CATHydraulic Parts

sbs80 Hydraulic Main Pump — Cat CAT312C EXCAVATOR

This hydraulic main pump is the heart of the machine's hydraulic system, generating the flow and pressure required for all hydraulic functions. It converts mechanical energy into hydraulic energy, enabling operation of actuators like cylinders and motors. A failing main pump will result in sluggish or erratic hydraulic movements and a noticeable drop in system pressure.

Hydraulic Main Pump – Part No sbs80 – 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

7J9838
Caterpillar Cylinder Gp- Steering 7J9838
9J5059
Caterpillar Pump G 9J5059
9T1080
Caterpillar Pump G - Vane 9T1080
4I9469 (SET)
Hydraulic Component 4I9469 (SET) 4I9469 (SET) 4I9469 (SET)
1214312
Pump G-Ps
3349982 (9) SET
Hydraulic Component

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 TypeHydraulic Main Pump
MaterialCast Iron and Steel Alloy
ApplicationMain Hydraulic Circuit
Service LifeReplace based on performance degradation or failure
CompatibilityCAT Cat312C Excavator
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing hydraulic main pump is a noticeable decrease in the speed and power of hydraulic functions. If left unaddressed, this will progress to intermittent loss of hydraulic control and increased cycle times. Continued operation risks stalling the machine or rendering critical functions inoperable.

Installation Tip

Always replace the hydraulic system filter when installing a new main pump to prevent contamination. Ensure the pump is properly primed with hydraulic fluid before initial startup to avoid dry running.

Service Note

Replace the hydraulic system filter and inspect all hydraulic hoses and fittings for leaks when installing a new main pump.