00591-39630-81

Frequently Asked Questions

Q: What does the Toyota OEM 00591-39630-81 CR SEAL KIT contain?
A: The 00591-39630-81 is a complete seal kit for Toyota manual pallet jack hydraulic cylinders. It includes rod seals, piston seals, wiper rings, and backup rings manufactured from NBR rubber and engineered polymer materials. All components are precision-sized for Toyota cylinder assemblies.

Q: What hydraulic fluids are compatible with this seal kit?
A: The NBR (nitrile rubber) seals in this kit are compatible with petroleum-based hydraulic fluids and ISO 46 hydraulic oils commonly used in manual pallet jack systems. Do not use this seal kit in systems running biodegradable or synthetic esters without prior verification, as material compatibility may differ.

Q: Which Toyota pallet jack models use the 00591-39630-81 seal kit?
A: This OEM seal kit is designed for Toyota manual pallet jack hydraulic cylinders. Verify your equipment model and serial number against Toyota documentation or contact us to confirm the 00591-39630-81 is the correct replacement for your specific pallet jack.

Q: How often should this seal kit be replaced?
A: Replace this seal kit when you observe hydraulic fluid leakage from the cylinder rod or piston end, sluggish pump operation, or a loss of lifting pressure. Under normal operation, seal kits typically remain serviceable for 2000-5000 operating hours. Heavy use or exposure to contamination may reduce service life.

Q: What is the maximum system pressure rating for this seal kit?
A: The 00591-39630-81 is engineered for manual pallet jack hydraulic systems typically operating at 500-2000 PSI. Operating at higher pressures than the cylinder design specification will void the seal kit warranty and risk seal failure. Verify your system pressure rating in the equipment manual.