Pump Assembly

Pump Assembly

















Disassembly

1. Remove the front pump washer.





2. If the O-ring seal was not removed during disassembly, remove and discard the front pump O-ring seal from the pump assembly.





3. Remove and discard the front pump seal rings from the stator support.





4. Index-mark the pump body to the pump plate assembly.

1. Pump body

2. Pump plate assembly

3. Index mark





5. Remove the 11 pump plate assembly-to-pump body bolts.





6. Push down on the loose pump plate assembly-to-pump body bolts to remove the pump body from the pump plate assembly and remove the 11 bolts.





7. Remove the fluid pump gears.





8. Remove and discard the pump body outer seal.





9. Inspect the inner and the outer pump gears for damage.
- Clean all pump components in solvent.

- Dry the parts with compressed air.

- Inspect the pump gears, faces, gear teeth and mating surfaces for damage or scoring.

- Install a new pump as necessary.





10. Inspect the pump body and pump plate thrust surfaces for damage or scoring.

1. Pump body

2. Pump plate assembly

3. Pump gear thrust surfaces





11. Inspect the torque converter hub bearing for damage or scoring. Make sure that the bearing rotates smoothly.





Assembly

1. NOTE: Prior to installation, lightly lubricate the pump gears with clean automatic transmission fluid.

Install the pump gears with the dot facing the pump plate assembly.





2. Install a new pump body outer seal.





3. Align the marks made during disassembly to correctly assemble the pump. Press the pump body into the pump plate assembly. Visually inspect the pump body-to-pump plate assembly bolt holes to be sure that the pump body and pump plate are correctly aligned.

1. Pump body

2. Pump plate assembly

3. Pump gear thrust surfaces





4. Install the pump plate assembly-to-front pump body bolts.
- Tighten to 15 Nm (133 lb-in).





5. NOTICE: Make sure that the seal ends of each seal ring are hooked together or fluid leakage can occur.

Install the 2 front pump seal rings onto the stator support. Make sure the seals are fully seated in the stator support seal grooves and the seal ends are oriented 180 degrees apart.





6. Install the pump outer diameter front pump O-ring seal.





7. Install a new front pump seal on the Fluid Pump Seal Installer 307-556.





8. Using the Fluid Pump Seal Installer 307-556, install the front pump seal.





9. NOTE: Lightly lubricate the thrust washer with petroleum jelly to hold it in place during assembly.

Install the pump thrust washer.