259-0815(10R-8707) CAT330D/336D Fan Pumpr for Caterpillar 30-ton D-series Large Construction Excavator spare parts

product parameters

• Genuine dual part number 259-0815/10R-8707 universal interchangeable, exclusively calibrated for CAT330D/336D C9 engine heat dissipation system, perfectly matching D-series hydraulic parameters and temperature control logic with zero power mismatch.
• Heavy-duty high-precision gear pump structure effectively reduces internal leakage and flow pulsation, ensuring constant fan speed without jitter or speed drop under long-term full-load high-temperature working conditions.
• Thickened reinforced bearing and wear-resistant gear configuration enhances load resistance and high-temperature fatigue resistance, adapting to high-frequency heavy-duty operation of 30-ton D-series large excavators with low wear rate and long service life.
• Excellent high-temperature pressure stability, no pressure attenuation or stalling in extreme high-temperature environments, fundamentally solving the inherent overheating problem of D-series equipment during hard rock excavation and continuous heavy-load operation.
• Integrated high-rigidity pump body design resists construction vibration and oil pollution impact, maintaining stable working performance in harsh mine and earthwork complex working conditions with ultra-low failure rate.
• Independent oil supply circuit design separates the heat dissipation hydraulic system from the main hydraulic system, avoiding mutual hydraulic interference and improving the overall operational stability of the whole machine.
• Original standard mounting size supports 1:1 non-destructive direct replacement, no modification or debugging required, greatly reducing equipment downtime and daily maintenance costs.

• Regularly check the mounting bolts, inlet and outlet oil joints and sealing surfaces of 259-0815(10R-8707) fan pump to eliminate oil leakage risks caused by long-term heavy-load vibration and mechanical impact on construction sites.
• Clean fan blades and radiator dust and dirt regularly to prevent heat dissipation blockage, avoid long-term overload operation of the fan pump and delay internal component wear and aging.
• Replace hydraulic oil and special filter elements according to Caterpillar official maintenance cycle to prevent hard impurity particles from scratching precision gear pairs and bearings, ensuring stable pump body flow and pressure output.
• Periodically detect the output pressure and flow rate of the fan pump to ensure stable operation within the rated range and meet the full-load heavy-duty heat dissipation requirements of CAT330D/336D excavators.
• Avoid long-term extreme high-temperature overload operation and abnormal hydraulic pressure impact to reduce fatigue wear of internal precision components and extend the service life of the fan pump.
• Timely replace genuine 259-0815(10R-8707) fan pump when faults such as weak heat dissipation, unstable fan speed, pump body oil leakage and continuous system high temperature occur to restore equipment heavy-duty cooling performance.