Transmission Charge Pump AT440858 AT310585 For John Deere 310SK 310SL 315SJ 310L
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Product Overview
The charge pump supplies oil to the transmission control and lubrication circuits. Slow engagement, low pressure, noise, overheating, or poor transmission response can indicate pump wear after filters, oil level, suction leaks, and control components have been checked.
Replacement references include AT440858, AT310585. Compare the part number, transmission model, mounting pattern, shaft, ports, and rotation before ordering.
Key Features & Performance
- Designed for compatible backhoe and transmission applications
- Replacement for a worn or damaged charge pump
- Restores transmission charge-oil flow
- Supports lubrication and control pressure
Fitment & Compatibility
Compatible with John Deere 310SK, 310SL, 310L, and 315SJ backhoe loaders. Serial-number breaks, production changes, or equipment options may affect the required part.
Technical Specifications
- Product Type: Transmission Charge Pump
- Compatible Brand: John Deere
- Part Number(s): AT440858, AT310585
Frequently Asked Questions
Q: What should be checked before replacing a transmission charge pump? A: Verify oil level and condition, filters, suction lines, pressure readings, control valves, and transmission wear before confirming pump failure.
Q: Is this an original OEM part? A: No. This is a quality aftermarket replacement designed for compatible applications.
Compatibility may vary by serial number, production date, or equipment configuration. Verify fitment before purchase.