BLOCK 6W8321 - Caterpillar

Double Action Hydraulic Attachment Circuit
Note: For the 1XS1-UP, 7JR1-UP, 2AS1-UP, 9WS1-UP, and 5MS1-UP, refer to Schematic, SENR9272, "Combined Flow Control, Two Pump Flow (Attachment)" for the hydraulic system schematic.Note: For the 2ES1-UP and 1ZS1-UP, refer to Schematic, SENR1912, "Combined Flow Control, Two Pump Flow (Attachment)" for the hydraulic system schematic.Note: For the 6DN1-UP, 8FN1-UP, 4DS1-UP, and 5BS1-UP, refer to Schematic, SENR9297, "Combined Flow Control, Two Pump Flow (Attachment)" for the hydraulic system schematic.Note: For the 3YR1-UP, 5LR1-UP, 4RS1-UP, and 5LS1-UP, refer to Schematic, SENR8947, "Combined Flow Control, Two Pump Flow (Attachment)" for the hydraulic system schematic.The two-way hydraulic flow system is for attachments that require two-way pressurized hydraulic flow. A hydraulic shear is a good example. The following components are the main components of the two-way hydraulic flow system:
Hydraulic control
Pilot oil lines
Front lines
Attachment relief valvesHydraulic Control
Illustration 1 g00295802
Components of the hydraulic control (1) Double switch (attachment tool). (2) Double switch (attachment tool). (3) Fourth pedal (option). (4) Right implement control lever. (5) Left implement control lever. To use the double action hydraulic attachment circuit, double switch (2) must be pressed. When double switch (2) is pressed to the left, pump oil is supplied to one side of the attachment. When double switch (2) is pressed to the right, main pump oil is supplied to the other side of the attachment. Double switch (1) is used to activate the medium pressure circuit. When double switch (1) is pressed to the left, the tool rotates counterclockwise. When double switch (1) is pressed to the right, the tool rotates clockwise.Push down on the front of