PISTON-CLUTCH 1602390 - Caterpillar

All Implements In HOLD
The schematic shows all of the implement control valves in the HOLD position.
Illustration 1 g01186094
Type 1All implements in HOLD position (1) Return pilot oil from stabilizer circuit (2) Return oil from stabilizer circuit (3) Load signal from stabilizer circuit (4) Pressure reducing valve (pilot) (5) Pilot shutoff valve (6) Supply oil to stabilizer circuit (7) Pilot oil to stabilizer circuit (8) Return oil from brake circuit (9) Supply oil to braking circuit (10) Boom cylinder (11) Load control valve (boom cylinder) (12) Compensating cylinders (13) Control valve (boom raise) (14) Load Control valves (15) Control valve (coupler tilt) (16) Quick disconnects (auxiliary services) (17) Line relief valve (18) Control valve (auxiliary) (19) Main control valve (Implement) (20) Control valve (boom extend) (21) 100 micron filter (22) Proportional pilot reducing valve (23) Telescoping cylinder (24) Flow Control Valve (Drain) (25) Load control valve (telescoping cylinder) (26) Manual pump for lowering (27) Inlet Section (28) Priority valve (29) Supply to steering (30) Pump supply (Steering priority signal) (31) Pump supply (32) Load signal to pump (33) Relief valve (load signal) (34) Return to tank (35) Boom dampening system
Illustration 2 g01182684
Type 2All implements in HOLD position (1) Return pilot oil from stabilizer circuit (2) Return oil from stabilizer circuit (3) Load signal from stabilizer circuit (4) Pressure reducing valve (pilot) (5) Pilot shutoff valve (6) Supply oil to stabilizer circuit (7) Pilot oil to stabilizer circuit (8) Return oil from brake circuit (9) Supply oil to braking circuit (10) Boom cylinder (11) Load control valve (boom cylinder) (12) Compensating cylinders (13) Control valve (boom raise) (14) Load Control valves (15) Control valve (coupler tilt) (16) Quick disconnects (auxiliary services) (17) Line relief valve (18) Control valve (auxiliary) (19) Main control valve (Implement) (20) Control valve (boom extend) (21) 100 micron filter (22) Proportional pilot reducing valve (23) Telescoping cylinder (24) Flow Control Valve (Drain) (25) Load control valve (telescoping cylinder) (26) Manual pump for lowering (27) Inlet Section (28) Priority valve (29) Supply to steering (30) Pump supply (Steering priority signal) (31) Pump supply (32) Load signal to pump (33) Relief valve (load signal) (34) Return to tank (35) Boom dampening systemThe illustration shows the standard implement valve that is used in all the B - SeriesTelehandlers.The centering spring that centers the spool is located on the right side of the valve. In HOLD, the centering spring will center the spool in the valve body. The valve may feature a combination of the line relief valve and of the makeup valve.Part of the control valves are equipped with a manual lowering screw. As an example, this screw is used to assist in lowering the boom when the engine is not running. Load check valves prevent implement drift whenever the supply pressure is less than the load pressure or the work port pressure.The pressure compensator maintains a controlled pressure differential across the spool in order to control flow to the circuit. If more than one