John Deere Combines

56 John Deere Combines: Drivelines
Simply more efficient and easy to maintain.
Drivelines don’t get any simpler in design than this. In every John Deere combine, you’ll find an open,
uncluttered and very simple driveline system that delivers two outstanding advantages:
Peak efficiency. Our drivelines ensure a strong and reliable transmission of engine power to make the
most of your harvest productivity. Thanks to the massive main engine gearcase and rugged driveshaft
transmission, power flows smoothly from the transmission to the ground, year after year. All electrical
components are also designed and built for extra reliability.
Driven to perform at peak levels.
The main engine gearcase distributes engine power to fi ve different operations:
1. Separator gearcase drive
2. Hydrostatic ground drive
3. Main hydraulic/steering pump drive
4. Straw chopper drive
5. Grain tank unloading system drive
The separator gearcase is directly driven through the heavy-duty driveshaft and gearbox. The
wet-clutch components provide a reliable and smooth engagement of the separator. The simple
design also eliminates the need to de-clutch belts for separator drive and engagement. All you do
is fl ip a switch. The hydrostatic pump, charge pump, main hydraulic pump, and steering pump are
also driven directly from the engine gearcase.
The differential driveshaft is heat-treated and induction-hardened for extra strength and
durability. The high-capacity tapered roller bearings provide smooth performance and long life.
The driveshaft is sized to handle stress and high torque loads. All gear sets and components are
well-lubricated throughout the axle.
Simple maintenance. Simplicity of design also ensures excellent access on both sides of the combine,
greatly reducing service time. No belts to adjust or replace. The modular design of the cleaning fan,
separator and chopper drives provides easy accessibility and servicing when needed. The connectors are
colour-coded to enhance serviceability. Your diagnostic time is reduced, too, thanks to our on-board
diagnostics and self-diagnostic capabilities.
Strongest power reverser on the market lets you harvest without fear of
plugging. With 80 hp on all W-, T- and C-Series and 134 hp on the S-Series, the
feederhouse and reel reverser give you full drive power to dislodge the toughest
header and feederhouse plugs. All you do is fl ip a switch from the comfort of your
cab to engage a hydraulic cylinder to actuate the gearcase shift lever. It’s
convenient, it’s quick, it’s reliable and it helps you minimize downtime in the fi eld.
The John Deere Difference
• Main PTO gear case simplifi es the design resulting in proven reliability
• Simple layout of drives ensures easy maintenance
• Clean design approach to ensure easy access to belts & drives