CATEngine Parts

154-0761 Boom Cylinder Seal Kit — Cat 3116 325B

This seal kit is designed to replace worn or leaking seals within the boom cylinder of CAT equipment, ensuring proper hydraulic pressure and smooth operation. It is manufactured to meet stringent OEM standards, providing superior sealing performance compared to degraded, cracked, or hardened original seals. Operators may notice a loss of hydraulic power, slow or jerky boom movements, or visible hydraulic fluid leaks when these seals begin to fail.

Boom Cylinder Seal Kit – Part No 154-0761 – 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
CompatibilityCAT specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Visible hydraulic fluid leaks around the boom cylinder rod are the first indication of seal failure. If ignored, the leaks will worsen, leading to a gradual loss of hydraulic system pressure and reduced lifting capacity. Continued operation with failing seals can result in unpredictable boom movement and potential damage to other hydraulic components.

Installation Tip

Ensure the cylinder rod is clean and free of any burrs or debris before attempting to install the new seals. Do not use excessive force or sharp tools, as this can easily damage the new seals during installation.

Service Note

Inspect the cylinder rod for scoring and the cylinder bore for wear when replacing the boom cylinder seals.