Caterpillar's backhoe loader range runs a closed-centre, load-sensing hydraulic system with a variable displacement axial piston pump — the same fundamental architecture across the 416 through 444 series, with displacement and flow scaled to machine size. On a 428C, this pump delivers around 163 LPM at 207 bar, enough to run loader, backhoe, steering and stabilisers with the responsiveness CAT is known for.
Caterpillar Backhoe Loader Pump — Series by Series
| Series | Common Pump P/N | Pressure | Flow (approx) | New OEM Price* | PumpGrid Price* |
|---|---|---|---|---|---|
| 416B / 426B / 428B / 436B / 438B | 100-3259 / 0R-9645 | 200-210 bar | 140-160 LPM | ₹1.1L+ | Enquire |
| 416D / 424D | 2354108 | 207 bar | ~163 LPM | ₹1.3L+ | Enquire |
| 416E/F, 422F, 428F, 434F | 3073063 | 207 bar | ~163-175 LPM | ₹1.6L+ | Enquire |
| 432F | 398-7480 | 210 bar | ~175 LPM | ₹1.8L+ | Enquire |
*Indicative prices. Actual prices vary by condition, availability and market. WhatsApp for current quote — confirm your exact series and letter suffix before ordering.
Understanding the CAT Load-Sensing System
What Load-Sensing Means
Rather than running at constant maximum flow, CAT's closed-centre load-sensing pump adjusts output to match exactly what the loader, backhoe or steering function demands at any moment — improving fuel efficiency and giving finer control at the joystick.
The Torque Limiter
CAT's system includes a torque limiter that destrokes the pump if signal pressure exceeds a set threshold — protecting the engine from being overloaded when multiple functions are demanded simultaneously. This is a precision component that must be correctly calibrated during refurbishment, not just replaced generically.
What Our Refurbishment Covers
Full disassembly. Piston, slipper and swashplate wear measured against CAT tolerance. Torque limiter and margin spool function tested and recalibrated. Shaft seal and all O-rings replaced as standard. Bench pressure test with flow measurement at rated speed. Written report issued.
Why Fleet Owners Choose Refurbished CAT Pumps
Dealer Lead Time Avoided
New CAT pump assemblies through the official dealer network are precision-built to order in many cases, with lead times that can stretch beyond a month. PumpGrid dispatches tested refurbished units in 2-3 working days.
₹70,000-₹1.2 Lakh Saved Per Unit
CAT parts carry a premium reflecting the brand's build quality — a refurbished pump from PumpGrid typically saves 40-60% against new OEM pricing without sacrificing tested performance.
Documentation That Matches CAT's Own Standards
GMMCO and other CAT dealer networks in India expect thorough documentation. Our written pressure and flow test report is built to the same standard your fleet manager already expects.
Warranty That Protects Downtime-Sensitive Fleets
3-month minimum warranty, confirmed in writing. For contractors running CAT fleets where every hour of downtime is costly, we replace — not repair — any unit that fails due to a refurbishment defect.
Is Your CAT Backhoe Loader Showing These Signs?
If 2 or more of the above apply, the pump likely needs refurbishment. WhatsApp us your machine's exact series and letter suffix with the symptoms and machine hours.