CATEngine Parts

1107216 Gear-Sun — Cat 320C 320D

This sun gear is a vital component within the planetary gear set of the final drive or transmission system, transmitting torque and enabling rotational movement. Manufactured to meet rigorous CTP aftermarket standards, it offers robust durability and precise meshing compared to a worn gear exhibiting chipped teeth or excessive play. Operators may observe grinding noises during operation, difficulty engaging gears, or a loss of drive power when this gear is compromised.

Gear-Sun – Part No 1107216 – 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 forged steel
ApplicationPlanetary gear set (final drive/transmission)
Service LifeReplace as needed based on wear and damage
CompatibilityCTP aftermarket replacement for Caterpillar
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The first indication of a failing sun gear is often an increase in operational noise, such as grinding or whining, from the drive train. If left unaddressed, this can progress to intermittent power loss or difficulty in engaging gears. Continued operation risks further damage to the entire gear set and potential immobilization of the equipment.

Installation Tip

Ensure all mating surfaces are meticulously cleaned and free of debris before assembly to prevent premature wear on the new gear teeth. Avoid forcing the gear into place; it should seat smoothly if aligned correctly with the other gear set components.

Service Note

Inspect the planet gears, ring gear, bearings, and lubricant for contamination or excessive wear when replacing the sun gear.