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| Illustration 1 | g00781121 |
Hydraulic Schematic for 416D (1) Stick Cylinder, (2) Extendable Stick Cylinder, (3) Pump, (4) Hydraulic Tank, (5) End Cover, (6) Back Pressure Valve, (7) Return Oil Filter, (8) Hydraulic Oil Cooler, (9) Metering Pump, (10) Steering Cylinder, (11) Backhoe Bucket Cylinder, (12) Extendable Stick Control Valve, (13) Right Stabilizer Cylinder, (14) Stick Control Valve, (15) Backhoe Bucket Control Valve, (16) Right Stabilizer Control Valve, (17) Priority Valve, (18) Lift Control Valve, (19) Tilt Control Valve, (20) Auxiliary Control Valve, (22) Left Stabilizer Cylinder, (23) Left Stabilizer Control Valve, (24) Swing Control Valve, (25) Loader Tilt Cylinder, (26) Swing Cylinders, (27) Boom Control Valve, (28) Auxiliary Control Valve, (29) Inlet Cover, (30) Boom Cylinder, (31) Lift Cylinders, (32) Joystick Control (Right Stabilizer), (33) Joystick Control (Left Stabilizer), (AA) System Pressure, (BB) First Pressure Reduction, (CC) Pilot Oil, (DD) Pilot Oil (First Reduction), (EE) Blocked Oil and (FF) Return Oil | |
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| Illustration 2 | g00751673 |
The location of components on the left side of the machine is for the 416D backhoe loader. (1) Stick cylinder, (4) Hydraulic tank, (7) Filter, (8) Cooler, (9) Metering pump, (11) Bucket cylinder, (13) Right stabilizer cylinder, (17) Priority valve, (18) Lift control valve, (19) Tilt control valve, (20) Auxiliary control valve, (21) Auxiliary cylinder, (25) Tilt cylinders, (26) Swing cylinders and (31) Lift Cylinders | |
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| Illustration 3 | g00781303 |
The location of components on the right side of the machine is for the 416D backhoe loader. (2) Extendable stick cylinder, (3) Pump, (10) Steering cylinder, (12) Extendable stick control valve, (14) Stick control valve, (15) Backhoe bucket control valve, (16) Right stabilizer control valve, (22) Left stabilizer cylinder, (23) Left stabilizer control valve, (24) Control valve for the swing cylinder, (26) Swing cylinder, (27) Boom control valve, (30) Boom cylinder, (34) Ride control valve and (35) Ride control accumulator | |
The hydraulic system provides oil for the steering and for the backhoe. The system also provides oil for the loader, for the ride control and for the operation of the stabilizers. The standard hydraulic system consists of hydraulic tank (4), variable displacement axial piston pump (3), return oil filter (7), oil cooler (8), bank valves for the backhoe control (14), (15), and (27), loader control valves (18) and (19), metering pump for the steering (9), and various associated cylinders.
The bank valve for the loader controls the hydraulic lift cylinder (31) and the hydraulic tilt cylinder (25) of the bucket. If equipped, the auxiliary cylinder (21) functions with auxiliary control valve (20). Loader tilt cylinder (25) and loader lift cylinder (31) are components of the loader circuit. If equipped, the ride control valve (34) and ride control accumulator (35) works with the loader lift circuit.
The backhoe control valve controls the backhoe, and the swing cylinders. The backhoe control valve also controls the stabilizer cylinders (13) and (22), stick cylinder (1), bucket cylinder (11), swing cylinders (26), and boom cylinder (30) .
If equipped, with an extendable stick, the backhoe circuit also includes cylinder (2) and control valve (12) .
The hydraulic system also provides oil for steering. The standard two-wheel steering system consists of metering pump (9) and steering cylinder (10) .
The hydraulic tank (4) is located in the rear of the engine compartment in front of the cab. Access to the hydraulic tank is gained by opening the hood.
The metering pump (9) is located in the front of the cab. The priority valve (17), and the loader lift control valve (18) are mounted on the right side frame under the cab. The loader tilt control valve (19), and the auxiliary control valve (20) are mounted on the right side frame under the cab. Access to the bank valves is from the bottom of the machine or by removing the floorplate.
The auxiliary cylinder (21), the tilt cylinders (25), and the lift cylinders (31) are located at the front of the machine. The auxiliary cylinder is mounted on the bucket, or near the bucket. The one tilt cylinder on a single tilt machine is located in front of the radiator. The tilt cylinder is centered in the loader frame. The lift cylinders are located on each side of the engine compartment near the center of the machine.
The stick cylinder (1), the bucket cylinder (11), right stabilizer cylinder (13), and swing cylinders (26) are located at the rear of the machine.
The hydraulic system is a load sensing, pressure compensated, closed centered system. The piston type pump for the hydraulic system is controlled by a load signal from the loader. The pump has a torque limiter, a pressure compensator, and a flow compensator that is mounted to the pump housing.
The pump is located in the middle of the machine, mounted to the transmission. Access is gained under the machine or by removing the floorplate in the cab.
The left stabilizer cylinder (22) and the right stabilizer cylinder (13) are located at the rear of the machine. The boom cylinder (30) is mounted to the backhoe. The left stabilizer cylinder and the right stabilizer cylinder are mounted on the rear frame.
The bank valves are located at the back of the machine. The stick control valve (14), and the bucket control valve (15) are part of the bank valves for the backhoe. The control valve for the right stabilizer (16), and the control valve for the left stabilizer (23) are part of the bank valves for the backhoe. The swing control valve (24), and the boom control valve (27) are part of the bank valves for the backhoe. Access is gained from the bottom of the machine or by removing covers.
If the machine is equipped with an extendable stick, extendable stick cylinder (2), and the control valve for the extendable stick (12) are also part of the hydraulic system. Cylinder (2) is located at the rear of the machine, mounted in the backhoe. Control valve (12) is installed in the bank valves for the backhoe and the valves are mounted at the rear of the machine.
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| Illustration 4 | g00751678 |
Hydraulic oil cooler location (8) Hydraulic oil cooler. | |
The hydraulic oil cooler (8) is mounted in front of the radiator at the front of the engine compartment. Access to the oil cooler is gained by opening the hood.
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| Illustration 5 | g00751680 |
Location of the control lever for the Loader (38) Control lever for the loader bucket, (39) Auxiliary control lever and (40) Switch for the transmission neutralizer | |
The operator must face forward and the seat must face forward while you move the machine or while you operate the loader. The loader controls are located on the right side of the operator station. The control lever for the loader bucket (38) controls the following positions of the bucket.
The control lever for the loader bucket (38) controls FLOAT, LOWER, RAISE, RETURN-TO-DIG, TILT BACK, and DUMP positions of the bucket.
This lever also has a switch (40) in order to neutralize the transmission.
If the machine is equipped with an auxiliary valve, the auxiliary control valve (39) controls that circuit.
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| Illustration 6 | g00751681 |
Location of the Backhoe control lever (41) Control for the Boom and swing, (42) Control for the Stick and bucket, (43) Control for the Extendable stick and (44) Control for the foot-operated auxiliary control (if equipped) | |
Different combinations of the levers and pedals are available. Refer to Operation and Maintenance Manual, SEBU7398.
The operator must rotate the seat in order to operate the backhoe. The operator faces the rear of the machine with the levers for the backhoe in sight.
Note: The left side of the machine and the right side of the machine are established by the view when you are operating the controls. Refer to Operation and Maintenance Manual, SEBU7398 for additional information.
The control for the boom (41) controls the BOOM RAISE, BOOM LOWER, SWING LEFT and SWING RIGHT. The control for the stick (42) controls the STICK IN, STICK OUT, BUCKET LOAD, and BUCKET DUMP.
The extendable stick control pedal (43) controls the STICK EXTEND. The extendable stick control pedal (43) controls the STICK RETRACT.
The auxiliary pedal (44) controls the pressurized lines of an attachment.
Note: There are different combinations of levers and pedals that are available. Refer to Operation and Maintenance Manual, SEBU7398.