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3.0L Engine (VIN S)

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CAUTION: DO NOT rotate crankshaft in counterclockwise direction, this may cause engine damage. Crankshaft journals are directional machined. Rotating crankshaft counterclockwise can raise burrs on bearing surfaces, reducing engine life.
NOTE: This procedure applies to all 4 camshafts. Ensure camshaft lobes are 180 degrees away from each shim surface during clearance measurement or adjustment will be incorrect. See Figure .
  1. Disconnect negative battery cable. Remove both valve cover assemblies. See appropriate article in ENGINES. Rotate crankshaft clockwise ONLY to position camshaft lobe away from shim surface. Using feeler gauge, measure and record clearance between camshaft lobe and shim surface. See Figure .
  2. Ensure clearance is within specification. See VALVE CLEARANCE SPECIFICATION (3.0L - VIN S)  table. If clearance is not within specification, go to next step.
    VALVE CLEARANCE SPECIFICATION (3.0L - VIN S) (1)

    Application In. (mm)
    Intake .007-.009 (0.18-0.23)
    Exhaust .013-.015 (0.33-0.38)
    (1) Clearance is checked with engine cold.
  3. Use a permanent type marker to mark position of timing chain in relation to camshaft sprockets to ensure timing remains correct. Mark camshaft cap locations of camshaft that is to be removed. Remove camshaft thrust cap (cap closest to front of camshaft) and rear camshaft cap. DO NOT remove 2 center camshaft caps.
  4. Install Camshaft Lift Tools (303-659 ) finger tight in place of thrust and rear camshaft caps. Install taller of the two Camshaft Lift Tools in place of rear camshaft cap to allow camshaft to be lifted to remove tappet shims. Remove bolts retaining 2 center camshaft caps and remove center caps.
    CAUTION: Use a permanent type marker to note shim locations. DO NOT scratch or use paint to mark shims or incorrect lash adjustments and/or severe engine damage may result.
  5. Use a permanent type marker to mark location of each shim. Using rubber tipped air gun, blow compressed air between shim edge and tappet to remove shim. Measure and record thickness of each shim to correspond with valve location and clearance.
  6. Use the following formula to select proper shim thickness: Required shim thickness = original shim thickness + measured clearance - desired clearance. Select proper shim, and mark for location during installation. Selective shims are available in sizes .083-.117" (2.10-2.96 mm) in increments of .0008" (.020 mm).
  7. Apply a light coat of Super Premium SAE 5W-20 Motor Oil XO-5W20-QSP or equivalent meeting Ford specification WSS-M2C153-H to replacement shim(s) and camshaft lobes and install shim(s). Position center camshaft journal caps and loosely install bolts. Remove camshaft lift tools. Position camshaft journal rear and front thrust caps and loosely install bolts. Tighten bolts 89 INCH lbs. (10 N.m) in sequence. See Fig 1 .
  8. Measure new valve clearances. Rotate crankshaft clockwise and repeat procedure for all valves as necessary. If any clearances are incorrect, repeat step  5 . To complete installation, reverse removal procedure. See 3.0L V6 - VIN S & 1 article in ENGINES.
Fig 1: Identifying Camshaft Torque Sequence (3.0L VIN S)
G00035770Courtesy of FORD MOTOR CO.
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