Additionally, the air flow feeder house system was made available across all models. In 1998, an enhanced cleaning system was added to all John Deere 9000 Series Combines, along with a dual-display tachometer and full-body side shielding. Two new choppers were also made available, including one fine cut and one fine cut widespread.
When GreenStar was offered as an option for factory install in 1997, farmers had what they needed to increase productivity, efficiency, and profitability. Perforated cylinder filler plates and seat belts were also added to all machines. However, it was also during this year that the 9000 Series’ walker bearings lube interval was increased from 50 to 200 hours. Later, in 1995, hydraulic adjustable deck plates were made available for the 90 Series Corn Head, while rubber belted tracks were also initiated across all models.ġ996 was a meaningful year for John Deere, as the 4435 Combine was discontinued, marking its last model. A pressure fan was also added to the cab air system, and a grain curtain was also included in the design. In 1994, hoses were implemented to replace previously used steel lines from the hydrostatic pump to the motor.
The series’ feeder house pivoting was then improved and the HarvesTrak was made a standard feature in 1993.įrom 1994 to 1997, many design and technological features were added to the John Deere 9000 Series Combines to help farmers reach higher production and better collect data on the field. In 1992, New Generation Engines were introduced in the 95 models, while automatic speed control for corn heads and row crop heads were made available for all models. A breather was added to the Posi-Torque cylinder drive along with a new fuel tank and filler cap to progress sealing ability. After which, in 1991, all models were improved with increased cooling capacity and drive torque of the feeder house slip clutch. In 1990, the grain tank loading auger flighting of these machines was strengthened and the chaff spread was made available. 1990-1993 Model Changesĭuring this short span of time, the John Deere 9000 Series Combines’ horsepower increased dramatically across all models, with the 9400 increasing from 155 to 185 hp, and the 9600 increasing from 200 to 260 hp.
Let’s take a look at the complete transformation that took place from 1990 to 2005.
We thought it would be interesting to take a trip down memory lane, and explore the key model changes that were made to John Deere 9000 Series Combines that have led us to current combines on the market.
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