CATEngine Parts

255-6805 Piston Motor — Cat C15

This is a piston motor, a key component in hydraulic systems that converts hydraulic pressure into mechanical rotational force. It is built to meet rigorous OEM standards, offering durability and consistent performance compared to a worn motor that may exhibit reduced torque or leaks. Operators may notice a loss of power, sluggish hydraulic functions, or unusual noises from the hydraulic system when this component is failing.

Piston Motor – Part No 255-6805 – 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 TypeHydraulic Piston Motor
MaterialHardened steel and aluminum alloy
ApplicationHydraulic drive system
Service LifeReplace every 5,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A noticeable decrease in the speed or torque of the driven component, such as slower travel speed or weaker implement response, is an early sign of motor failure. As the problem worsens, the motor may start to make grinding or whining noises, and hydraulic fluid leaks may become apparent. Continued operation with a failing motor can lead to loss of drive or implement control, potentially immobilizing the equipment.

Installation Tip

Thoroughly flush the hydraulic lines and components before installing the new motor to remove any contaminants. Ensure the motor shaft is properly aligned with the drive mechanism to prevent binding.

Service Note

When replacing a hydraulic piston motor, it is crucial to inspect and replace the hydraulic filters and check the condition of the hydraulic fluid.