CATHydraulic Parts

173-3454 Swing Motor Seal Kit — Cat 320C

This swing motor seal kit is designed to maintain the integrity of the swing motor, preventing hydraulic fluid leaks and contamination ingress. Manufactured to meet stringent OEM specifications, these seals offer superior durability and sealing performance compared to worn or degraded seals. Operators may notice hydraulic fluid leaks around the swing motor, a loss of swing speed, or jerky swing movements when these seals fail.

Swing Motor Seal Kit – Part No 173-3454 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

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

Part TypeSeal Kit
MaterialNBR Rubber, PTFE
ApplicationSwing Motor
Service LifeReplace when leaks are detected or based on operating hours (e.g., 3,000-5,000 hrs)
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of failing swing motor seals is typically visible hydraulic fluid leakage around the motor housing. If ignored, the leakage will worsen, potentially leading to a loss of hydraulic pressure and reduced swing speed or erratic swing function. Continued operation with leaking seals can lead to internal motor damage and contamination of the hydraulic system.

Installation Tip

Carefully clean all internal and external surfaces of the swing motor housing and the shaft before installing the new seals. Ensure the seals are properly seated and oriented to prevent damage during installation.

Service Note

Inspect the swing motor gear and bearing for wear, and check the hydraulic fluid and filter for signs of contamination.