Pneumatic downforce provides convenient, simple adjustment of downforce for the whole planter from one location. The amount of downforce applied is infinitely adjustable from 0 kg to 181.4 kg (0 lb to 400 lb). Pneumatic downforce provides more consistent downforce throughout the range of row-unit travel than mechanical spring downforce systems.
 
Several pneumatic downforce system improvements have been implemented, including:

• 9.5-mm (3/8-in.) air delivery line instead of the 6.4-mm (1/4-in.) line used on model year 2010 and older planters.
• Air compressor assembly increased duty cycle. With this compressor, it provides a 47 percent increase in maximum air flow delivery compared to the prior air compressor.
• Pneumatic air bags with 9.5-mm (3/8-in.) air line inlets that have greater durability.

Such improvements to the pneumatic downforce system enable faster and more precise control of row-unit downforce while planting.

System features

Pneumatic downforce spring

Each row-unit has a single, rubber air bag located between the parallel arms. The air bags are hooked in parallel so that air can be added or released from all rows at once from one location.

Pneumatic downforce systems are available as base equipment on all 1700 Series and DB Planters. The individual pneumatic downforce air bag assemblies, air compressor units, and 9.5-mm (3/8-in.) delivery lines are also available as an attachment for field conversion.

Pneumatic downforce compressor and gauge

An improved compressor is used to charge the pneumatic system. This compressor can be located on the planter frame or in the tractor cab if desired. A gauge at the compressor indicates the amount of downforce being applied.

From the factory, integral planter models with pneumatic downforce will have an improved air compressor assembly with an in-cab mounting bracket, except the 1725 16Row and 1725 Central Commodity System (CCS™) Twin-Row Planters which will have the air compressor assembly mounted on the planter frame. For drawn planter models, the 1755, 1765, 1765NT, 1775 Front-Fold, and 1785 Drawn Planters will have the air compressor assembly installed either on the outer hitch or wing frame members when the pneumatic downforce system is installed.

Crop yields have increased through the years along with the amount of residue left in the field after harvest. At the same time, tillage practices have changed, including different tillage operations which maintain large amounts of surface residue, and even no-till practices. Row cleaners are an essential tool in managing this increased amount of residue.

John Deere seeding group offers a variety of row cleaner options to meet the needs of a producer’s operation. Compatibility varies by model, row spacing, and other planter equipment.

Screw-adjust, unit-mounted row cleaner

Screw-adjust, unit-mounted row cleaner

The screw-adjust, unit-mounted row cleaner is mounted directly to the face plate of the row-unit, placing the ground engaging components just in front of the row-unit opener blades and depth gauge wheels. This close proximity allows the gauge wheels to control the depth of the row cleaner as well as the row-unit. This compact design also allows greater compatibility with fertilizer openers and other planter attachments.

SharkTooth® wheels are standard equipment on the unit-mounted row cleaner. The swept-tooth design of the wheel provides a clear path for the row-unit openers while resisting residue buildup on the wheel. The screw adjustment knob is accessible through the top of the parallel arms, providing convenient access for adjustments. The row cleaner can be adjusted in 1.6-mm (1/16-in.) increments, providing plenty of flexibility to meet the needs of changing conditions.

Floating row cleaner with unit-mounted coulter

Floating row cleaner with unit-mounted coulter

The floating row cleaner allows a row cleaner to be used in conjunction with a unit-mounted coulter. This combination is often desired in heavy residue loads and reduced tillage planting conditions. The row cleaner provides a clear path for the row-unit, while the unit-mounted coulter helps penetrate tough soil conditions.

Accommodating the unit-mounted coulter means the residue wheels are farther forward from the row-unit face plate than in the case of the screw-adjust row cleaner. To maintain performance, this row cleaner has the capability to float above a defined minimum depth.

Standard depth-gauging bands on the wheels allow the row cleaner wheels to float independently of the row-unit openers, allowing both to perform in varying terrain. The unit may also be set in a fixed position by simply pinning through the bracket if desired. This row cleaner also features SharkTooth wheels as standard equipment.

The floating row cleaner and unit-mounted coulters are available on many planters as factory-installed equipment.

NOTE: Screw-adjust row cleaners are not compatible with MaxEmerge™ 5e row-units with long parallel arms.

NOTE: DB models have the option for either unit-mounted coulter, screw-adjust row cleaners, or pneumatic row cleaners (only compatible with MaxEmerge 5e or equipped ExactEmerge™ models). The DB60T is only available with a less row cleaner option.

SharkTooth is a trademark of Yetter Manufacturing, Inc.

Seed variable-rate drive provides the ultimate planting productivity by utilizing one, two, or three hydraulic motors (varies by model) to turn the seeding drive shaft. Hydraulic control of the seeding drive allows for on-the-go seeding rate changes right from the display mounted inside the tractor cab. Combine this seeding flexibility with the map-based planting option, and seeding rates adjust automatically based on the prescribed map. 

Variable-rate drive offers the following advantages over common, ground, or contact-tire drive systems: 

• Rate changes are almost instantaneous; no ramp up or ramp down of system as in some competitive systems
• Permits the producer to match seed population based on different soil types or irrigation practices
• John Deere design provides added operator safety by eliminating any possible drive creep found in some competitive variable-rate drive systems

1755 equipped with variable-rate drive

1765NT equipped with variable-rate drive

Single- or dual-motor systems for variable-rate drives are available for all John Deere planters except the 1785 Rigid Frame. Variable-rate drive is available as a factory-installed option for all applicable planter models.

Single- or dual-motor systems are available as field-installed attachments for most planter models; however, a three-motor variable-rate drive field-installed attachment is not available.

Seed variable-rate drive requires the SeedStar™ monitor and a radar input signal. Either tractor or planter radar may be used. Planter radar is ordered separately.

NOTE: Peanut seed meter disks require the variable-drive transmission.

The ground-engaging drive wheel system is a simple, proven, and reliable way to power the seed transmission(s). As the drive wheel turns, power is transmitted through a single-pitch drive chain to the jack shaft, on to the seed transmission, and out to the seed meters. Slip-clutch protected, spring-loaded idlers and steel sprockets provide a smooth-operating, dependable chain drive.

The ground-contact drive system has the following common features:  

• Single-pitch drive chain, spring-loaded idlers, and steel drive sprockets provide smooth-running, dependable chain drive
• 22.2-mm (0.88-in.) hex drill shaft and countershafts are used to ensure a smooth, consistent drive for the meter
• Bottom shield help protect chain from dirt clods, etc.

1705, 1715, and 1725 Planters

Ground-contact drive on an integral planter

1705, 1715, and 1725 Planters (except 1725 16Row30) are driven from one rear-mounted, ground-contact wheel.

1735 Planter drive

Front-mounted, ground-contact drive wheel

A 1735 Planter is driven by one front-mounted ground-contact wheel. 

1755 Planter drive

Ground-contact drive wheel on a 1755 Planter

Using ground-contact drive wheels much like the integral planters, the 1755 Drawn Planter utilizes two drive wheels.