4. MAIN PUMP STRUCTURE (1/2) This variable displacement piston pump consists of steering pump and loader pump. 1) L1 B1 X1 L3 B2 X2 L2 S1 L4 S2 X1 X2 E/G L1 L2 S1 S2 Hydraulic circuit L3 L4 75796WE88 Port size SAE 1" SAE 1" SAE 2" M22 Э 1.5 SAE 1 1/2" 7/8-14UNF-28 M14 Э 1.5 6-10 B1 B2 Port Port name B1 Pressure port B2 Pressure port S1 Suction port S2 Suction port L1, L3 Case drain port L2, L4 Case drain port 7 X1, X2 Pilot pressure port