CATEngine Parts

1912683 Gear-Sun — Cat 320C 320D

This sun gear is a vital component within the planetary gear set of the final drive or transmission, transmitting rotational force and enabling gear reduction. Manufactured with high-grade steel and precision machining, it ensures optimal meshing and durability, unlike worn gears with chipped teeth or excessive play. Operators may observe increased noise, binding, or a complete loss of drive when this sun gear fails.

Gear-Sun – Part No 1912683 – 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
ApplicationPlanetary Gear Set (Final Drive/Transmission)
Service LifeReplace as needed based on inspection
CompatibilityCTP aftermarket replacement
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The initial symptom of a failing sun gear is often an abnormal grinding or whining noise from the drive train during operation. If ignored, this can progress to intermittent binding or a loss of power to the drive wheels. The worst-case consequence is complete failure of the gear set, resulting in immobility of the equipment.

Installation Tip

Thoroughly clean the gear housing and ensure all bearing surfaces are lubricated before installing the new sun gear. Avoid using excessive force to seat the gear; it should fit smoothly.

Service Note

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