This is a Rexroth A4VG90 hydraulic pump, identified by part number FPCY2507254, designed for use in Volvo L45B loaders. It is a high-performance variable displacement piston pump that provides precise hydraulic power to the machine's functions. Manufactured to meet rigorous standards, it offers superior durability and efficiency over worn units, and failure symptoms include erratic hydraulic control, loss of power, and unusual pump noise.
Always verify with serial number before ordering.
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Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
A malfunctioning Rexroth A4VG90 pump will initially cause inconsistent or sluggish hydraulic movements and a potential loss of overall machine power. If the issue progresses, the pump may produce loud whining or grinding noises, and hydraulic functions could become completely unresponsive. Continued operation with a failing pump risks severe damage to the pump itself and other hydraulic system components.
Before installing, ensure the hydraulic system is completely clean and free of any contaminants that could damage the pump's internal components. Do not introduce air into the system during installation; prime the pump according to manufacturer guidelines.
When replacing the main hydraulic pump, always inspect and replace the hydraulic system's filter element to prevent contamination.