OIL PUMP INSPECTION

PROCEDURE


  1. INSPECT NO. 1 BRAKE PISTON RETURN SPRING SUB-ASSEMBLY

    A001AZ9E04
    *1 Straightedge

    1. Using a vernier caliper and straightedge, measure the distance between the spring end and the straightedge.

      Standard thickness
      6.52 mm (0.2567 in.)

  2. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY

    A001E0L

    1. Using a caliper gauge, measure the inside diameter of the oil pump body bush.

      Maximum inside diameter
      45.078 mm (1.7747 in.)

      If the inside diameter is greater than the maximum, replace the oil pump body sub-assembly.

  3. INSPECT STATOR SHAFT ASSEMBLY

    A001DIY

    1. Using a caliper gauge, measure the inside diameter of the stator shaft bush.

      Maximum inside diameter
      Front side
      25.925 mm (1.0209 in.)
      Rear side
      35.251 mm (1.3878 in.)

      If the inside diameter is greater than the maximum, replace the stator shaft assembly.

  4. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY

    A001A28

    1. Push the driven gear to one side of the pump body.

    2. Using a feeler gauge, measure the clearance between the driven gear and pump body.

      Standard body clearance
      0.10 to 0.17 mm (0.0039 to 0.0067 in.)

      If the body clearance is not as specified, replace the drive gear, driven gear and pump body.

    3. A001FB8

      Using a feeler gauge, measure the clearance between the driven gear teeth and drive gear teeth.

      Standard tip clearance
      0.07 to 0.15 mm (0.0028 to 0.0059 in.)

      If the tip clearance is not as specified, replace the drive gear, driven gear and pump body.

    4. A001EPW

      Using a steel straightedge and feeler gauge, measure the clearance between both gears and straightedge.

      Standard side clearance
      0.03 to 0.05 mm (0.0012 to 0.002 in.)

      If the side clearance is not as specified, replace the drive gear, driven gear and pump body.

      Tech Tips

      There are 7 different thicknesses for the drive and driven gears.

      Standard drive and driven gears thickness
      Mark Thickness
      0 11.636 to 11.642 mm (0.4581 to 0.4583 in.)
      1 11.643 to 11.649 mm (0.4584 to 0.4586 in.)
      2 11.650 to 11.656 mm (0.4587 to 0.4589 in.)
      3 11.657 to 11.663 mm (0.4589 to 0.4592 in.)
      4 11.664 to 11.670 mm (0.4592 to 0.4594 in.)
      5 11.671 to 11.677 mm (0.4595 to 0.4597 in.)
      6 11.678 to 11.684 mm (0.4598 to 0.4600 in.)

  5. INSPECT OIL PUMP DRIVE GEAR ROTATION

    A001A12

    1. Place the oil pump assembly on the torque converter clutch.

    2. Make sure that the drive gear rotates smoothly.