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AA4VG56HD1DT1/32L-PSC52F015S-S (R902087937)
Axial piston variable pump A4VG. Geometric displacement 56 cm3. Pressure cut-off. Stroking chamber pressure port X3, X4. Without DA control valve. Series 3, index 2. Direction of rotation (viewed on drive shaft): counter-clockwise. Filtration in the boost pump pressure line. Attachment filter with cold start valve and visual contamination indicator.
The above diagrams belong to Rexroth www.boschrexroth.com