And Crankshaft Sprocket
    G07785455Courtesy of FORD MOTOR CO.

    All engines 

  28. Inspect the VCT housing seals for damage and replace as necessary.
    Fig 28: Locating VCT Housing Seals
    G07785456Courtesy of FORD MOTOR CO.
    29. NOTE: RH shown in illustration, LH similar.
    NOTE: During removal, the O-ring seal may remain on the cylinder head. If so, remove the O-ring seal from the cylinder head, inspect the seal (replace as necessary) and install the O-ring seal on the VCT housing.
    Fig 29: Inspecting VCT Housing-To-Cylinder Head O-Ring Seals For Damage
    G07785457Courtesy of FORD MOTOR CO.
  29. Inspect the VCT housing-to-cylinder head O-ring seals for damage and replace as necessary.
    30. NOTE: Make sure the dowels on the Variable Camshaft Timing (VCT) housing are fully engaged in the cylinder-head prior to tightening the bolts. Failure to follow this process will result in severe engine damage.
    Fig 30: Identifying LH VCT Housing Bolts Tightening Sequence
    G07785458Courtesy of FORD MOTOR CO.
  30. Install the LH VCT housing and the 3 bolts.
    • Tighten in the sequence shown in illustration to 10 Nm (89 lb-in).
    31. NOTE: Make sure the dowels on the Variable Camshaft Timing (VCT) housing are fully engaged in the cylinder head prior to tightening the bolts. Failure to follow this process will result in severe engine damage.
    Fig 31: Identifying RH VCT Housing Bolts Tightening Sequence
    G07785459Courtesy of FORD MOTOR CO.
  31. Install the RH VCT housing and the 3 bolts.
    • Tighten in the sequence shown in illustration to 10 Nm (89 lb-in).
  32. Install the engine front cover. For additional information, refer to ENGINE FRONT COVER  in this service information.
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