BI001467
Hydraulic system _________________________________________________ Major hydraulic components (Reference Fig. 29) conveyor motor
The conveyor motor is located on the left hand side of the machine, and is mounted directly to the conveyor reducer. This radial piston motor receives hydraulic fluid from the main valve bank’s first and second sections.
piggyback gear pump
The piggyback gear pump is bolted to the rear of the open loop load sense pump. This pump supplies hydraulic fluid to the main pump and the conveyor motor for cooling purposes.
open loop load sense pump
The open loop load sense pump is a part of the breaker power unit and is located on the right side of the machine. It supplies hydraulic fluid to all hydraulic functions on the machine.
pressure filter
primary valve bank
tram motors
The pressure filter is located on the left hand side of the machine near the operator’s station. This filter is used to filter fluid on the pressure side of the hydraulic circuit. The primary valve bank, located on the left hand side of the machine directly above the crawler, is used to control the machine’s conveyor, tilt, lift, tram, and power fill functions. All sections of the valve bank are spring return (self centering) except for the power fill section which is detented. The tram motors are located to the inside of each crawler assembly and are used to supply torque to the torque hubs for tramming operations. Each tram motor is individually controlled by separate sections of the primary valve bank.
system pressure gauge
The system pressure gauge is located at the primary operator’s station on the left side of the machine. This single gauge will display the system pressure for the active function.
hydraulic oil tank with sight glass and thermometer
The hydraulic oil tank is located on the left hand side of the machine and has a 110 gallon capacity. The hydraulic oil temperature and level is monitored by the PLC via a temperature probe and float switch. The tank is equipped with a sight glass and thermometer.
frame tilt cylinders
The frame tilt hydraulic cylinders are located at the end of the crawler under the hopper on each side of the machine and are used to adjust the discharge height of the machine. The cylinders are controlled by one section of the primary valve bank. WARNING! The tilt and lift hydraulic cylinders have counterbalance cartridges which serve as load holding valves. Do not replace these cylinders with different style cylinders or the machine may fall. The machine could be damaged or you or other personnel could be seriously injured or killed by the falling machine.
________________________________________________________________ FB140 (7MFBHM-48DD) Feeder Breaker 5.40
