Series 40E

Section 3.2 Lubricating Oil Pump

Section 3.2
Lubricating Oil Pump

Use the following procedure to repair or replace the lubricating oil pump.‪

Section 3.2.1
Removal of Oil Pump

Remove the oil pump as follows:‪

  1. Remove the vibration damper. refer to "1.14.1 Removal of Vibration Damper" .
  2. Remove front oil seal by mounting the front oil seal removal tool, J 39266, into the crankshaft nose and over the oil seal. Turn, forcing the screw to remove the seal.
  3. Remove the oil pump housing as follows:
    1. Loosen and remove the six capscrews (two short capscrews are located at the two and three o'clock positions).
    2. Remove the oil pump housing with O-ring seal from the front cover. Discard the O-ring seal.
    3. Remove the outer rotor. See Figure "Outer Rotor Removal" .
    4. Click to see this graphic in a separate window

      1. Outer Rotor‪

      Figure 1. Outer Rotor Removal

  4. Using a hammer and chisel, remove the Woodruff key from the crankshaft. See Figure "Woodruff Key Removal" .
    Click to see this graphic in a separate window

    1. Woodruff Key‪

    2. Crankshaft‪

    Figure 2. Woodruff Key Removal

  5. Remove the inner rotor and oil slinger from the oil pump drive spline.
  6. Remove the oil pump housing plate. With the plate removed, remove the sealing O-ring from the front cover. Discard the O-ring. See Figure "Oil Pump Housing Plate Removal" .
    Click to see this graphic in a separate window

    1. O-ring‪

    2. Oil Pump Plate‪

    Figure 3. Oil Pump Housing Plate Removal

Section 3.2.1.1
Cleaning of Pump Assembly

Clean the oil pump assembly as follows:‪

  1. Wash all parts thoroughly in an approved solvent.
    caution

    To avoid injury from flying debris when using compressed air, wear adequate eye protection (face shield or safety goggles) and do not exceed 40 psi (276 kPa) air pressure.‪

  2. Dry with filtered compressed air.
Section 3.2.1.2
Inspection and Repair

Inspect and repair the oil pump assembly as follows:‪

  1. Visually inspect rotors, housing and plate for nicks, burrs or scoring.
  2. Replace any damaged components.

    Note: The inner and outer rotors are a matched set and cannot be replaced separately.

  3. Inspect for wear by checking the radial clearance between the outer rotor and the pump housing using a feeler gage. If radial clearance exceeds the specifications, check the housing to rotor clearance. See Figure "Radial Clearance Check" .
    Click to see this graphic in a separate window

    1. Feeler Gage‪

    3. Outer Rotor‪

    2. Oil Pump Housing‪

    Figure 4. Radial Clearance Check

  4. Check housing to rotor clearance as follows:
    1. With the O-ring removed from the oil pump housing, place a straightedge across the housing.
    2. Insert an appropriate feeler gage under the straightedge at the housing and outer rotor.
    3. If not within specifications, check the housing and inner rotor for wear. Replace worn components, as required. See Figure "Inner Rotor Check" .
    4. Click to see this graphic in a separate window

      1. Rotors‪

      3. Straightedge‪

      2. Feeler Gage‪

      4. Oil Pump Housing‪

      Figure 5. Inner Rotor Check

Section 3.2.2
Lubricating Oil Pump Assembly

Follow these steps to assemble the lubricating oil pump.‪

  1. Install a new oil seal into the lubricating oil pump housing as follows.
    1. Apply gasket eliminator #515 to the O.D. of the oil seal.
    2. Slip the oil seal into the installing tool, J 39266.
    3. Press the seal into the oil pump housing so the front of the seal is flush with the front of the oil pump housing. See Figure "Oil Seal Installation" .
    4. Click to see this graphic in a separate window

      1. Oil Seal‪

      3. Press‪

      2. Installation Tool‪

      4. Oil Pump Housing‪

      Figure 6. Oil Seal Installation

  2. Install a new O-ring on the front cover. Then, install the housing plate. See Figure "Housing Plate Installation" .
    Click to see this graphic in a separate window

    1. O-ring‪

    2.Oil Pump Plate‪

    Figure 7. Housing Plate Installation

  3. Install the inner rotor and oil slinger onto the crankshaft gear spline.

    Note: The concave surface of the oil slinger should be facing out.

  4. With the inner rotor installed, tap in the woodruff key with a plastic hammer. See Figure "Woodruff Key Installation" .
    Click to see this graphic in a separate window

    1. Woodruff Key‪

    2. Crankshaft‪

    Figure 8. Woodruff Key Installation

  5. Lubricate the outer rotor with clean engine oil and install the rotor into the oil pump housing. See Figure "Installation of Outer Rotor " .
    Click to see this graphic in a separate window

    1. Mounting Dowels‪

    3. Outer Rotor‪

    2. O-ring Groove‪

    Figure 9. Installation of Outer Rotor

  6. Install a new O-ring into the housing groove and align the housing dowel pins with the mounting locations. Install the oil pump housing to the front cover.
  7. Lubricate the oil seal prior to installation.
  8. Install the six capscrews to secure oil pump housing to the front cover. Two short capscrews are located at the two and three o'clock positions. Torque the capscrews to specifications.
  9. Install the vibration damper. refer to "1.14.2 Installation of Vibration Damper" .


Series 40E Service Manual - 6SE410
Generated on 10-13-2008

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