CATEngine Parts

1246662 Transmission Pump — Cat 3306

This transmission pump is a vital component responsible for generating hydraulic pressure to operate the transmission system in Caterpillar wheel loaders and equipment with specific engines. It ensures smooth gear changes and power transfer by circulating transmission fluid under pressure, meeting stringent OEM standards for performance and longevity. Operators may notice delayed shifting, slipping gears, or a complete loss of transmission drive when this pump begins to fail.

Transmission Pump – Part No 1246662 – 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 TypeTransmission Pump
MaterialCast iron and steel
ApplicationTransmission hydraulic system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing transmission pump is often a noticeable hesitation or slipping during gear changes. If ignored, this can progress to intermittent or complete loss of drive power, making the equipment inoperable. The worst consequence is severe internal transmission damage due to insufficient lubrication and hydraulic pressure.

Installation Tip

Ensure the transmission housing and pump mounting surface are meticulously cleaned to prevent contamination of the hydraulic system. Never operate the transmission without the correct level and type of hydraulic fluid, as this can quickly damage the new pump.

Service Note

Replace the transmission oil filter and flush the transmission hydraulic lines to remove any contaminants before installing the new pump.