Wide axle, 234 cm to 307 cm (92 in. to 121 in.)

Narrow axle, 183 cm to 224 cm (72 in. to 88 in.)

Two axle widths are available to best fit a variety of cropping row widths.

The narrow width axle has a tread width from 183 cm to 224 cm (72 in. to 88 in.) and a clearance of 112 cm (44 in.). The wide axle has a tread width from 234 cm to 307 cm (92 in. to 121 in.) and a clearance of 127 cm (50 in.). Axle range for wide machines varies slightly depending on the option (hydraulic vs. manual tread adjust) that is being used.

NOTE: In order to achieve 229-cm (90-in.) tread spacing, IF320/80R42 tires must be used with AN401678 rims. Please see your local John Deere Dealer for more information.

With these tread spacings, the R4023 Sprayer holds an impressive 46-54 weight split when unfolded, fully loaded. This weight split helps to reduce compaction through the field and keeps the power to the ground.

The wide axle is ideal for the Midwest grain farmer. With the wide axle option, the operator can straddle three rows at 76.2-cm (30-in.), 81.3-cm (32-in.), 86.4-cm (34-in.), 91.4-cm (36-in.), 96.5-cm (38-in.), or 101.6-cm (40-in.) spacing or four rows at 76.2-cm (30-in.) spacing.

The narrow axle is ideal for the cotton or specialty crop farmer. With the narrow axle option, the operator can straddle two rows at 91.4-cm (36-in.), 96.5-cm (38-in.), or 101.6-cm (40-in.) row spacing.

Cast mount for connecting rods

The suspension design on the R4023 Sprayer uses a four-bar link system along with an air bag and shock combination to provide a comfortable ride.

Two large air springs sit atop each axle, similar to those used on over-the-road trucks and other John Deere sprayers. These air springs are dampened with oil-filled shocks to smooth the ride.

Connecting rods link the axle to the large cast mount that is bolted to the C-channel frame with a Huck® bolt. The axle-connecting rods are parallel for vertical motion and cross linked for lateral stability.

Air bag/shock suspension

The R4023 Sprayer's standard suspension provides for 152 mm (6 in.) of travel at the air bag. The air springs are underneath the frame; therefore, visibility of the rows passing underneath is free of suspension components.
 
The air springs are adjusted by adding or removing air through a standard air-stem valve on top of each spring or, if the sprayer is equipped with auto air-spring leveling, the air springs will inflate to the optimum level for the best-possible ride.

Auto air-spring leveling system adjusts for optimal field performance

Huck bolt outside frame

Huck bolt inside frame

The R4023 Sprayer's great ride begins with the frame. The frame construction allows the R4023 Sprayer to absorb rough field conditions that the operator may encounter. 

The frame consist of two strong parallel C-channels that are connected by suspension castings and reinforcement cross members. The cross members are connected to the frame using Huck bolts. Huck bolts combine the advantages of a high-strength bolt and rivet.

These fasteners provide greater vibration resistance and a joint that will never loosen compared to standard bolts. 

This style of frame and fastener is commonly used on over-the-road trucks and trailers.

Huck is a trademark of Alcoa Incorporated.

The R4023 now offers two factory installed shock solutions to accommodate various field conditions. For optimal comfort in rough or uneven terrain conditions such as no-till or stripped fields, a Soft Shock option is now available.

The Soft Shock will take the place of the adjustable shock dampener used on the 4630 and will be offered as a factory-installed option. This fixed shock provides 50 percent less dampening force which allows for a smooth ride up to 32.2 km/h (20-mph) spray speed in those uneven field conditions. The Soft Shock may also provide a more responsive feel for operators in turns or when starting/stopping quickly.

NOTE: The standard shock option is unchanged from previous models and is recommended for general use.

R4023 operator station

When operators first enter the model year 2018 R4023 cab, they will notice that there have been significant changes made. Key sprayer controls are more easily accessible to the operator on the redesigned CommandARM and the multifunction handle has a more ergonomic fit and feel.

The multifunction handle has six reconfigurable buttons, a scroll to select speed range, and allows operators to better manage their headlands with the Headland Management System (HMS™) button.

To finish out the upgrades, the GreenStar™ display has been upgraded to a faster, more user-friendly 4600 CommandCenter™ display, which allows operators to efficiently capture, manage, and transfer data.

Having the optimal weight distribution results in a lighter footprint leaving less compaction and less damage to the field, allowing the operator to get into the field earlier. 

The R4023 Sprayer was built with the optimal weight distribution. 

4.5L John Deere PowerTech PSS diesel engine

The R4023 Sprayer provides 129 kW (173 hp) with a 5 percent power bulge to 136 kW (182 hp) and 6071 kg/cu m (538 lb-ft) of peak torque to get through tough field conditions.

John Deere PowerTech PSS (two-valve) 4.5L engine features include:

• Four-cylinder, eight-valve head (two valves per cylinder)
• Cooled exhaust gas recirculation (EGR)
• Exhaust filters
• Selective catalytic reduction (SCR)
• Air-to-air charge air cooler (CAC), aftercooled
• High-pressure common rail (HPCR) fuel injection system
• Series turbocharger

In addition to reducing emissions and lowering engine idle noise, its compact size allows it to fit neatly under the hood for great visibility of the rows passing underneath the operator.

An increase in fuel tank size makes it possible to spray for up to 16 hours without refueling. By equipping the R4023 Sprayer with a 310-L (82-gal.) fuel tank, the operator will have plenty of fuel to spray for a full day.

Machines compatible with JDLink Connect

A. 9030 and 9R/RT Tractors
B. 8030 and 8R/RT Tractors
C. 7030 and 7R Tractors
D. 6030 and 6R Tractors
E. W200 Series Windrowers
F. 7760, CP690, and CS690 Cotton Pickers and Strippers
G. S, T, W Series Combines
H. 7050, 7080, and 8000 Series Self-Propelled Forage Harvesters
I. R4030, R4038, 4630, 4730, 4830, 4940 Sprayers

NOTE: Not all products or models are available in all regions. Refer to your local John Deere Dealer for product availability.

JDLink Connect is the premium telematics product offered by John Deere. The above key and pictures shows the list of machines compatible with JDLink Connect. JDLink Connect uses machine power and is designed to:

• Evaluate machine performance and efficiency to make informed, timely decisions
• Coordinate labor and machine logistics
• Stay connected using remote management tools
• View location history
• Use remote diagnostics
• Work in harsh agricultural conditions
• Support maintenance schedule and alerts
• Get the expert's opinion faster to keep an operation working

NOTE: JDLink Connect features are model dependent. Confirm with a John Deere dealer what specific features are available.

• View tractor selective control valve (SCV) and hitch settings remotely thanks to JDLink Connect
• Boost productivity by monitoring machine settings and detailed machine states on combines
• Increase productivity with awareness of detailed information for SPFHs enabled by JDLink Connect

Connect Mobile showing an actual rate map and monitoring the sprayer performance

Connect Mobile overview

John Deere Connect Mobile is a solution that utilizes an Apple® iPad® tablet in the cab that provides the operator a better understanding of the sprayer’s performance. Connect Mobile documents and displays several sprayer performance attributes, helping the operator monitor and more easily detect problems that can occur while spraying. Connect Mobile also has a common user interface that makes it easy to use between different pieces of John Deere equipment. Once the job is done, the iPad with the spraying data can be utilized to perform basic crop scouting activities in the field.

Spraying attributes

Monitor key performance indicators in map layers and dashboard tiles such as:

• Actual rate
• Rate deviation
• Pressure
• Ground speed
• Droplet size
• Target rate
• Flow rate
• Tank volume
• Productivity
• Fuel rate

In base equipment

Connect Mobile hardware is factory installed on all model year 2017 and newer R4030, R4038, and R4045 Sprayers, making it easy to get started with Connect Mobile.

Learn more about Connect Mobile in the Field and Crop Solutions section within the Precision Ag Technology product line and how it can improve the quality of a spraying job.

iPad and Apple are trademarks of Apple Inc.

Interchangeable inner booms

3-D boom structure

The R4023 Sprayer's booms are built with high-strength square tube. 

The boom incorporates a strong 3-D design. This design gives the boom more strength to resist fore-aft loading generated by starts, stops, and turns, as well as twisting loads caused by folding and unfolding operations.

The boom plumbing and nozzles are set between and up inside the two bottom square tubes of the boom structure. This protects the nozzle bodies from hitting objects that could damage the sprayer or affect the spray pattern.

The R4023 boom comes in an 18.3-m/24.4-m (60-ft/80-ft) or 18.29-m/27.44-m (60-ft/90-ft) configuration. Simply fold in the outer wing and go from spraying at 24.4 m/27.44 m to 18.3 m (80 ft/90 ft to 60 ft). When the outer wing is folded over top, it is supported by cradles to ensure it will remain in place and secure while spraying in the 18.3-m (60-ft) configuration in rough fields.

Increased boom sections provide the operator more precise application:

• 24.4-m (80-ft) boom-5 sections
• 27-m (90-ft) boom-7 sections

The breakaway ends of the boom offer the operator protection against damaging the boom if the boom unexpectedly hits an obstacle. The breakaway section of the boom uses a design that holds the breakaway from breaking backward while operating normally in the field, but when something is contacted, it will move rearward and out of the way to prevent major damage.

Each breakaway section resets using a spring, and then resets back to the spray position.

When the booms are folded in, the transport cradles on the machine support a large portion of the boom that, in turn, spreads out the stress.

While in transport position, the booms are cradled so that visibility is maximized to either side of the sprayer. By folding the booms flat, visibility is increased and the overall height of the machine is not affected.