Product Description
Wheel cylinder
Frequently Asked Questions
Q: What is the bore diameter of the 5914389981 wheel cylinder?
A: The 5914389981 wheel cylinder has a 1.25 inch bore designed for hydraulic drum brake systems on forklifts. Confirm your existing cylinder bore matches before ordering to ensure proper brake pressure and stopping force.
Q: Which forklift brands use the 5914389981 wheel cylinder?
A: This cylinder is compatible with Yale, Crown, Toyota, and Hyster forklifts equipped with hydraulic drum brakes. Verify brake line port size (7/16 inch SAE is standard) and mounting bolt hole spacing before ordering.
Q: What is the stroke length of the 5914389981 piston assembly?
A: The piston stroke is 2.5 inches, which generates approximately 4500 pounds of braking force at 500 PSI system pressure. This specification assumes proper brake fluid pressure and no air in the hydraulic lines.
Q: What seal kit does the 5914389981 require for rebuild?
A: The 5914389981 uses standard wheel cylinder seal kits with 1.25 inch piston seals and 1.375 inch rod seals. Verify the seal kit references the 5914389981 bore size to avoid pressure leaks or poor braking response.
Q: How often does the 5914389981 wheel cylinder need replacement?
A: Replace or rebuild a wheel cylinder when brake fluid leaks from the inspection port, the brake pedal feels soft or spongy, or brakes fade during operation. Typical service life is 3000 to 5000 operating hours with proper brake fluid maintenance.
Q: What brake fluid viscosity works with the 5914389981?
A: Use ISO VG 46 or DOT 3 hydraulic fluid only. Incorrect fluid viscosity causes slow brake response or pressure loss. Do not mix fluid types in the brake system, as this degrades seals inside the 5914389981 cylinder.