00591-31559-81

Frequently Asked Questions

Q: What is the pressure rating and hardness specification for the 00591-31559-81 SUPER SEAL KIT?
A: The 00591-31559-81 is rated for 3000 PSI system hydraulic pressure. Polyurethane elements are Shore A 90 ±2, and nitrile rubber elements are Shore A 70 ±3, providing a balanced hardness profile for piston and wiper seal applications.

Q: What pump components does the 00591-31559-81 seal?
A: The SUPER SEAL KIT is engineered for Toyota manual pallet jack pump units. It includes piston seals and wiper seals to maintain pump integrity and prevent internal leakage at full system pressure.

Q: Which hydraulic oils are compatible with the 00591-31559-81?
A: This kit is compatible with ISO VG 32 and VG 46 hydraulic oils, which are standard grades for manual pallet jack systems. Verify your equipment manual for the correct viscosity grade before filling.

Q: When should the 00591-31559-81 seals be replaced?
A: Replace pump seals when you observe reduced pump output, audible grinding or squealing during operation, visible external leakage around the pump housing, or after 2500 to 3500 hours of use depending on load cycles and environmental exposure.

Q: Can the 00591-31559-81 be used in other equipment besides Toyota manual jacks?
A: The 00591-31559-81 is designed specifically for Toyota manual pallet jack pump units. While other brands like Crown or Raymond may use similar pump designs, do not assume cross-compatibility without verifying bore dimensions and seal cavity specifications.