COMPONENT OPERTATION / Control Valve FLOW COMBINER VALVE 1. During combined operation of front attachment and travel, the flow combiner valve control spool in signal control valve is shifted and pilot pressure shifts the spool in flow combiner valve. 2. When the spool in flow combiner valve is shifted, pressure oil from pump 1 flows to the spools in right and left travels. 3. Therefore, pressure oil from pump 1 is routed to both right travel and left travel spools. 4. Pressure oil from pump 2 is routed to the front attachment and swing. Consequently, during combined operation of travel, front attachment and swing, the machine can travel straight.
T450-03-03-035 T3-3-26 Pilot Pressure from Flow Combiner Valve Control Spool Spool Pressure Oil from Pump 1 To Left Travel Spool Sp Press Pump Sp ool ure Oil from 1 Press Pump ure Oil from 1