MH3059 Material Handler Hydraulic System Caterpillar

General Information (Machine System)

Usage:

The implement systems and travel system use a load sensing system that controls the operation of the implements and travel motors. Two main piston pumps are mounted to the pump drive and provide the high-pressure oil for the systems. The swing pump is a closed loop hydraulic system that uses a piston pump that is mounted the rear of the right main pump. The swing pump provides oil for operation of the swing motor. The machines hydraulic system is controlled by The IQAN monitor, multiple ECMs, and various operator controls.

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Illustration 1	g03389276
Top view of machine (1) Joysticks (2) IQAN monitor (3) Operator controls (4) Stabilizer cylinders (5) Steering cylinders (6) Stick cylinders (7) Boom cylinders (8) Parking brake valve (release) (9) Upper ECM panel (10) Lower main control valve (11) Flow diverter valves (optimal turning) (12) Hydraulic oil cooling pump (13) Solenoid valve manifold (lower hydraulic shutoff) (14) Solenoid valve manifold (variable pitch fan) (15) Right main pump (16) Swing pump (17) Hydraulic oil cooling motor (18) Generator pump (19) Rear back pressure manifold (20) Left main pump (21) Solenoid valve manifold (swing) (22) Swing charge filter (23) Case drain filter (swing pump) (24) Main pump case drain filter (25) Generator motor (26) Solenoid valve manifold (generator) (27) Lower case drain filter (28) Front back pressure manifold (29) Generator (30) Generator control panel (31) Hydraulic oil tank (32) Travel motor (33) Wheel brake (34) Oscillating cylinders (35) Return filters (36) Upper main control valve (37) Expansion tank (swing brake) (38) Cab riser cylinders (for and aft) (39) Solenoid valve manifold (automatic lubrication) (40) Lower ECM panel (41) Swing motor (42) Swing drive (43) Swivel (44) Expansion tank (gear oil) (swing drive) (45) Cab riser cylinders (up and down) (46) Manual lowering valve (cab)

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Illustration 2	g03389277
Right side view of machine (1) Joysticks (2) IQAN monitor (4) Stabilizer cylinders (5) Steering cylinders (6) Stick cylinders (7) Boom cylinders (8) Parking brake valve (release) (9) Upper ECM panel (10) Lower main control valve (11) Flow diverter valves (optimal turning) (12) Hydraulic oil cooling pump (13) Solenoid valve manifold (lower hydraulic shutoff) (14) Solenoid valve manifold (variable pitch fan) (15) Right main pump (16) Swing pump (17) Hydraulic oil cooling motor (18) Generator pump (19) Rear back pressure manifold (25) Generator motor (26) Solenoid valve manifold (generator) (29) Generator (31) Hydraulic oil tank (33) Wheel brake (34) Oscillating cylinders (36) Upper main control valve (37) Expansion tank (swing brake) (38) Cab riser cylinders (for and aft) (39) Solenoid valve manifold (automatic lubrication) (40) Lower ECM panel (41) Swing motor (42) Swing drive (43) Swivel (45) Cab riser cylinders (up and down) (46) Manual lowering valve (cab) (47) Travel pedal (48) Solenoid valve manifold (hydraulic lockout) (49) Hydraulic lockout lever