CATEngine Parts

6y-0859 Floating Seal — Cat 3406 C15

Name: 6y-0859 Floating Seal — Cat 3406 C15
Brand: CAT
SKU: 6y-0859
Availability: InStock

This floating seal is a critical sealing component used in rotating assemblies, such as in final drives or transmissions, to prevent lubricant leakage and contaminant ingress. It is constructed from durable materials designed to withstand high pressures and abrasive environments, offering superior sealing compared to a worn or damaged seal. Operators may observe lubricant leaks around the final drive or transmission housing, or hear increased noise from these components.

Floating Seal – Part No 6y-0859 – CAT Spare Part

Part Specifications

Brand	CAT
Category	Engine Parts
Condition	Aftermarket — OEM Specification
Dispatch	Same-day from Mumbai (before 3 PM IST)
GST Invoice	Available — all orders
Export Docs	Commercial invoice, packing list, COO

Compatible Models

CAT Engine C7 1 3406 3304 3116 C15 C6 6 Loader 933C 939C 953D 963D

Always verify with serial number before ordering.

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Parts Trading Company · Mumbai, Est. 1956 · Same-day dispatch · Ships worldwide · GST invoice included

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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 Type	Floating Seal
Material	Steel, rubber (NBR/Viton)
Application	Final drive, transmission, axle housing
Service Life	Replace as needed based on inspection and leaks
Compatibility	OEM specification
Condition	New — OEM specification aftermarket

Failure Symptoms

The first sign of a failing floating seal is typically the appearance of lubricant leakage around the affected component, such as a final drive or axle housing. If left unaddressed, the leakage will worsen, potentially leading to a significant loss of lubricant. This can result in increased wear and heat within the component, potentially leading to premature failure of gears and bearings.

Installation Tip

Ensure the mating surfaces on both the shaft and housing are perfectly clean and free of any burrs or damage before installation. Carefully press the seal components together and into their respective housings, ensuring they seat evenly without tilting.

Service Note

When replacing floating seals, inspect the condition of the shaft or bore surfaces for wear or damage, and check the lubricant for contamination.

6y-0859 Floating Seal — Cat 3406 C15

Compatible Models

Related CAT Parts

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Installation & Application Notes

Failure Symptoms