Oil Pump

U151F AUTOMATIC TRANSAXLE: OIL PUMP: INSPECTION

1. INSPECT OIL PUMP ASSEMBLY

(a) Turn the drive gear with 2 screwdrivers and make sure that it rotates smoothly.





NOTICE:
Be careful not to damage the lip of the oil seal.

2. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY

(a) Push the driven gear to one side of the body.





(b) Using a feeler gauge, measure the body clearance between the driven gear and oil pump body.

Standard body clearance:

0.10 to 0.17 mm (0.0039 to 0.0067 in.)

Maximum body clearance:

0.17 mm (0.0067 in.)

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

(c) Using a feeler gauge, measure the tip 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.)

Maximum tip clearance:

0.15 mm (0.0059 in.)

If the tip clearance is greater than the maximum, replace the oil pump body.

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





Standard side clearance:

0.02 to 0.05 mm (0.0008 to 0.0020 in.)

Maximum side clearance:

0.05 mm (0.0020 in.)

Standard drive gear thickness:





Standard driven gear thickness:





3. INSPECT FRONT OIL PUMP AND GEAR BODY SUB-ASSEMBLY

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





Standard inside diameter:

38.113 to 38.138 mm (1.5005 to 1.5015 in.)

Maximum inside diameter:

38.188 mm (1.5035 in.)

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

4. INSPECT STATOR SHAFT ASSEMBLY

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





Standard inside diameter:

21.500 to 21.526 mm (0.8465 to 0.8475 in.)

Maximum inside diameter:

21.57 mm (0.8492 in.)

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