Oil Pump

U140F AUTOMATIC TRANSMISSION / 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 oil seal lip.

2. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY

(a) Push the driven gear to one side of the body. Using a feeler gauge, measure the clearance.





Standard body clearance:

0.10 to 0.17 mm (0.00393 to 0.00669 in.)

Maximum body clearance:

0.17 mm (0.00669 in.)

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

(b) Measure the tip clearance between the driven gear teeth and drive gear teeth.





Standard tip clearance:

0.07 to 0.15 mm (0.00275 to 0.00590 in.)

Maximum tip clearance:

0.15 mm (0.00590 in.)

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

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





Standard side clearance:

0.02 to 0.05 mm (0.000787 to 0.00196 in.)

Maximum side clearance:

0.05 mm (0.00196 in.)

If the side clearance is greater than the maximum, replace the drive gear, driven gear or pump body.

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 bush.





Standard inside diameter:

38.12 to 38.13 mm (1.500 to 1.501 in.)

Maximum inside diameter:

38.18 mm (1.503 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 bush.

Standard inside diameter:

21.50 to 21.52 mm (0.846 to 0.847 in.)

Maximum inside diameter:

21.57 mm (0.849 in.)

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