OIL PUMP INSPECTION

PROCEDURE


  1. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY

    A01WV7J

    1. Using a dial indicator, measure the inside diameter of the front oil pump body sub-assembly bush.

      Standard inside diameter
      45.064 to 45.078 mm (1.7742 to 1.7747 in.)

      • If the inside diameter is more than the standard, replace the front oil pump body sub-assembly.

  2. INSPECT STATOR SHAFT ASSEMBLY

    A01WVS9

    1. Using a dial indicator, measure the inside diameter of the stator shaft assembly bush.

      Standard inside diameter
      25.900 to 25.921 mm (1.0197 to 1.0205 in.)

      • If the inside diameter is more than the standard, replace the stator shaft assembly.

  3. INSPECT OIL PUMP ASSEMBLY CLEARANCE


    1. A01WWJU

      Push the driven gear to one side of the front oil pump body sub-assembly.

    2. Using a feeler gauge, measure the front oil pump body sub-assembly clearance.

      Standard body clearance
      0.10 to 0.17 mm (0.00394 to 0.00669 in.)
      Maximum body clearance
      0.17 mm (0.00669 in.)

      • If the body clearance is more than the maximum, replace the drive gear, driven gear or front oil pump body sub-assembly.

    3. A01WT9M

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

      Standard tip clearance
      0.070 to 0.150 mm (0.00276 to 0.00590 in.)
      Maximum tip clearance
      0.150 mm (0.00590 in.)

      • If the tip clearance is more than the maximum, replace the drive gear, driven gear or front oil pump body sub-assembly.

    4. A01WRWT

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

      Standard side clearance
      0.03 to 0.05 mm (0.00119 to 0.00196 in.)
      Maximum side clearance
      0.05 mm (0.00196 in.)

      If the side clearance of both gears is more than the maximum, replace the drive gear, driven gear or front oil pump body sub-assembly.

      Tech Tips

      There are 7 different thicknesses for the front oil pump drive gear and front oil pump driven gear.

      Standard Front Oil Pump Drive Gear and Front Oil Pump Driven Gear 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 0.4588 in.)
      3 11.657 to 11.663 mm (0.4590 to 0.4591 in.)
      4 11.664 to 11.670 mm (0.4593 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 0.4599 in.)

  4. INSPECT FRONT OIL PUMP DRIVE GEAR ROTATION


    1. A01WRZS

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

    2. Check that the front oil pump drive gear rotates smoothly.

    3. Remove the oil pump assembly from the torque converter clutch assembly.