CATEngine Parts

1484732 Gear-Sun — Cat 320C 320D

This sun gear is a crucial element within the planetary gear set of the final drive or transmission system, transmitting torque and enabling rotational movement. Manufactured to meet Caterpillar's stringent quality standards, it provides durable engagement and smooth power transfer, unlike a worn gear with chipped teeth or excessive backlash. Operators may notice increased noise, vibration, or a loss of drive power when this sun gear begins to fail.

Gear-Sun – Part No 1484732 – 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 TypeSun Gear
MaterialHardened steel
ApplicationFinal drive / Transmission planetary gear set
Service LifeReplace as needed based on wear and damage
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

A failing sun gear may initially produce audible clicking or grinding noises during operation, particularly when engaging or disengaging drive. If ignored, this can lead to a loss of drive power, excessive vibration, and potential damage to other components within the final drive or transmission.

Installation Tip

Ensure the gear housing and all mating surfaces are thoroughly cleaned and inspected for debris before installing the new sun gear. Proper lubrication with the specified gear oil is critical for initial break-in and long-term durability.

Service Note

Inspect the planet gears, ring gear, bearings, and seals for wear or damage when replacing the sun gear.