The Gleaner Manufacturing Company was established to manufacture the world’s first self-propelled combine harvesters. They were renowned for their products when they were members of the Allis Chalmers Manufacturing Company. The gleaners were silver in color, in contrast to the Allis Chalmers field tractors, distinguished by their brilliant orange paint. Gleaners were remarkable for being the first to use galvanized sheet metal in their construction. This article focuses on the Gleaner Combine R66.

An auger, which replaced canvas drapers, a rasp bar threshing cylinder, which replaced the traditional spike-tooth arrangement, and a down-front cylinder that brought threshing closer to the crop are just a few of the innovations pioneered by Gleaner. It was responsible for the invention of the rotary combine. It also pioneered the use of galvanized sheet metal and the trademark “GLEANER,” which have remained almost unaltered for more than three-quarters of a century.

Performance and Fuel Economy

There are two Tier III engines in the AGCO 84CTA family: a 300-horsepower version in the Gleaner Combine R66 and A66 and a 350-horsepower version in the larger R76 and A76. Engine: C13, 425 horsepower; max output: 459 horsepower. This engine powers the Model A86. As a result of this combination, fuel/air mixing for the Agco engine is improved. EEM3 electronic engine management software controls the Bosch common-rail fuel injection system, which gives a faster response and greater power per gallon of diesel fuel.


  • Height: 141 in
  • Length: 339 in
  • Width: 134 in
  • Curb weight: 27,600 lbs

Engine type: AGCO SISU POWER 84 CTA

Fuel Capacity / Gas Tank Size: 150 ga

Gleaner Combine R66

GLEANER COMBINE R66 Service Manual

Within the Gleaner R66 combine service manual components are covered in fine detail. Every repair conducted upon a Gleaner combine should occur in conjunction with a factory approve repair manual. The manual will cover information such as:

  • Engine
  • Fuel system
  • Electrical system
  • Transmission
  • Axles
  • Brake system
  • Diagnostic
  • Repair Procedures
  • Wiring

Gleaner combine manuals for service and repair are designed for technicians and dealerships to use. Every owner should have a service manual on hand while doing maintenance.

Design, Functionality, and Quality

Gleaner Combine R66 R Series combine harvesters with transverse rotors dependably, delivering a good crop. These alterations will aid in preserving and enhancing their standing as a leader in the field of innovation. As much as we’d want to keep pushing for the transverse rotor, we can only afford to make improvements to the already extremely productive and energy-efficient A6 Series. For the lowest maintenance costs in the industry, A6 Series combines use 52 percent lower belts and 62.5 percent lower chains than their rivals. This 360-degree intake of the Controlled Feeding and Threshing System (CFTS) overcomes the common problems associated with competing systems that use axial-rotor rotors.

The completely ISOBUS equipped cab has the ability to program and store up to 20 different crop settings. Consequently, a single button click on the cab’s control panel gives the operator full access to the machine’s crop-setting capabilities. Similarly, new cab roof stadium lights enhance visibility at nighttime. No only this, but new engine service lights and integrated grease banks, according to the manufacturer, allow for simple maintenance at any time of the day or night.

The AGCO Auto-Guide satellite-assisted steering technology allows for even greater productivity in all five variants. As a result, it is possible to gain up to ten inches with free WAAS correction signals. Local base RTK systems, on the other hand, may give an accuracy of 0.8 inches, making skips and fuel-wasting overlap nearly impossible in flight

GLEANER COMBINE R66 — Owner’s Manual

Gleaner R66 customers got an owner’s manual that offered detailed instructions on how to do routine maintenance and repairs. It is possible to do all of the vehicle’s functions by following the instructions in the owner’s manual.

  • Safety
  • Maintenance
  • Chassis
  • Engine
  • Drive
  • Transmission
  • Electrical

Although there are other operational ideas in the Gleaner Combine manuals to aid the driver in running the vehicle more easily, these are simply the most crucial to be aware of.

A Long-Term Investment

There are several reasons why purchasing a combine is a good investment. It enables you to take advantage of partial depreciation while also gaining access to newer technologies and improved performance. This brings us to the first thing to consider when purchasing a pre-owned combine: the worth of the machine. Natural flow feeding, a two-stage cleaning system, and a balanced centerline design have all been standard features on Gleaner combine for decades, and you can benefit from the specific performance benefits whether your combine is two or twenty years old.

Another benefit of having a solid and consistent platform is that it allows for more creative freedom. In the decades since the Gleaner transverse combine was created, hundreds of changes and enhancements have been introduced, many of which are still applicable to the earlier machines. This means that you may have some of the benefits that come with brand new combines installed on your pre-owned Gleaner while still saving money.