Replacement main and auxiliary relief valves designed for 907 excavator models to improve hydraulic conversion rates and restore reliable pressure control. Key benefits Restores correct pressure balancing between main and auxiliary circuits, helping attachments operate as intended. Reduces risk of pump overload and erratic hydraulic response caused by worn or malfunctioning relief valves. Improves conversion efficiency when switching between main and auxiliary functions, supporting smoother operation and reduced downtime. Precision fit for 907 model excavators, simplifying installation and avoiding fitment issues. What this product does Functions as the main relief valve and the auxiliary relief valve that protect hydraulic circuits by regulating system pressure and limiting peak pressure events. Supports stable conversion between primary and auxiliary hydraulic outputs, maintaining consistent performance under load. Compatibility and fit Designed specifically for compatibility with 907 excavator model hydraulic systems. Manufactured to match original valve dimensions and mounting points for direct replacement without modifications. Key attributes Function: pressure relief and regulation for main and auxiliary hydraulic circuits. Compatibility: tailored for 907 excavator models. Size and fit: engineered to original dimensions for direct replacement and correct alignment. Construction: built for long service life and resistance to wear typical of hydraulic components. Performance: delivers consistent pressure control to help maintain conversion rates and hydraulic responsiveness. Practical applications and use scenarios Scheduled maintenance: worn valves during routine hydraulic system service to restore proper pressure limits and reduce risk of hydraulic component damage. Attachment integration: install when adding or commissioning auxiliary attachments so the hydraulic system maintains proper pressure distribution during conversion between functions. and troubleshooting: use as a replacement part when symptoms include fluctuating hydraulic pressure, sluggish auxiliary response, or frequent relief valve activation. Installation and maintenance notes Install with appropriate hydraulic fluid and follow system bleeding procedures to avoid air entrapment. Recommended to be installed and tested by a qualified technician or hydraulic specialist. Inspect surrounding seals, hoses, and fittings during replacement to ensure overall system integrity. This replacement valve solution is intended to match the function and fit required by 907 excavator hydraulic systems and to help improve conversion rates and operational reliability.