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AT334876 PG200235 Gear Plunger Hydraulic Pump — Replacement part compatible with John Deere 310TJ/310TK/410G series backhoe loaders. It is precisely engineered to match the hydraulic system specifications of John Deere 310/410 series backhoe loaders. Installation interfaces and oil circuit layouts perfectly align with the original equipment, requiring no modifications to pipes or flanges. Compatibility is verified through 1:1 field testing. AT334876 is suitable for diverse applications including construction, municipal emergency response, agricultural planting, and mining operations. It withstands demanding conditions such as heavy-duty digging, frequent lifting, and continuous operation, while offering excellent compatibility with loader attachments (buckets, breakers, etc.).
| Part Name | Hydraulic Pump | Model Number | AT334876 / PG200235 |
| Unit | VARIABLE HYDRAULIC PUMP | Product Type | Hydraulic Gear Piston Pump |
| Compatible Equipment | Backhoe Loader | Pump Type | External Gear Pump |
| Weight | 70 lb | Height | 8 in |
| Width | 9.5 in | Length | 13.8 in |
| Operating Temperature | -20℃ ~ 100℃ | ||
| Related Models | AT179792, AT331223, AT317640, AT310590, AT440858, AT501973, AT153470, AT428960, AT101453, AT163523 | ||
| Application | Typical Operation | Parameter Values |
|---|---|---|
| Construction | Foundation excavation, building material loading/unloading. | Peak Pressure 30MPa: Meets breaker's instantaneous high-pressure demand; Flow Pulsation Rate ≤3%. |
| Municipal | Underground pipeline excavation, road maintenance, river dredging. | Temp tolerance -20°C to 100°C; NAS 8 cleanliness tolerance; ≤72dB(A) low-noise design. |
| Mining | Ore extraction, crushed stone loading, tunnel clearance. | 42CrMo plunger assembly (HRC 60-65); 25MPa rated pressure; Forced lubrication system. |
| Agriculture | Pond dredging, feed transfer, straw baling. | Efficiency ≥88%; Fluororubber seals resist bio-oil corrosion; 500 rpm minimum stable speed. |
The gear-plunger composite structure ensures smooth boom movement and high-pressure capability for attachments, resolving power issues during simultaneous "digging + lifting + rotating" actions.
Ductile iron pump body (≥500MPa) with wide-clearance valve design improves contamination resistance by 40%, perfect for dusty mining and muddy municipal sites.
SAE C-type flange achieves 1:1 compatibility. Standard maintenance personnel can complete replacement within 1-2 hours without pipeline modifications.
Volume efficiency ≥96% reduces fuel consumption by 10%-15%. Features a 12,000-hour trouble-free operation cycle, extending the industry average by 30%.
These are dual model designations for the same product, precisely compatible with John Deere 310 and 410 series backhoe loaders. They feature the same SAE C type flange and 32mm spline shaft.
Look for weak lifting (pressure < 20MPa), stuttering during compound actions, noise exceeding 80dB(A), abnormal oil temperature rise (> 85°C), or metal particles in the oil.
Yes, core performance matches or exceeds OEM. Volumetric efficiency is ≥96% (OEM ~94%), and contamination tolerance is 40% higher, with an MTBF of 12,000 hours.
No specialized tools are needed; standard socket and torque wrenches suffice. However, ensuring NAS 8 oil cleanliness and correct torque (220N·m) is critical.
Fill the pump with ISO VG 46 oil, purge air by rotating the shaft manually, perform three short engine bursts (5s each), and idle for 3-5 minutes before reaching rated speeds.
Replace high-pressure filters every 1000 hours, inspect oil cleanliness every 2000 hours, and replace fluororubber seals every 5000 hours to prevent aging and leakage.
