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Home >> Ford >> 2003 >> Mustang Base, 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1635 (Engine - 6.0L Diesel -- F250-F550 Super Duty 6.0L (99P F450/550)) >> In-Vehicle Servicing >> Rocker Arm >> Removal

Rocker Arm: 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 valve cover(s) for the cylinders being serviced. For additional information, refer to Valve Cover - RH  and Valve Cover - LH  (if servicing a rocker arm on the left side).
    2. Fig 1: Dowel Hole In Vibration Damper
    GF0005730Courtesy of FORD MOTOR CO.
  2. Locate the dowel hole in the vibration damper.
    • The hole is located between 2 of the 4 bolts that attach the damper to the front of the crankshaft.
    3. Fig 2: Dowel Hole At 12 O'clock Position
    GF0005731Courtesy of FORD MOTOR CO.
    NOTE: For vehicles with a single generator, use a long arm box wrench to rotate the engine. Use an inspection mirror to verify that the dowel hole is in the 12 o'clock position.
  3. Rotate the crankshaft until the dowel hole is at the 12 o'clock position.
    • The No. 1 piston should be on the compression stroke. Wiggle the rocker on the No. 1 cylinder to verify both intake and exhaust rocker arms are able to move freely. If the intake and exhaust rocker arms do not move freely, rotate the crankshaft one complete revolution. You are now positioned to service the rocker arms for cylinders 1, 2, 7 and 8.
    4. NOTE: If servicing all rocker arms, or any of the rocker arms for cylinders 1, 2, 7 and 8, the remainder of this procedure must be performed before rotating the crankshaft to prepare the engine to service cylinders 3, 4, 5 and 6.
  4. If required, skip step 5 and complete the rest of this procedure, for rocker arms on cylinders 1, 2, 7 and 8.
    5. NOTE: All service for cylinders 1, 2, 7 and 8 must be completed before rotating the crankshaft to prepare the engine to service cylinders 3, 4, 5 and 6.
  5. If you are not servicing cylinders 1, 2, 7 and 8 or if service to those cylinders has been completed, rotate the crankshaft one complete revolution to service the rocker arms for cylinders 3, 4, 5 and 6.
    • Complete the rest of this procedure for rocker arms on cylinders 3, 4, 5 and 6.
  6. Remove the fuel injectors for the cylinders that are being serviced. For additional information, refer to FUEL CHARGING AND CONTROLS - 6.0L DIESEL article.
    7. Fig 3: Injector Hold-Down Clamp Into Special Tool Base
    GF0005732Courtesy of FORD MOTOR CO.
    NOTE: Make sure the notch in the base is aligned in the hold down clamp.
  7. Insert the injector hold down clamp into the special tool base.
    8. Fig 4: Installing Assembly In Between The Bridges
    GF0005733Courtesy of FORD MOTOR CO.
    CAUTION: While centering the base between the 2 bridges, snug the hold down bolt only. Do not tighten it or engine damage can occur.
  8. Install the assembly in between the bridges as if you are installing an injector.
    9. Fig 5: Installing Rubber Hose In The Oil Drain Holes
    GF0005734Courtesy of FORD MOTOR CO.
    NOTE: Use a piece of 457.2 mm (18 in) x 6.35 mm (0.25 in) vacuum hose to block the oil drain holes.
    NOTE: Apply clean engine oil to the hose to aid in installing.
  9. Install the rubber hose in the oil drain holes for the cylinder on which the rocker arms are being serviced.
    • Verify that the oil drain holes are blocked.
    10. Fig 6: Compressing Valve Spring
    GF0005735Courtesy of FORD MOTOR CO.
    CAUTION: Only use hand tools to compress the valve springs. Do not use power tools or engine damage can occur.
    NOTE: If the rocker arm is severely worn, insert a small pry bar between the exhaust rocker arm and bridge to gain clearance by compressing the valves slightly.
  10. Install the special tool plate on top of the bridges with the small point of the plate in between the exhaust rocker and bridge. Install the special tool bolt and compress the valve springs until the plate contacts the top of the tool base.
    11. Fig 7: Locating Rocker Arm Retaining Clip
    G03887385Courtesy of FORD MOTOR CO.
    NOTE: When removing the rocker arm, be careful not to drop the ball from the fulcrum plate or rocker arm socket.
  11. Disengage the rocker arm from the push rod. Then rotate the rocker arm out while compressing down on the rocker arm retaining clip.
    • Remove and discard the rocker arm retaining clip.
    • Repeat the step for the other rocker arm.
    12. Fig 8: Push Rod (With Specifications)
    GF0005736Courtesy of FORD MOTOR CO.
    CAUTION: To prevent engine damage, keep the push rods in the order in which they were removed. Install the push rods back in their original positions.
  12. Remove the push rod.
    • Inspect each push rod for wear and deposits which may restrict the flow of oil into the rocker arm assembly, replace as necessary.
    • Check the push rod for flatness by rolling them on a flat surface if not within specification, replace as necessary.
    13. Fig 9: Special Tool & Bolt
    GF0005737Courtesy of FORD MOTOR CO.
  13. With the rocker arms removed, remove the special tool bolt and the special tool plate to gain access to the valve bridges.
    14. Fig 10: Identifying Valve Bridges
    G03887388Courtesy of FORD MOTOR CO.
  14. Remove and discard the valve bridges.
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