CATEngine Parts

179-9634 Boom Cylinder Seal Kit — Cat 3046 3066

This is a CAT Boom Cylinder Seal Kit, designed to replace worn or leaking seals within the hydraulic boom cylinder assembly. It is manufactured to meet OEM specifications, providing a reliable seal that prevents hydraulic fluid loss and contamination, unlike degraded original seals. Operators may notice slow or jerky boom movements, hydraulic fluid leaks around the cylinder, or a loss of lifting capacity when this seal kit fails.

Boom Cylinder Seal Kit – Part No 179-9634 – 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, PTFE
ApplicationBoom cylinder
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Visible hydraulic fluid leaks around the boom cylinder rod or casing are the primary indicator of seal failure. If left unaddressed, this leakage will worsen, leading to a gradual loss of hydraulic pressure and reduced lifting performance. Continued operation with leaking seals can cause damage to other hydraulic components due to fluid loss and contamination.

Installation Tip

Thoroughly clean the cylinder bore and rod before installing the new seals to prevent damage from debris. Ensure the seals are correctly oriented and lubricated with appropriate hydraulic fluid before insertion.

Service Note

Inspect the hydraulic fluid for signs of contamination and check the condition of the cylinder rod for scoring or damage.