HOSE 5P1680 - Caterpillar

Main Hydraulic Schematic
Illustration 1 g02524196
(1) Wheel brake (rear axle) (2) Cylinders (dozer blade) (3) Solenoid valve (shut off for dozer cylinders - if equipped) (4) Travel motor (5) Cylinders (oscillating axle) (6) Steering cylinder (7) Wheel brake (front axle) (8) Cylinders (stabilizer) (9) Solenoid valve (shut off for stabilizer cylinders - if equipped) (10) Cylinder (offset boom - if equipped) (11) Check valves (offset boom - if equipped) (12) Cylinders (hydraulic cab riser - if equipped) (13) Swivel (14) Grapple rotate motor (if equipped) (15) Cylinders (bucket adjust - if equipped) (16) Solenoid valve (joystick steering activation - if equipped) (17) Cylinder (quick coupler - if equipped) (18) Solenoid valve (quick coupler control - if equipped) (19) Cylinder (VA boom - if equipped) (20) Control valve (VA Boom - if equipped) (21) Control valves (boom lowering - if equipped) (22) Boom cylinders (23) Shut off valves (single / double acting tool - if equipped) (24) Anti-drift valve (stick - if equipped) (25) Stick cylinder (26) Control valve (travel bypass) (27) Bucket cylinder (28) Diverter valve (bucket cylinder circuit) (29) Anti-drift valve (combined function - if equipped) (30) Control valve (medium pressure - if equipped) (31) Solenoid valve (smart boom control - if equipped) (32) Control valve (steering) (33) Main control valve (34) Main relief valve (35) Pilot control valve (dozer blade / stabilizers) (36) Pilot control valve (stick / swing) (37) Pilot control valve (VA boom - if equipped) (38) Pilot control valve (travel) (39) Pilot control valve (boom / bucket) (40) Damper hose (load signal to implement pump) (41) Oil cooler (42) Fan motor (43) Pressure tap (implement pump) (44) Pressure tap (load signal) (45) Pressure tap (fan pump) (46) Pilot manifold (47) Control valve (wheel brakes) (48) Control valve (brake circuit pressure) (49) Valve (manual cab riser lowering - if equipped) (50) Steering priority valve (51) Filter (gear pump) (52) Gear pump (53) Implement pump (54) Filter (swing circuit) (55) Filter (fan pump) (56) Swing motor (57) Implement pump - M322D (58) Hydraulic tank (59) Filter (implement pump / swing pump case drain) (60) Swing pump (61) Charge pump (swing circuit) (62) Fan pump (63) Breather cap (64) Return filter (65) Filter (travel motor / control valve case drain)Hydraulic Pumps
The hydraulic system uses four pumps to perform functions on the machine. The four pumps are:
Implement pump
Swing pump
Fan pump
Gear pump
Illustration 2 g02405676
Pump compartment (right side of machine) (53) Implement pump (60) Swing pump (62) Fan pump
Illustration 3 g02405679
Engine compartment (viewed from center of machine) (52) Gear pumpImplement pump (53), swing pump (60), and fan pump (62) are stacked together on the rear of the engine. The engine flywheel is coupled to the implement pump. Gear pump (52) is driven by an auxiliary drive gear at the front of the engine. The function of the four pumps is listed below.Implement Pump
Implement pump (53) is a variable displacement pump that uses a swashplate for output control. The implement pump provides oil flow through delivery line (80) to main control valve (30). The