Product Description
Oil seal
Frequently Asked Questions
Q: What is the purpose of SKU 973429 oil seal in electric lift trucks?
A: This oil seal is a dynamic or static seal that prevents hydraulic fluid leakage from rotating shafts or stationary connections in the hydraulic system. It maintains pressure in cylinders, motors, and pump assemblies by blocking fluid escape while allowing controlled shaft movement.
Q: Which electric lift truck models and OEM brands use the 973429 seal?
A: This oil seal is compatible with electric lift trucks from Crown, Toyota, Raymond, Hyster, and similar OEM manufacturers. Confirm the shaft diameter, seal bore, and seal type in your hydraulic schematic before ordering, as seal dimensions are critical for proper sealing.
Q: What are the warning signs of a failing oil seal?
A: Visible hydraulic fluid leaking from the cylinder rod end, seal area, or pump body, sluggish lift or lower response, loss of pressure in one circuit, or discolored or burnt-smelling oil around the seal indicate failure. Replace immediately to prevent system damage and loss of control.
Q: How often does this oil seal need replacement?
A: Under normal operating conditions, an oil seal lasts 4 to 6 years. Seals exposed to extreme temperatures, contaminated hydraulic fluid, or excessive pressure cycling fail faster. Monitor for leaks during regular maintenance and replace at first sign of fluid loss.
Q: What are the shaft diameter and seal bore specifications for the 973429?
A: Verify the shaft diameter, bore diameter, and seal width from your cylinder or pump component drawing. Incorrect seal size will not seat properly and will leak immediately under pressure. Always confirm dimensions match your equipment specifications before ordering.