Improved pneumatic downforce system
Pneumatic downforce assembly

Pneumatic downforce assembly

Improved pneumatic downforce systems are available as a factory-installed option on all planters and as a field conversion bundle for all MaxEmerge™ 5, MaxEmerge XP, MaxEmerge Plus, and MaxEmerge 2 planters. All pneumatic downforce field conversion bundles contain upgraded components to reflect pneumatic system upgrades for model year 2011.
 
Row-unit downforce is infinitely variable from 0 kg to 181.4 kg (0 lb to 400 lb). A gauge and/or display provides a reading as to how much downforce the system is providing. The downforce is constant at all times during operation.
 
On all model year 2011 and newer 1775NT, 1775NT Central Commodity System (CCS™), 1795, and DB Series Planters, the pneumatic downforce adjustment is displayed within the GreenStar™ 2 Display as base equipment. However, when converting a model year 2010 and older 1770NT, 1770NT CCS, 1790, and DB Series Planter, the air compressor assembly and gauge need to be mounted within the tractor cab, similar to factory-installed pneumatic downforce equipment configurations for that model year.
 
Each row-unit has a single air bag located between the parallel arms. The air bag is hooked in parallel so air can be added or released from all rows at once from one location. Split-row planters have the corn row-units and soybean rows plumbed separately, so the pressure can be removed from the bean rows when planting corn.
 
MaxEmerge 2 row-units with long parallel arms must have the arms changed to current production parallel arms. This ensures the correct hole pattern for pneumatic downforce. Refer to the attachment description to order the appropriate bundle for the frame size.
 
NOTE: Row-units with long parallel arms require A54544 spacer block if not so equipped (Service Parts).
In-cab compressor assembly

In-cab compressor assembly

An air compressor, located either in the tractor cab or on the frame, pumps up the system. Integral planter models ordered with pneumatic downforce from the factory have in-cab mounting as base equipment. For drawn planter models, the air compressor assembly is mounted onto the planter frame for model year 2011. Prior to model year 2011, the 1775NT, 1775NT CCS, 1795, and DB Series Planters have the air compressor mounted within the tractor cab from the factory.
 
Valves located on the compressor allow bleed-off of the system. Interplant rows are shut off entirely when those rows are locked up.
 
Field conversion bundles have been established for upgrading pneumatic downforce systems. With the bundle structure, order the individual components for a pneumatic downforce system. There are individual bundles for the air compressor, the row-unit downforce assembly, and a hose kit.
 
Each planter requires one air-compressor bundle, a number of row-unit downforce assemblies equal to the number of rows on the planter, and a hose kit for each 12 rows being equipped with pneumatic downforce. There are four different row-unit downforce assembly attachments. The selection of the row-unit downforce assemblies is based on the type of meter drive (chain or Pro-Shaft™ drive) and type of parallel arms being utilized (regular or long) on the row-units.
 
CodeAttachmentDescription
 BA31836

Upgraded air-compressor assembly with check valve. This air-compressor assembly does not have an in-cab mounting bracket and includes an adapter harness for compressor power.

 BA31839

Pneumatic downforce hose (9.5-mm [3/8-in.] hose diameter) kit - 22.9 m (75 ft) of hose, order one for each 12 rows


NOTE: Requires 9.5-mm (3/8-in.) pneumatic hose fittings installed on pneumatic air bags.
 BA31840

Pneumatic downforce assembly for chain drive with regular parallel arms, one row


NOTE: Includes new pneumatic air bag assembly with 9.5-mm (3/8-in.) port.
NOTE: No longer available; order BA31842.
 BA31841

Pneumatic downforce assembly for chain drive with long parallel arms, one row


NOTE: Includes new pneumatic air bag assembly with 9.5-mm (3/8-in.) port.
NOTE: No longer available; order BA31843.
 BA31842

Pneumatic downforce assembly for Pro-Shaft drive with regular parallel arms, one row


NOTE: Includes new pneumatic air bag assembly with 9.5-mm (3/8-in.) port.
 BA31843

Pneumatic downforce assembly for Pro-Shaft drive with long parallel arms, one row


NOTE: Includes new pneumatic air bag assembly with 9.5-mm (3/8-in.) port.
 
Last Updated : 16-Sep-2021