The high-performance package includes two elements:
With the swing in/out separator grate, finger rows six and seven quickly open/close from the left-hand side of the machine.
The high-performance cleaning shoe elements provide improved air flow resulting in an overall improved cleaning shoe performance in high-yielding or dry–brittle conditions where high chaff loads occur.
When ordering the high-performance cleaning shoe elements, the precleaner and chaffer come installed with redesigned louvers providing an improved and more stable air flow.
NOTE: The high-performance cleaning shoe elements are only available as remote adjustable version.
NOTE: When using the high-performance shoe elements, increase fan speed by 50–100 rpm compared to the standard shoe elements.
The large, 10-rasp bar threshing cylinder with 660-mm (26-in.) diameter provides excellent grain quality and gentle material handling.
Combined with the enlarged wrapping angle of 124 degrees, this ensures excellent threshing efficiency, providing unmatched capacity even in tough separating conditions.
Four rasp bars are in constant contact with the crop against the concave area for excellent threshing and separating efficiency:
The T-Series threshing system uses a smooth surface stripper roller behind the threshing cylinder to gently direct the material to the overshoot beater. This prevents material from back feeding on the threshing cylinder, eliminating blockages of the cylinder.
The stripper roller speed runs at 125 percent ratio of the threshing cylinder speed.
The enlarged 500-mm (19.7-in.) overshoot beater on the T-Series continues the material flow process. Material travels over the top of the beater and is directed into the separation drum.
Smooth crop flow is achieved without harsh angles or abrupt changes in direction.
The eight-wing beater has a constant speed. The serration design of the wings’ leading edges engage the mat of material and move the high volumes of tough, damp straw without buildup or bunching.
The 800-mm (31.5-in.) XTra Large separator drum provides additional separation capacity of the T-Series. Due to the open design, the drum is not heavier in weight than the previous closed design.
The Xtra Large separator drum runs at two factory-installed speeds:
There is an optional 270 rpm speed reduction kit available for corn harvest which is included in the corn package.
Swapping the belt speed can be done easily and quickly by changing the drive pulley via a lever-operated tension pulley.
The Xtra Large Separator drum runs at lower speed compared to the previous design that was operated at 900/450 rpm. While it seems that higher drum speeds result in more efficient separation capacity caused by the higher centrifugal force the opposite effect has been measured. While the centrifugal force has a vital impact on the separation capacity, speeds of the separator drum that are too high result in low exposure time in the high-performance separator grate. This is shown in the graph below.
The red line indicates the performance delta at a loss level of 1 percent between the different separator speeds.
In combination with the new high performance separator grate, which features a dual design – the first 3/4 of the grate are equipped with wire-grate design and the last quarter of the grate is equipped with a finger-rake design.
The dual design of the high-performance separator grate provides a boost in separation capacity and at the does not require manual adjustments that the previous finger rake grate did with the swing in/out function of the two finger rows in tough separating conditions.
The graph below shows the separation performance of two T670s equipped with a 630R platform running in the same field at same threshing settings. The machine with the high-performance grate clearly shows it additional separation capacity compared to the machine with the 800-mm (31.5-in.) XTra Large separator grate and an updated finger-rake design based separator grate.
The red line indicates the performance delta at a loss level of 1 percent between two different separator grate designs.
The high-performance separator grate is adjustable in two positions with a lever from the right-hand side of the machine.
The impact of the Xtra Large separator drum in combination with the new high-performance separator grate was also evaluated compared with the previous T-Series concept. Both the swath shape and straw mass in a dedicated amount of swath was measured. Both machines were operating with a 630R cutting platform in the same field side by side.
The model year 2016 design of the T-Series delivered a more voluminous shaped straw windrow – also the measured mass in the straw windrow was higher with the model year 2016 T-Series (~130 kg) compared to model year 2015 (~105 kg).
The 400-mm (15.7-in.) rear beater on the T-Series continues the material flow process. The beater delivers material to the straw walkers. The beater is driven directly from the Xtra Large separator drum and is operated at two speeds.
A separation grate is mounted underneath the rear beater. The grate is adjustable with a handle on the right hand side.
Two positions are available:
Inside the T-Series threshing and separation system is an eight-winged rear beater drum that separates the remaining grains out of the straw mat thanks to the rear beater grate which provides additional active separation area.
The T-Series has a seven-step straw walker concept. Compared to the previous T Series, the model year 2016 T-Series Straw Walker is extended by 80 mm (3.15 in.), which results in a slightly increased overall straw walker area (+ 0.1m²). The concept of low walker rpm and high walker stroke provides efficient tossing to fluff even largest straw mats and open channels for the free grains to drop through. This results in most efficient grain separation capability. The straw walker is available with welded or bolted universal and CCM grids for best-in-class reconfiguration and ability to retrofit for all crops and conditions.
The straw walker is equipped with a closed walker trough at the rear, which ensures that grain is captured in the trough and feed evenly on the walker return pan that is mounted below the front section of the walkers. Section dividers on the return pan help to maintain an even distribution of material onto the front chaffer of the cleaning system, even on slopes.
Different walker grids are available to match all crop and conditions.
Overall threshing and separation system benefits:
The HillMaster Combine is John Deere's answer to ensuring level-land performance on slopes up to 22 percent. Leveling the whole combine ensures operator comfort and top combine performance. The cleaning and separation system can work to maximum capacity. Efficiency is also maintained as the grain tank filling auger makes full use of the grain tank, which is also leveled.
HillMaster keeps the whole combine automatically and continuously leveled, providing the following benefits when harvesting on slopes:
To make road transport easier, the combine can be lowered into a transport configuration. This is done by lowering both sides of the combine at the same time. Two switches on the CommandTouch™ armrest console allow the operator to engage and disengage the automatic leveling mode or to override the automatic mode to make manual adjustments. The same controls are used to manually lift the combine into the work position or lower the combine into the transport position.
The HillMaster system provides 15 percent whole body slope compensation. This 15 percent compensation is complemented by Slope Master, which is available on all John Deere Combines. Slope Master collects material that has accumulated on the outer edges of the chaffer sieve and directs it through the return system, adding an additional 7 percent slope compensation. When HillMaster is operated in conjunction with Slope Master, level-land performance can be achieved on slopes up to 22 percent.
Regular final drives are bolted on a pivoting carrier plate. As the heavy-duty hydraulic cylinder rods extend or retract, the final drives and wheels move up and down in opposite directions, keeping the combine level.
The HillMaster feederhouse is standard on all HillMaster Combines. It provides lateral tilt range to match the tilt range of the combine.
The HillMaster pivoting front feederhouse plate provides a tilt capacity of +/- 9 degrees:
The extra-fine-cut straw chopper features eight rows of dual knives and one row of counter knives. In total, 88 (5-Walker) or 108 (6-Walker) rotating knives deliver superior chopping quality and excellent distribution of chopped material in the field up to a cutting width of 9.1 m (30 ft).
Serrated knives provide excellent quality of cut and improved splicing of the straw compared to smooth knives. Better straw splicing results in faster rotting process, which is especially important for minimum tillage operation.
Counter knives can be pivoted to change the aggressiveness and length of cut.
The extra-fine-cut straw chopper includes one row of counter knives – 57 knives (5-Walker) or 68 (6-Walker).
The counter knives can be swung in without any tools, via a lever according to quality of chop requirement. In small grain, they are usually swung in three-quarters; for canola and corn, they should be completely swung out.
A splicer bar can be swung in with a lever in tough chopping conditions (for example, green straw) when chopping quality even with fully swung in counter knives is not sufficient.
When the splicer bar is engaged, there is a step in the chopper housing, resulting in improved chopping quality. When the splicer bar is disengaged, the chopper floor is a smooth surface, leading to lower fuel consumption.
The tailboard angle can be adjusted with a lever on the left side of the chopper and is adjustable in multiple positions to match the spreading width of all platforms.
The windrow deflector plate is operated via a single lever on the right side for easy and fast changeover from windrowing to chopping mode.
The straw chopper housing is bolted to the rear straw hood and remains in one position for road transportation and field operation. A single lever operates the windrow deflector plate, guiding the straw into the chopper or down on the ground.
Straw choppers are directly driven from the main engine gearcase and are automatically engaged with the separator drive. A heavy-duty power belt reliably transmits drive power to the chopper. A reliable clutch is used for engaging and disengaging the chopper rotor.
Easy and fast changeover from chopping to windrowing, and vice versa, can be done with a single lever.
The CommandARM armrest provides access to most frequently used combine controls:
The CommandARM armrest provides the operator with unmatched control of the combine and front-end equipment. Controls are designed and positioned to enhance operator ergonomics and are easy to locate and use. Operators will appreciate the common look and feel of these control consoles in the combines, which are similar to the design used in John Deere tractors.
Adjustment of the CommandARM armrest allows the operator to set a height that best fits his personal preference. The CommandARM armrest moves on an angle, fore and aft and up and down, for precise operator comfort.
The push-button shift transmission (PBST) is an electric three-speed transmission. The PBST provides operators a quick, simple, and easy way to shift gears on the combine, by simply pressing three buttons to shift between gears. The PBST includes an electromechanical park brake that is engaged using a simple push button located on the CommandTouch™ armrest console.
The electromechanical park brake functions similarly to the ProDrive™ park brake. When the hydro handle is moved to the neutral gate, the park brake is automatically engaged to prevent unintended movement and can be locked in this mode with the touch of the park brake button on the CommandTouch armrest console.
An alarm in the CommandTouch display alerts the operator when the park brake is engaged, if it has not been released prior to hydro handle movement. When the combine engine is turned off, the park brake is automatically applied.
Forward visibility is unsurpassed with the combine cab. A large, wide-angle front windshield provides an unobstructed view from side to side and top to bottom. The cab posts are significantly narrow and the overall cab size has increased by 30 percent compared to previous cab.
Visibility to the left and right of the combine is excellent because of the shaped left and right windows. Visibility when unloading has also been enhanced with the additional glass area in the left-hand door. Narrower cab cornerposts with a recently redesigned digital corner post display gives close to a
180-degree visibility scan for the operator to watch front-end equipment, unloading operations, and road transport situations. The display placement on the right-hand corner post, the swivel of the CommandARM™ display, and the option to flip up a third display allow clear visibility of the platform and road during transport.
The rear window provides best-in-class visibility path to the grain tank and sample.
Black line = model year 2011 engine curve (with separator on)
Yellow line = model year 2012 engine curve (with separator on)
Green line = unloading (with separator on)
The isochronous engine governor keeps engine speed constant until rated engine power is exceeded. Due to the constant engine speed driven components remain at constant speed too, which enhances the combine overall capacity as well as efficiency. This is gained by preventing over blowing of shoe in low load conditions such as starting a filed, down crop conditions when leaving, entering a path, that can either end in higher shoe losses or in dirty grain tank samples.
Main benefits of the isochronous engine governor include:
The cleaning shoe speed is directly proportional to the engine speed. The cleaning shoe performs best as it approaches its maximum operating speed. With non-isochronous engines, the shoe speed was calibrated to limit the maximum shoe speed proportionally to the maximum engine speed with no load. This left the shoe speed subject to falling below the optimal cleaning speed in tougher, heavier load conditions. The isochronous governor manages and maintains the engine speed throughout the array of crop conditions, leading to a more consistent, better-performing cleaning system.
The isochronous governor electronically activates only when the separator or unloading auger is engaged. Normal engine operation (higher idle) will be present when the machine does not have the separator or unloading auger engaged.
Previously, engines without isochronous governors would decrease the crankshaft speed when load was applied to the engine. Operators could hear when this happened, which gave them an understanding of the amount of power the engine was being required to output. Since the isochronous governor maintains a constant crankshaft speed independently of the engine load, a display is created to aid in the operator's understanding of the power output by the engine.
A power meter in the cab gives the operator a visual reference of how much power is being used, similar to how changes in engine speed are displayed. The display features a bar graph, which shows the operator how much engine power is being used at any time.
As long as the combine is operated in the green range, it is running below rated power at constant rpms when reaching the yellow area it exceeds rated power engine rpm starts to drop. When reaching the red area, the operator is informed that the machine is close to reaching maximum power, so the operator should pay attention to the throughput of the machine.
*Maximum engine power