OIL PUMP INSPECTION


  1. INSPECT FRONT OIL PUMP ASSEMBLY


    1. B000L9O

      Turn the front oil pump drive gear with 2 screwdrivers and check that it rotates smoothly.

      Note

      Be careful not to damage the front oil pump oil seal lip.

  2. INSPECT CLEARANCE OF FRONT OIL PUMP AND GEAR BODY SUB-ASSEMBLY


    1. Inspect the body clearance.


      1. B000N33

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

      2. Using a feeler gauge, measure the body clearance.

        Standard Clearance
        0.12 to 0.17 mm (0.00472 to 0.00669 in.)
        Maximum Clearance
        0.17 mm (0.00669 in.)

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

    2. Inspect the side clearance.


      1. B000MYA

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

        Standard Side Clearance
        0.035 to 0.05 mm (0.00138 to 0.00197 in.)
        Maximum Side Clearance
        0.05 mm (0.00197 in.)

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

        Tech Tips

        There are 4 front oil pump drive gears and front oil pump driven gears of different thicknesses.

        Front Oil Pump Drive Gear Thickness
        Part No. Mark

        Thickness

        (mm (in.))
        35321-33160 A 11.554 to 11.56 (0.45488 to 0.45512)
        35321-33170 B 11.561 to 11.567 (0.45516 to 0.45539)
        35321-33180 C 11.568 to 11.574 (0.45543 to 0.45567)
        35321-33190 D 11.575 to 11.581 (0.45571 to 0.45594)
        Front Oil Pump Driven Gear Thickness
        Part No. Mark

        Thickness

        (mm (in.))
        35322-33160 A 11.554 to 11.56 (0.45488 to 0.45512)
        35322-33170 B 11.561 to 11.567 (0.45516 to 0.45539)
        35322-33180 C 11.568 to 11.574 (0.45543 to 0.45567)
        35322-33190 D 11.575 to 11.581 (0.45571 to 0.45594)

  3. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY


    1. B000M0N

      Using a caliper gauge, measure the inside diameter of the front oil pump body bushing.

      Standard Inside Diameter
      43.135 to 43.160 mm (1.69822 to 1.69921 in.)
      Maximum Inside Diameter
      43.160 mm (1.69921 in.)

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

  4. INSPECT STATOR SHAFT ASSEMBLY


    1. B000NLI

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

      Standard Inside Diameter
      22.500 to 22.526 mm (0.88583 to 0.88685 in.)
      Maximum Inside Diameter
      22.526 mm (0.88685 in.)

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