CATEngine Parts

170-9929 Boom Cylinder Seal Kit — Cat Engine 3064 Excavator 311C

This is a CAT Boom Cylinder Seal Kit designed to maintain hydraulic system integrity. It is manufactured to meet stringent OEM quality standards, ensuring superior sealing performance compared to worn or damaged seals. Operators may notice hydraulic system leaks, sluggish boom movement, or a loss of lifting power when this seal kit fails.

Boom Cylinder Seal Kit – Part No 170-9929 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine 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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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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

Part TypeHydraulic Cylinder Seal Kit
MaterialNBR rubber and high-strength polymers
ApplicationBoom cylinder hydraulic system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Visible hydraulic fluid leaks around the boom cylinder rod are the first sign of seal failure. If ignored, the leaks will worsen, leading to a gradual loss of hydraulic pressure and reduced lifting capacity. Continued operation with compromised seals can lead to premature wear on other hydraulic components.

Installation Tip

Ensure the cylinder rod is clean and free of burrs before installing new seals to prevent immediate damage. Do not force seals into the gland; they should seat smoothly with appropriate tooling.

Service Note

Inspect the hydraulic fluid for contamination and check the cylinder rod for scoring or damage before installing the new seal kit.