Oil Pump

U250E 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.





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

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

(d) 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 (0.00276 to 0.00591 in.)

Maximum tip clearance:

0.15 mm (0.00591 in.)

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

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





Standard side clearance:

0.02 to 0.05 mm (0.000784 to 0.00197 in.)

Maximum side clearance:

0.05 mm (0.00197 in.)

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









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

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





Standard inside diameter:

38.113 to 38.138 mm (1.50051 to 1.50149 in.)

Maximum inside diameter:

38.188 mm (1.50346 in.)

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

4. INSPECT STATOR SHAFT ASSEMBLY

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





Standard inside diameter:

21.500 to 21.526 mm (0.84646 to 0.84748 in.)

Maximum inside diameter:

21.57 mm (0.8492 in.)

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