ALTERNATOR 2409391 - Caterpillar

Illustration 1 g01459612
(1) Accumulator
(2) Implement lockout valve
(3) Passage from charge pump
(4) Charge filter bypass switch
(5) Charge filter
(6) Outlet to steering circuit and brake valve
(7) Pilot pressure for implement valves
(EE) Pneumatic pressure
(FF) Activated component
(GG) Tank pressure
(KK) Reduced pump pressure
(LL) Second pressure reduction
Illustration 2 g01400312
(8) Solenoid
(9) Passage to hydraulic tank
(10) Passage from charge pump
(11) Pilot pressure for implement valves Implement lockout valve (2) is located in the pilot manifold.Charge oil from the pump enters the valve through passage (10). The valve directs the charge oil to passage (11). Pilot supply now flows to each implement control valve.If the operator activates the implement lockout switch in the cab, solenoid (8) is de-energized. Implement lockout valve (2) closes. Charge oil is blocked and the implements cannot be operated. Pilot oil from the implement control valves returns to the hydraulic tank through passage (9).