00591-31576-81

Frequently Asked Questions

Q: What is the 00591-31576-81 Crown Seal Kit and what does it seal?
A: The 00591-31576-81 is an OEM seal replacement kit for the hydraulic pump crown section on Toyota manual pallet jacks. The crown area contains high-pressure seals that prevent oil leakage from the main pump body.

Q: What is the maximum working pressure for the 00591-31576-81?
A: The 00591-31576-81 is designed for manual pallet jack hydraulic pumps with a maximum working pressure of 3000 PSI. Operating above this pressure rating will cause premature seal failure and system leakage.

Q: When should the crown seals on the 00591-31576-81 be replaced?
A: Replace the crown seals when you observe oil weeping or dripping from the pump crown area, sluggish pump performance, reduced system pressure, or during scheduled maintenance at 2000 to 3000 operating hours.

Q: Is the 00591-31576-81 compatible with standard hydraulic oil?
A: Yes, the 00591-31576-81 is compatible with standard mineral-based hydraulic oils used in Toyota manual pallet jacks. Maintain the correct ISO VG grade and keep the oil clean to extend seal life.

Q: Can the 00591-31576-81 be installed without removing the pump from the jack?
A: Pump crown seal replacement typically requires removing the pump from the frame and disassembling the crown section. This is a specialized rebuild task. If you lack the tools or experience, we recommend having the work performed by a qualified technician.