58. Transmission Fluid Pump Cleaning and Inspection

Transmission Fluid Pump Cleaning and Inspection




1. Turn the drive gear with 2 screwdrivers and make sure it rotates smoothly.




2. Push the driven gear (2) to one side of the body.
3. Using a feeler gauge, measure the clearance.

* Standard body clearance - 0.10-0.17 mm (0.0039-0.0067 in)
* Side clearance - 0.02-0.05 mm (0.001-0.002 in)
* Maximum body clearance - 0.17 mm (0.0067 in)

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




5. Using a feeler gauge, measure the tip clearance between the driven gear teeth and drive gear teeth.

* Standard tip clearance - 0.07-0.15 mm (0.0028-0.0059 in)
* Maximum tip clearance - 0.15 mm (0.0059 in)

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




7. Using a straightedge and feeler gauge, measure the side clearance of both gears.

* Standard side clearance - 0.02-0.05 mm (0.0008-0.0020 in)
* Maximum side clearance - 0.05 mm (0.0020 in)

8. Refer to Transmission General Specifications (Transmission General Specifications) for drive gear thickness.




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

* Standard inside diameter - 38.113-38.138 mm (1.5005-1.5014 in)
* Maximum inside diameter - 38.188 mm (1.5034 in)

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




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

* Standard inside diameter - 21.500-21.526 mm (0.8464-0.8474 in)
* Maximum inside diameter - 21.57 mm (0.8492 in)

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