CATHydraulic Parts

3G2640 Gear Pump-Hydraulic — Cat 988B

This gear pump is a vital component of the hydraulic system, responsible for generating the necessary flow and pressure to operate machine functions. Manufactured to meet stringent CAT specifications, it provides reliable performance and durability, unlike a worn pump that may suffer from reduced output or internal leakage. Operators may notice a significant loss of hydraulic power, slow or inoperative implement movements, or a whining noise from the hydraulic pump when this unit fails.

Gear Pump-Hydraulic – Part No 3G2640 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

T.', };

Related CAT Parts

From the same category — may also be needed

1376500
Rotocoil As
459a
Fuel Cap 2658575 With Keys
2255495
Hydraulic Component
1103269
Cylinder Gp- Bulldozer Lift
4264051
Female Hydraulic Flat Face
3818054
Cylinder Gp- Hydraulic

Browse all CAT Hydraulic Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 TypeGear Pump
MaterialCast iron and hardened steel gears
ApplicationHydraulic system
Service LifeReplace every 5,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing gear pump is often a noticeable reduction in hydraulic system performance, such as slower boom or bucket movements. If ignored, this can progress to a complete loss of hydraulic power, making the equipment inoperable. Continued operation with a faulty pump risks overheating the hydraulic fluid and potentially damaging other critical hydraulic components.

Installation Tip

Thoroughly clean the hydraulic reservoir and inspect the suction line for any restrictions or damage before installing the new gear pump. Ensure the pump shaft is properly aligned with the drive coupling to prevent premature wear on the shaft or coupling.

Service Note

When replacing the hydraulic gear pump, inspect the hydraulic fluid and filter for contamination and consider replacing them to ensure system cleanliness.