Oil Pump

A760E AUTOMATIC TRANSMISSION / TRANSAXLE: OIL PUMP: INSPECTION

1. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY

(a) Using a dial indicator, measure the inside diameter of the oil pump body bushing.





Maximum inside diameter:

38.138 mm (1.50 in.)

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

2. INSPECT STATOR SHAFT ASSEMBLY

(a) Using a dial indicator, measure the inside diameter of the stator shaft bushing.





Maximum inside diameter:

Front side
21.527 mm (0.848 in.)

Rear side
32.03 mm (1.26 in.)

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

3. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY

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





(b) Using a feeler gauge, measure the clearance.

Standard body clearance:

0.10 to 0.17 mm (0.00394 to 0.00669 in.)

If the body clearance is greater than the standard clearance, check the drive gear, driven gear and pump body.

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





Standard tip clearance:

0.070 to 0.150 mm (0.00276 to 0.00591 in.)

If the tip clearance is greater than the standard clearance, check the drive gear, driven gear and pump body.

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





Standard side clearance:

0.03 to 0.05 mm (0.00118 to 0.00197 in.)

If the side clearance is greater than the standard thickness, check the drive gear, driven gear and pump body.

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

Drive and Driven Gears Thickness:





4. INSPECT OIL PUMP DRIVE GEAR ROTATION

(a) Make sure that the drive gear rotates smoothly.





(b) Remove the oil pump body sub-assembly from the torque converter.