CATEngine Parts

149-5105 Gear Pump Hub Support Flange — Cat 3003 301

This gear pump hub support flange is a crucial structural component within the hydraulic system, providing a stable mounting point for the gear pump assembly. Manufactured to meet stringent OEM standards, it ensures the integrity of the hydraulic system, unlike a cracked or deformed flange that can lead to leaks and pump misalignment. Operators may experience erratic hydraulic functions, low system pressure, or audible pump noise when this support flange is compromised.

Gear Pump Hub Support Flange – Part No 149-5105 – 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 TypeGear Pump Hub Support Flange
MaterialCast iron
ApplicationHydraulic pump mounting
Service LifeReplace if damaged or during pump overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing hub support flange is often a visible hydraulic fluid leak around the pump mounting area. If not addressed, this can lead to a loss of hydraulic pressure, erratic operation of hydraulic functions, and increased noise from the pump. Continued operation with a compromised flange can result in significant damage to the gear pump and other hydraulic components.

Installation Tip

Ensure the mounting surfaces on both the pump and the machine frame are perfectly clean and flat before assembly. Use the correct thread-locking compound on mounting bolts as specified in the service manual.

Service Note

Inspect the gear pump seals and the pump housing for any signs of wear or damage when replacing the hub support flange.