Technology: Machine Sync — how a combine “leads” a grain cart tractor during on-the-go unloading

Machine Sync is a John Deere feature that lets a combine and a tractor with a grain cart move in step: the tractor holds a set position beside the combine on its own, and grain is unloaded without stopping the harvest. Based on official John Deere materials, here is what it is and what you need to run it.

Key figures

• Unloading grain on the go
• Tractor holds its position
• Machines talk to each other
• Built on AutoTrac, StarFire
• Grain tank fill level shown
• Up to 8.3% higher output

What it is

John Deere Machine Sync enables synchronized movement between compatible combines and tractors. The combine is the leader; the tractor with the grain cart is the follower. The tractor holds a set position relative to the combine on its own, so unloading happens on the go, without stopping the header and separator.

How it works

It is built on the AutoTrac guidance system:

• The tractor with the grain cart is guided to a “home point” — a set in-line and lateral offset from the combine — and holds it throughout unloading.
• The offsets are maintained using information from StarFire receivers; the machines exchange information wirelessly through an MTG 4G LTE module on each machine. According to the operator’s manual, cellular communication is not used for this.
• The tractor driver sees the grain tank fill level of the combine and the unloading auger status.
• If the combine enters a sharp curve (more than 1° per meter) or changes direction, the tractor cannot follow and the system deactivates: a tone sounds and an alert explains why.

What you need to run it

According to the John Deere operator’s manual (2019 edition; check the equipment of a specific machine with the seller), both machines must have:

• A 4600 CommandCenter or 4640 Universal Display.
• A StarFire 3000 or StarFire 6000 receiver with Shared Signal; if both types are used, the StarFire 3000 must be on the combine.
• An MTG 4G LTE module and a Machine Sync activation.
• On the combine: an MTG 4G LTE supplemental antenna kit.
• On the tractor: tractor implement automation installed and activated.
• Both machines connected to the same wireless network, with software updated.

What it gives the farm

John Deere says the system takes some of the extra tasks off the operator during unloading so they can focus on the key ones, reduces collision risk and simplifies coordination. According to the company, productivity during on-the-go unloading rises by up to 8.3%. The grain cart driver sees the position and direction of the machines and the grain level, which helps plan trips. Many combines of the S7 and X9 series are equipped with such systems — check the equipment of the specific machine.

Source: John Deere, Machine Sync Advanced Automation