CATBrake Parts

1233426 Cylinder As-Brake Master — Cat 416c 426c

This is the brake master cylinder assembly, responsible for generating hydraulic pressure to operate the vehicle's braking system. It is built to exacting standards, providing consistent and reliable braking force, unlike a worn unit that may leak internally or externally. Operators might experience a soft or sinking brake pedal, reduced braking power, or the brake warning light illuminating on the dash when this component is failing.

Cylinder As-Brake Master – Part No 1233426 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBrake Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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Installation & Application Notes

Always replace brakes in axle sets. Bed-in new brake pads with 8–10 moderate stops from 40 km/h. Check disc runout with a dial gauge — maximum 0.1 mm. Inspect caliper slides and pistons when replacing pads.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeBrake Master Cylinder Assembly
MaterialCast iron, aluminum, and rubber seals
ApplicationMain brake hydraulic system
Service LifeReplace every 3,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A spongy or low brake pedal that sinks to the floor is a common initial symptom of a failing brake master cylinder assembly. If ignored, braking performance will progressively worsen, leading to dangerously long stopping distances. In the worst-case scenario, a complete loss of hydraulic pressure can render the braking system inoperable, posing a significant risk to equipment and personnel.

Installation Tip

Ensure the brake fluid reservoir is clean and free of debris before filling to prevent contamination of the new cylinder. Never reuse old brake fluid; always use fresh, specified fluid.

Service Note

Inspect brake lines for leaks or damage, and check brake fluid level and condition when replacing the master cylinder assembly.