31LB-40500 Hydraulic Gear Pump Fan Pump for HL770-7A HL770-9 HL770-9S Bulldozer Excavator Loader Parts

Keywords: 31LB‑40500 hydraulic gear pump, 31LB‑40500 fan pump, HL770‑7A hydraulic fan gear pump, HL770‑9 HL770‑9S loader cooling pump, wheel loader hydraulic spare parts, aftermarket hydraulic gear pump assembly

Hydraulic Gear Fan Pump Part No.31LB‑40500 is double‑stage hydraulic gear pump specially used for cooling fan drive system, compatible with HL770‑7A, HL770‑9, HL770‑9S wheel loader. It provides stable hydraulic flow to drive cooling fan, maintains normal working temperature of engine and hydraulic system. This replacement pump effectively solves typical faults such as fan not rotating, fan speed insufficient, engine overheating, abnormal pump noise and internal oil leakage caused by gear wear, seal aging and pressure loss. Strictly manufactured according to OEM standards for direct replacement of original unit.

• OEM matching mounting dimensions, shaft spline and port position, direct bolt‑on installation without modification.
• High‑precision grinding gear set, low internal leakage, stable output pressure, reduce overheating risk.
• High‑performance oil seals, good resistance to hydraulic oil, long service life under continuous heavy‑load working.
• Compact double gear pump structure, strong anti‑vibration performance, adapt to harsh construction site environment.
• Strict factory performance inspection, every pump passes pressure test and leakage detection before delivery.
• Perfect interchangeability & easy maintenance, ideal for loader cooling system overhaul and field repair jobs.

Fit Equipment: HL770‑7A, HL770‑9, HL770‑9S wheel loaders ‑ Widely used for machinery repair workshops, equipment fleet maintenance and cooling hydraulic system overhaul projects.

• We are professional supplier of full‑range construction machinery spare parts, supplying hydraulic parts, engine parts, electrical parts, seal kits and complete overhaul kits. ‑ Large ready stock for various machinery spare parts ‑ Factory‑direct wholesale competitive price ‑ Mixed‑order & one‑stop spare‑parts procurement supported ‑ Professional part‑number matching technical support service

• Anti‑collision inner package, protect parts during transportation ‑ Export‑grade outer carton for safe sea and land transportation ‑ Multiple shipping options: sea freight, air freight, international express for small trial orders ‑ Export documents such as Commercial Invoice, Packing List can be provided.

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.