Oil Pump Inspection

OIL PUMP INSPECTION





1. Using a dial gauge, measure the inner diameter of the pump housing component bushings.

Pump housing bushing inner diameter:
38.113-38.138 mm (1.50051-1.50150 in)

Caution:
^ Measure at different places and take an average. If it exceeds the specification, replace the pump housing component with a new one.
^ When the pump housing component is replaced, inspect the contact surface opposed to the torque converter.
^ If the surface of it is scratched or has changed color, replace the torque converter with a new one.





2. Using a dial gauge, measure the inner diameter of the oil pump shaft bushings.

Oil pump shaft bushing inner diameter:
21.501-21.527 mm (0.846496-0.847520 in)

Caution:
^ Measure at different places and take an average. If it exceeds the specification, replace the oil pump shaft with a new one.
^ When the oil pump shaft is replaced, inspect the contact surface opposed to the input shaft.
^ If the surface of it is scratched or has changed color, replace the input shaft with a new one.





3. Press the gear oil pump towards the outer side of one side of the pump housing. Measure the clearance using a feeler gauge.

Oil pump gear outer standard clearance:
0.10-0.17 mm (0.004-0.006 in)

Caution: If it exceeds the specification, replace the pump housing with a new one.





4. Measure the clearance between the inner and outer oil pump gears using a feeler gauge.

Oil pump gear inner standard clearance:
0.07-0.15 mm (0.0028-0.0059 in)

Caution: If it exceeds the specification, replace the pump housing with a new one.





5. Measure the side clearance of both gears using a steel straight edge and feeler gauge.

Oil pump gear side standard clearance:
0.02-0.04 mm (0.0008-0.0015 in)

Oil pump gear size (mm (in))





Caution: If the measurement exceeds the maximum specification, replace the inner oil pump gear and outer oil pump gear with a new one so that the side clearance is within the maximum specification. If the side clearance still exceeds the maximum specification, replace the oil pump with a new one.