CATEngine Parts

191-3234 Final Drive Gearbox — Cat 320B

This final drive gearbox is a crucial part of the undercarriage system, providing the necessary torque to propel the excavator. Manufactured to meet stringent quality standards, it ensures robust performance and durability, outlasting worn or damaged original units. Operators may observe a loss of drive power, unusual grinding noises, or slow track movement when this component begins to fail.

Final Drive Gearbox – Part No 191-3234 – 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 TypeFinal Drive Gearbox
MaterialHardened steel gears, cast iron housing
ApplicationUndercarriage drive system
Service LifeReplace as needed based on inspection and performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A noticeable reduction in track speed or power, accompanied by audible grinding or whining noises, are common indicators of a failing final drive gearbox. If ignored, the gearbox may seize, preventing the machine from moving, or cause damage to the drive motor and track components. Continued operation risks immobilizing the equipment and causing extensive drivetrain damage.

Installation Tip

Thoroughly clean the mounting surfaces and ensure all old sealant is removed to prevent leaks. Always use the correct type and amount of final drive lubricant as specified by the manufacturer.

Service Note

Inspect the hydraulic drive motor, planetary gears, and final drive oil for contamination or wear.