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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Engine Mechanical - 6.8L) >> In-Vehicle Repair >> Camshaft - LH >> Removal

Camshaft - LH: Removal

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty and 2013 Ford F-450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The camshaft procedure must be followed exactly or damage to the valves and pistons will result.
  1. Position the crankshaft damper spoke at the 12 o'clock position and the timing mark indentation at the 1 o'clock position.
    Fig 1: Locating Timing Mark Indentation
    G06126293Courtesy of FORD MOTOR CO.
  2. Remove the LH valve cover. For additional information, refer to VALVE COVER - LH .
  3. NOTE: The balance shaft bearing caps must be installed in their original locations or engine damage may occur. Record camshaft bearing cap locations.

    Using the sequence shown in the illustration, remove the 6 bolts, then the 3 balance shaft bearing caps and the balance shaft.

    Fig 2: Identifying Balance Shaft Bearing Cap Bolts Removal Sequence
    G06773319Courtesy of FORD MOTOR CO.
  4. NOTE: Only use hand tools to loosen the sprocket bolt or damage to the camshaft or camshaft sprocket may occur.

    Loosen and back off the LH camshaft sprocket bolt one full turn.

    Fig 3: Locating LH Camshaft Sprocket Bolt
    G06773318Courtesy of FORD MOTOR CO.
  5. NOTE: If servicing both camshafts, do not rotate the crankshaft or engine damage may occur. Camshaft position has been established in Step  8.
    NOTE: If the camshaft lobes are not exactly positioned as shown in the illustration, the crankshaft keyway will require one full additional rotation to 12 o'clock. Do not rotate the crankshaft if servicing both camshafts.

    The No. 6 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. 6 cylinder.

    Fig 4: Identifying Camshaft Lobes Position
    G06773403Courtesy of FORD MOTOR CO.
  6. Remove only the 4 camshaft roller followers shown in the illustration.
    Fig 5: Locating Camshaft Roller Followers
    G06773325Courtesy of FORD MOTOR CO.
  7. NOTE: The camshaft roller followers must be installed in their original locations or engine damage may occur. Record camshaft roller follower locations.
    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 .
    NOTE: It may be necessary to push the valve down while compressing the spring.

    Using the Valve Spring Compressor, remove only the 4 camshaft roller followers designated in the previous step.

    Fig 6: Identifying Valve Spring Compressor
    G06126256Courtesy of FORD MOTOR CO.
  8. NOTE: The crankshaft cannot be moved past the 6 o'clock position once set. Failure to follow this instruction may result in engine damage.

    Rotate the crankshaft clockwise, as viewed from the front, positioning the crankshaft damper spoke at the 6 o'clock position and the timing mark indentation at the 7 o'clock position.

    Fig 7: Positioning Crankshaft Damper Spoke At 6 O'Clock Position And Timing Mark Indentation At 7 O'Clock Position
    G06126299Courtesy of FORD MOTOR CO.
  9. NOTE: Engine is not freewheeling. Camshaft procedure must be followed exactly or damage to valves and pistons will result.
    NOTE: The Timing Chain Locking Tool must be installed square to the timing chain and the engine block or engine damage may occur.
    NOTE: Front cover removed for clarity.

    Install the Timing Chain Locking Tool in the LH timing chain as shown in the illustration.

    Fig 8: Identifying Timing Chain Locking Tool
    G06773407Courtesy of FORD MOTOR CO.
  10. NOTE: Do not remove the Timing Chain Locking Tool at any time during assembly. If the Timing Chain Locking Tool is removed or out of placement, the engine front cover must be removed and the engine must be retimed. For additional information, refer to TIMING DRIVE COMPONENTS .
    NOTE: The timing chain must be installed in its original position onto the camshaft sprocket using the scribed marks, or damage to valves and pistons will result.

    Scribe a location mark on the timing chain and the camshaft sprocket assembly.

    Fig 9: Locating Scribed Mark On Timing Chain And Camshaft Sprocket Assembly
    G06773383Courtesy of FORD MOTOR CO.
  11. NOTE: Remove the front thrust camshaft bearing cap straight upward from the bearing towers, or the bearing cap may be damaged from side loading.

    Remove the 2 bolts and the camshaft front bearing cap.

    Fig 10: Locating Camshaft Front Bearing Cap Mounting Bolts
    G06773336Courtesy of FORD MOTOR CO.
  12. 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.

    Remove the remaining 10 bolts in the sequence shown in the illustration and remove the camshaft bearing caps.

    Fig 11: Identifying LH Cylinder Head Camshaft Bearing Caps Mounting Bolts Removal Sequence
    G06773337Courtesy of FORD MOTOR CO.
  13. 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 12: Locating Oil Metering Groove On Camshaft Front Thrust Bearing Cap
      G06126266Courtesy of FORD MOTOR CO.
  14. NOTE: Only use hand tools to remove the camshaft sprocket bolt or damage may occur to the camshaft or camshaft sprocket.
    NOTE: Do not remove the Timing Chain Locking Tool at any time during assembly. If the Timing Chain Locking Tool is removed or out of placement, the engine front cover must be removed and the engine must be retimed. For additional information, refer to TIMING DRIVE COMPONENTS .

    Remove the bolt and withdraw the camshaft from the sprocket assembly leaving the sprocket assembly and timing chain in place.

    • Discard the bolt and washer.
      Fig 13: Locating LH Camshaft Sprocket Bolt
      G06773318Courtesy of FORD MOTOR CO.