Catarpillar 234-4638 Axial Variable Displacement Piston Pump Assembly made in China

Catarpillar 234-4638 Axial Variable Displacement Piston Pump Assembly Catarpillar axial variable piston pump group, load‑sensing pressure‑compensated main hydraulic pump. Fits C AT 330C, 330CL, 330CLN, 330CFM excavator with C‑9 engine. Supplies high‑pressure hydraulic oil for digging, swing and travel circuits. SAE flange mounting, spline input shaft. Variable displacement adjusts flow according to working load to reduce power loss and heat generation. Rebuildable unit,