CATHydraulic Parts

1s9826 Gear Assem. (12 Teeth) — Cat 621 D9H

This 12-tooth gear assembly is a precision-engineered component within the hydraulic system, essential for transmitting power and driving hydraulic functions. Manufactured to meet strict OEM quality standards, it ensures optimal performance and longevity, unlike a worn or damaged gear set. Operators may notice increased noise levels from the hydraulic system, a loss of power, or erratic operation of hydraulic-driven components when this assembly fails.

Gear Assem. (12 Teeth) – Part No 1s9826 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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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Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

Installation & Application Notes

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeGear Assembly
MaterialHardened steel
ApplicationHydraulic system drive train
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing gear assembly might be an increase in whining or grinding noises from the hydraulic system. If ignored, the wear on the gear teeth can worsen, leading to a loss of hydraulic pressure and power. The ultimate consequence is potential damage to other internal hydraulic components and a complete loss of hydraulic function.

Installation Tip

Ensure the gear teeth are properly meshed with their mating gear and that the assembly rotates freely by hand before final assembly. Avoid forcing the assembly into place, as this can indicate misalignment or damage.

Service Note

Inspect the mating gear and any associated bearings or seals for wear or damage when replacing this gear assembly.