Product Description
Master cylinder
Frequently Asked Questions
Q: What equipment is the 91246-20053 master cylinder compatible with?
A: The 91246-20053 master cylinder is a direct replacement for hydraulic brake systems in electric lift trucks from major OEM brands including Mitsubishi and Caterpillar. Verify your equipment model and brake system configuration before ordering to confirm fitment.
Q: What material is the 91246-20053 master cylinder constructed from?
A: This master cylinder is constructed with cast iron housing and internal steel components. The cast iron construction provides durability and thermal stability in hydraulic brake applications for industrial material handling equipment.
Q: What fluid type does the 91246-20053 master cylinder require?
A: Use DOT 3 or DOT 4 brake fluid as specified by your equipment manufacturer. Do not mix fluid types, as this can compromise seal integrity and brake system performance. Check your service manual for the exact specification for your lift truck model.
Q: How long does a master cylinder typically last in service?
A: Master cylinder lifespan depends on duty cycle, brake fluid maintenance, and seal condition. Under normal material handling use, expect 3000 to 5000 operating hours before seal wear requires replacement. Routine fluid level checks and contamination control extend service life.
Q: What are the signs of master cylinder failure?
A: Common failure indicators include soft or spongy brake pedal feel, loss of braking pressure, internal fluid leakage into the piston chamber, and external fluid seepage around the rod seal. If you notice any of these symptoms, test the unit and replace it if performance is degraded.