CATTransmission Parts

191-2624 Gear Sun — Cat Excavator 312C 312C L 314C

This is a Gear Sun, a crucial component within the planetary gear set of the transmission, designed to transmit torque and facilitate gear ratios. It is precision-machined from high-grade steel to ensure durability and optimal meshing with other gears, providing reliable performance over a worn or damaged gear. Operators may observe increased gear noise, hesitation during acceleration, or a loss of drive power when this gear begins to fail.

Gear Sun – Part No 191-2624 – CAT Spare Part
Part Specifications
BrandCAT
CategoryTransmission 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

Drain and replace transmission fluid when servicing internal components. Use correct ATF specification. Pre-fill torque converters with fluid before installation. Allow 10 minutes for fluid to settle before checking level.

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 alloy
ApplicationPlanetary gear set, Transmission
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing sun gear may include a subtle increase in transmission noise or a slight roughness during gear engagement. If ignored, this can progress to noticeable gear grinding, intermittent loss of drive, or complete inability to transmit power through the affected gear set. This can significantly impair the machine's operational capability.

Installation Tip

Ensure the mating surfaces of the gear and its corresponding shaft or housing are perfectly clean and free from any burrs or debris. Proper alignment is crucial; do not force the gear into place.

Service Note

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