Product Description
OEM master cylinder 91246-45300 is designed as a direct replacement for hydraulic brake systems in Caterpillar and Mitsubishi electric lift trucks. Key features include cast aluminum construction, steel piston, and internal return spring. The assembly converts mechanical pedal input to hydraulic pressure for service brake actuation. No cross-reference part numbers beyond 91246-15300 are confirmed; detailed port and bore dimensions require direct verification from the installed component.
Specifications
Part Numbers & Compatibility
| Make | Caterpillar, Mitsubishi |
| Model | FG10F25, FG15F25, FG18F25, FG18AF25, FD20F18A, FD23F18A, FD25F18A, FD30F14B, FG30F13C, 2FBC25A2BC2, 2FBC25EA2BC3, FD30AF14B, FD35AAF26, FD20AF18A, FD23AF18A, FD25AF18A, FD35AF26, FG35AF13C, FG30AF13C, FG35AAF13C, 2FBC30A2BC3, FG20AF17A, FG25AF17A, 2FBC20A2BC2 |
| Part Number | 91246-45300 |
| Equivalent Part Numbers | 91246-15300 (noted for related Mitsubishi brake master cylinders; verify compatibility before interchange) |
Additional Specifications
| Hydraulic Function | Converts mechanical input force to hydraulic pressure for brake actuation |
| Body Material | Cast aluminum housing with precision-machined bore |
| Seal Materials | Brake fluid compatible synthetic elastomer seals; kit available under OEM service part |
| Description | OEM master cylinder 91246-45300 is designed as a direct replacement for hydraulic brake systems in Caterpillar and Mitsubishi electric lift trucks. Key features include cast aluminum construction, steel piston, and internal return spring. The assembly converts mechanical pedal input to hydraulic pressure for service brake actuation. No cross-reference part numbers beyond 91246-15300 are confirmed; detailed port and bore dimensions require direct verification from the installed component. |
Frequently Asked Questions
Q: Which lift truck brands and models is the 91246-45300 compatible with?
A: The 91246-45300 is compatible with Caterpillar and Mitsubishi electric lift trucks, including models such as FG10F25, FG15F25, FG18F25, FG18AF25, FD20F18A, FD23F18A, FD25F18A, FD30F14B, FG30F13C, 2FBC25A2BC2, 2FBC25EA2BC3, FD30AF14B, FD35AAF26, FD20AF18A, FD23AF18A, FD25AF18A, FD35AF26, FG35AF13C, FG30AF13C, FG35AAF13C, 2FBC30A2BC3, FG20AF17A, FG25AF17A, 2FBC20A2BC2.
Q: What material is the 91246-45300 constructed from?
A: The 91246-45300 is constructed with a cast aluminum housing, precision-machined bore, and steel piston. This combination provides durability while maintaining heat dissipation in hydraulic brake applications.
Q: What should I consider before replacing the 91246-45300?
A: Before replacing the 91246-45300, verify compatibility with your specific lift truck model. Check for matching port configuration, bore diameter, and mounting flange specifications to ensure proper fit and function.
Q: Are there any related part numbers for the 91246-45300?
A: The 91246-15300 is noted as a related part number for certain Mitsubishi brake master cylinders. However, do not assume automatic interchangeability. Confirm compatibility before substituting one for the other.
Q: What maintenance is required for the 91246-45300?
A: Regularly check for external leakage around the piston rod seal and port connections. If fluid loss, spongy pedal feel, or pressure loss occurs, the unit should be tested and replaced if internal seal wear is confirmed.