CATHydraulic Parts

7S7400 Gear Pump-Hydraulic — Cat 583K 594

This is a high-pressure gear pump designed to circulate hydraulic fluid within the main hydraulic system of Caterpillar equipment. It is manufactured to meet stringent OEM material and dimensional standards, ensuring reliable performance and durability compared to a worn pump that may exhibit reduced flow or internal leakage. Operators may notice slow or erratic hydraulic functions, such as loader arm movement or steering, when this pump begins to fail.

Gear Pump-Hydraulic – Part No 7S7400 – 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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Hydraulic Component

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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 based on performance monitoring
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing 7S7400 gear pump include a noticeable decrease in hydraulic system speed and responsiveness. If left unaddressed, the pump's performance will continue to degrade, leading to intermittent loss of hydraulic power. Continued operation with a severely worn pump risks overheating the hydraulic system and damaging other critical components.

Installation Tip

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

Service Note

Inspect hydraulic lines, filters, and the hydraulic fluid reservoir for any signs of contamination or wear when replacing the gear pump.