CATEngine Parts

247-8978 Piston Motor — Cat C18 C15

This piston motor is a crucial component in hydraulic systems, converting hydraulic pressure into rotational mechanical force to drive equipment. It is manufactured to high tolerances, ensuring efficient power delivery and longevity compared to a worn or leaking motor. Operators may notice a loss of speed or power in hydraulic functions, increased noise from the hydraulic system, or leaks around the motor when it begins to fail.

Piston Motor – Part No 247-8978 – 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 TypePiston Motor
MaterialHardened steel and bronze alloys
ApplicationHydraulic drive system
Service LifeReplace as needed based on performance and inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of a failing piston motor may include a gradual loss of speed or torque in the driven component. If ignored, the motor's performance will continue to degrade, leading to sluggish operation and potentially overheating of the hydraulic fluid. Continued use risks damage to other hydraulic system components due to increased strain or contamination.

Installation Tip

Ensure the hydraulic system is properly flushed and free of contaminants before installing the new motor. Do not mix old and new seals or O-rings; use only the specified replacement seals.

Service Note

Inspect the hydraulic filter and fluid for metal particles, and check the condition of hydraulic lines and fittings when replacing the piston motor.