CATBrake Parts

5V4004 Cylinder As — Cat 950

This cylinder assembly is a crucial part of the hydraulic or braking system, converting fluid pressure into mechanical force to operate actuators. It is built to meet Caterpillar's exacting standards for durability and precise operation, unlike a worn cylinder that might exhibit internal scoring or external leaks. Operators may observe sluggish hydraulic functions, a soft pedal in braking systems, or fluid leakage around the cylinder when this component is compromised.

Cylinder As – Part No 5V4004 – 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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Cylinder As

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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 TypeCylinder Assembly
MaterialSteel and Rubber Seals
ApplicationHydraulic or Brake System Actuation
Service LifeReplace based on inspection for leaks or performance issues
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Early indications of a failing cylinder assembly include slow or jerky operation of the connected system, or a noticeable drop in pressure. If the issue progresses, internal seals may fail, leading to fluid bypass and a complete loss of function or hydraulic leaks. This can render the equipment inoperable or unsafe to use.

Installation Tip

Ensure all hydraulic lines are properly flushed and free of contaminants before connecting them to the new cylinder. Avoid overtightening hydraulic fittings, which can damage the threads or the fitting itself.

Service Note

Inspect hydraulic lines, seals, and fluid for contamination or leaks when replacing the cylinder assembly.