3) WHEN THE RCV LEVER IS IN THE FLOAT POSITION Steering unit P port 3 Steering unit LS port SX P Pst T b1 b3 b2 4 B.D/F B.U CRAWD DUMP 1 3 4 2 P T 1.1 2.1 A1 7 P1 T Cut off valve P1 port Return line 24 X1 PS 1 18 Return line B1 E/G 17 L L1 S1 74096WE05 В When the RCV lever (4) is pushed further forward from the lower position, the pilot pressure reaches to 30bar, then the boom spool is moved to floating position. The work ports (A2), (B2) and the small chamber and the large chamber are connected to the return passage, so the boom will be lowered due to it's own weight.
In this condition, when the bucket is in contact with the ground, it can be move up and down in accordance with the shape of the ground. В В 6-7 8 LH A2 ( ) ) ( ( ) Floating Dump )( Down Rollback Up Floating Up Down