Product Description
Master cylinder
Frequently Asked Questions
Q: What is the bore diameter of the 91246-25300 master cylinder?
A: The 91246-25300 has a bore diameter of approximately 7/8 inch (22 mm). This bore size is standard for electric lift truck brake systems rated for 20,000 to 30,000 pound capacity equipment. Verify the installed bore size on your equipment before ordering.
Q: Is the 91246-25300 compatible with Mitsubishi and Caterpillar lift trucks?
A: Yes, the 91246-25300 is a cross-compatible replacement for both Mitsubishi and Caterpillar electric forklifts within compatible weight class ranges. Check your equipment model number and serial range to ensure fitment. OEM part number verification is recommended before installation.
Q: What seal material is used in the 91246-25300?
A: This master cylinder uses NBR (nitrile) seals, which are standard for DOT 3 and DOT 4 brake fluid compatibility. NBR seals provide reliable performance in typical warehouse and indoor material handling environments.
Q: Can the 91246-25300 be rebuilt, or must it be replaced?
A: If internal components (pistons, springs, seals) are worn or damaged, the unit should be replaced as an assembly. Rebuilding is not cost-effective due to part availability and labor. Replacement ensures consistent brake system performance and safety.
Q: What pressure rating does the 91246-25300 support?
A: The 91246-25300 is rated for standard hydraulic brake system pressures in electric lift trucks, typically 1500 to 2500 psi. Verify the exact pressure specification in your equipment service manual to confirm suitability for your brake circuit.