CATHydraulic Parts

3P7958 Gear Pump-Hydraulic — Cat 518 518C

This is a hydraulic gear pump designed to deliver pressurized fluid to operate various hydraulic functions within the equipment's system. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to worn or damaged units. Operators may notice a loss of hydraulic power, sluggish implement movement, or unusual noises from the hydraulic system when this pump begins to fail.

Gear Pump-Hydraulic – Part No 3P7958 – 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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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 TypeHydraulic Gear Pump
MaterialHardened Steel Alloy
ApplicationMain Hydraulic System
Service LifeReplace every 3,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing gear pump include a noticeable decrease in hydraulic system pressure and slower operation of hydraulic-driven components. If left unaddressed, the pump's internal wear will worsen, leading to a significant loss of lifting capacity and control. Continued operation with a failing pump risks damage to other critical hydraulic components due to increased heat and potential debris.

Installation Tip

Thoroughly flush the hydraulic system and clean the reservoir before installation to remove any debris that could damage the new pump. Avoid overtightening the mounting bolts, as this can distort the pump housing and cause internal binding.

Service Note

Inspect the hydraulic fluid and filter for signs of wear debris, and check the suction line for any restrictions or leaks.