25. Fluid Pump Disassemble

Fluid Pump Disassemble
^ Tools Required
- J 45000 Seal Remover





Notice: Do not position the pump assembly on the inlet face. Damage to the inlet face may cause the pump assembly to become inoperative.

Notice: Do not remove the pressure relief valve assembly from the pump assembly. The threads of the valve are coated with a locking sealant. Reinstalling a valve that has been removed may cause the valve to leak or become loose.

1. Position the pump assembly on an arbor press so that the pump drive shaft end is face-down and the pump assembly is resting on its outer diameter rim face.
2. Center the arbor press over the pump end cover.
3. Using the arbor press, apply a light load to the pump end cover in order to relieve the load on the end cover retaining ring.
4. Using a small punch, push the end cover retaining ring inward through the access hole on the pump housing.
5. While the retaining ring is held in, use a small screwdriver to remove the retaining ring from the pump assembly.
6. Remove the punch and release the arbor press load from the pump end cover.





7. Using both hands, grasp the pump assembly and lightly tap the shaft end on a wooden block until the pump end cover comes out of the pump housing.





8. Remove the pump end cover, pressure plate and pressure plate spring as a unit from the pump housing.





9. Using a small screwdriver, remove the pressure plate and spring from the pump end cover.
10. Remove the O-ring seal from the pump end cover. Discard the O-ring seal.





11. Remove the drive shaft, cam ring, thrust plate, and rotor as a unit from the pump housing.





12. Remove the cam ring from the rotor.





Notice: Do not reuse the drive shaft retaining ring after removing it. Reusing the retaining ring may damage the fluid pump.

13. Remove the drive shaft retaining ring. Discard the retaining ring.
14. Remove the rotor and thrust plate from the drive shaft,





15. Remove the 2 cam ring dowel pins from the pump housing.





16. Remove the inner O-ring seal from the pump housing. Discard the O-ring seal.





Notice: Use care when removing the seal in order to prevent damage to the pump housing.

17. Using the J 45000, remove the pump drive shaft seal from the pump housing. Discard the seal.





18. Remove the outer O-ring seal and the outer white square-cut seal from the pump housing. Discard the seals.