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| Part Name | Hydraulic Axial Piston Pump | Part Number | AN272979 |
| Pump Type | Axial Piston Variable Pump (Slanted-plate structure, open-loop design) | ||
| Origin | China | Quality | OEM Standard |
| Weight | 37.04 lb | Height | 8 in |
| Width | 8.2 in | Length | 12 in |
| Volume | 5.699 gal | Compatible Equipment | Cotton Pickers |
| Operating Oil Temp | -15°C to 90°C | Compatible Models | 9976, 9986, 9996 |
| Application |
1. Large-scale cotton field operations: Supporting continuous high-intensity harvesting for over 14 hours. 2. Complex terrain harvesting: Adapted for undulating landscapes, minimizing missed picks through load buffering. 3. Multi-environment Adaptability: Operates across wide temperature ranges and high dust levels. |
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Triple-protection system with a built-in 5-micron high-precision pre-filter and IP6K9K-rated seals. Limits leakage to under 0.3 mL/h—an 80% reduction compared to standard pumps.
Automatically boosts flow rate by 10% to compensate for pressure loss when contamination increases. Controls pressure fluctuations within ±8 bar to protect from impact damage.
Dual-spiral cooling channel design keeps oil temperature 15% cooler. Silicon carbide distributor plates extend service life to over 7,000 hours.
Fully compatible with hydraulic systems of 9976/9986/9996 models. Installation dimensions match original pumps for direct replacement without pipeline modifications.
The 150 cm³/rev version is for 9976, and the 180 cm³/rev version is for 9986/9996. Incorrect selection can cause insufficient power (if too low) or system overload and accelerated aging (if too high).
Dedicated pumps offer dust protection (NAS 8 rating), load buffering (fluctuations within ±8 bar), and thermal optimization. Standard pumps typically last only 2,500 hours in high-dust environments compared to our specialized design.
You must release system pressure to 0 bar, secure the picker head with safety locks, disconnect the battery, and clean all lint/dust around the pump. A full hydraulic oil change and filter replacement are highly recommended.
Yes, bolts must be tightened in three stages (50 N·m, 80 N·m, then 95±5 N·m) using a diagonal pattern. Using a standard wrench instead of a torque wrench can lead to vibration-induced leakage or pump body cracking.
For high-dust areas, change hydraulic oil every 2,500 hours, inspect seals every 800 hours, and replace filter elements every 250-300 hours to prevent clogging and power loss.
Idle for 3 minutes after startup, clean cooling channels daily with compressed air, and never operate with oil levels below minimum. Avoid spraying high-pressure water directly at shaft seals.
