2005/01/17 New Bearings for the Engine Oil Pump are Available {1304} Caterpillar


New Bearings for the Engine Oil Pump are Available {1304}
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Engine: Commercial
  • 3500 and 3500B Family All
  • New bearings are available for the 4P-5638 Engine Oil Pump Gp. The new bearings for the engine oil pump do not require machining after the bearing is pressed in the pump body or the pump cover.

    The 7W-0060 Sleeve Bearing can be replaced by the 1W-6005 Sleeve Bearing or by the 227-4147 Sleeve Bearing .

    The outside diameter of the 1W-6005 Sleeve Bearing is for a standard bore.

    The outside diameter of the 227-4147 Sleeve Bearing is oversized by 0.254 mm (0.0100 inch).




    Illustration 1g01134843



    Illustration 2g01134847



    Illustration 3g01134858

    (1) Inside diameter of the bearing

    Diameter after assembly ... 31.811 ± 0.013 mm (1.2524 ± 0.0005 inch)
    Maximum roughness average (Ra) ... 0.8 micrometer (32 microinch)

    Note: If the inside diameter of the bearing is not correct, the bearing must be machined or replaced with another bearing.

    (2) The bearings are installed in the cover at the following depth. ... 1.5 ± 0.5 mm (0.06 ± 0.02 inch)

    (3) The bearings are installed in the body at the following depth. ... 1.5 ± 0.5 mm (0.06 ± 0.02 inch)

    (4) The location of each bearing junction is shown. Position the bearing junctions from the centerline through the bearing bores to the following angle. ... 45 ± 15 degrees

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