BUSHING, SEAL GLAND 59000144 - Caterpillar

Illustration 1 g00881761
Pilot Manifold Valve (1) Line from the pilot hydraulic oil filter (2) Line to the automatic track tensioning system (3) Line to the pilot accumulator (4) Line to the boom control valve spool for the boom float position (5) Line to the swing parking brakes (6) Line to the bottom dump open spool (7) Line to the bucket bottom dump close spool (8) Line to the travel parking brake and load sensing signal relief valve (9) Pilot manifold valve (10) Line from the pressure reducing valve to the passage in the pilot manifold for return to tank (11) Pilot relief valve (high pressure circuit) (12) Line to the hydraulic activation control selector valve (13) Line from the pilot manifold to the pressure reducing valve (14) Line from the hydraulic activation control selector valve (15) Solenoid valve (boom float) (16) Solenoid valve (swing parking brake) (17) Solenoid valve (bucket bottom dump open spool) (18) Solenoid valve (bucket bottom dump close spool) (19) Line from the pilot resolver shuttle valve (20) Control valve (travel parking brake)(dual pressure) (21) Pressure reducing valve (low pressure) (22) Line to the hydraulic activation control valveThe pilot manifold valve is located in the upper left side of the cab support. In the pilot manifold valve, the pilot system oil is divided into the pilot system high pressure circuit and the pilot system low pressure circuit.Pilot system oil in the pilot system high pressure circuit supplies the automatic track tensioning circuit. This pilot system oil is regulated to a pressure of 7000 kPa (1015 psi).Pilot system oil in the pilot system low pressure circuit supplies the pilot control circuit. This pilot system oil is regulated to a pressure of 4500 kPa (650 psi).