ARM A.-ROCKER 2F1929 - Caterpillar

Illustration 6 g00940022
Negative flow control operation (grapple control valve in the GRAPPLE OPEN position) (1) Center bypass passage (2) Return line (3) Center bypass passage (4) Passage (5) Relief valve (negative flow control) (6) Relief valve (negative flow control) (7) Negative flow control orifice (8) Port (9) Negative flow control orifice (10) Passage (11) Return passage (12) Negative flow control line (13) Negative flow control line (14) Left pump (15) Right pump (16) Pilot pump (17) Pilot line (18) Proportional reducing valve (negative flow control) (25) Pilot oil manifold
Illustration 7 g00808213
Grapple control valve (GRAPPLE OPEN position) (3) Center bypass passageIllustration 6 shows the negative flow control operation at the main control valve when only the grapple control valve is in the GRAPPLE OPEN position.All of