GASKET KIT 5A5061 - Caterpillar

Introduction
Illustration 1 g03247000
Cab (22) AUX pedalThe single action hydraulic attachment circuit is for work tools that require one-way hydraulic flow. A hydraulic hammer is a good example.Operation
Illustration 2 g03246739
One-way hydraulic circuit for the work tool (1) Main control valve (2) Center bypass passage (3) Relief valve (4) Attachment control valve (5) Relief valve (6) Return passage (7) Line (one-way return) (8) Line for work tool (9) Line (return) (10) Pilot manifold (11) Line for work tool (12) Parallel feeder passage (13) Pilot line (14) Ball valve (15) Pilot line (16) Pilot control valve (AUX) (17) Pilot line (18) Line (19) Main pump (20) Hydraulic tank (21) Hydraulic lockout switchMain pump (19) supplies oil to pilot manifold (10). When the hydraulic activation lever is in the UNLOCKED position, pilot oil flows from pilot manifold (10) through pilot line (13) to pilot control valve (16) .When auxiliary pedal (22) is pressed, pilot oil flows from pilot control valve (16) through pilot line (15) to attachment control valve (4). The pilot oil shifts the spool in attachment control valve (4). Main pump (19) sends oil through line (18) to main control valve (1). The oil flows through parallel passage (12) and through attachment control valve (4). Main pump (19) oil flows to the two-way hydraulic attachment through line (11) .The return oil from the attachment flows through line (8), line (7), and to ball valve assembly (14). The return oil bypasses the slow return check valve and flows directly through the hydraulic oil cooler and into hydraulic tank (20) .Relief valve (3) controls the operating pressure.Ball Valve
Illustration 3 g03245888
Ball valve assembly (4) Attachment control valve (14) Ball valve assembly
Illustration 4 g03246576
Ball valve (14) Ball valve assembly (A) ONE-WAY flow (B) TWO-WAY flowBall valve assembly (14) controls the front lines for the one-way hydraulic circuit and the two-way hydraulic circuit. With the lever in ONE-WAY position (A), the one-way hydraulic circuit is operational. With the lever in TWO-WAY position (B), the two-way hydraulic circuit is operational.