Power bulge and torque curve

Overview

When the tractor is under load, power bulge and torque rise work together to get through the tough spots without having to downshift.

As rpm drops, the only way to maintain or increase horsepower is to provide additional torque. Whether bailing wet hay or lifting a heavy load, the additional power allows the tractor to continue performing the job without stopping. The rated economy power take-off (EPTO) speed occurs near the peak torque rise providing power when operator need it in PTO applications.

Benefits

• Increased productivity in demanding conditions with more power when operator need it
• More lugging ability for quicker power recovery
• Additional torque provides force to remain horsepower as engine rpm drops below rated speed

Additional Details

Horsepower and torque are mathematically related.

5M 4-Cylinder tractors provide 4% power bulge while 5E 4-Cylinder tractors provide 2% power bulge. Note: There is no power bulge on 3-Cylinder tractors (5E 3-Cylinder or 5075M).

5E 4-Cylinder Power and Torque Curves

5E power curve summary

5E torque curve summary

5M Power and Torque Curves

5M power curve summary

5M torque curve summary

5075E doing loader work

Orange gear and range shift levers

Overview 

Ample speeds and ease of operation for demanding applications with the 12F/12R PowrReverser. This transmission comes standard with a dual speed 540/540 economy power take-off (E-PTO) is ideal for applications requiring frequent directional changes such as loader work.

Benefits

• Effortlessly switch directions with a small finger motion using the clutch-less electrohydraulic fingertip directional lever
  • Frees the right-hand to operate other tractor controls, such as the loader, rear implements, or throttle, as the directional lever allows the operator to steer and shift direction with the left-hand
  • The control is located on the left side of the steering column and selects forward, reverse, and neutral positions
• Ideal for rear blading and any applications that require frequent directional changes in tight spaces
• Lower engine vibration, reduced noise, less wear and tear on the engine, reduced fuel consumption, and increased operator comfort from the standard economy PTO (E-PTO)

Additional detail

Electrohydraulic reverser lever

NOTE: A neutral start switch requires the directional lever be in the neutral position to start the engine. 

12F/12R transmission includes:

• Hydraulic wet clutches (forward and reverse)
  • Maximize durability and outlast the life of any dry clutch
  • When tractors are run by multiple operators with a variety of experience levels, a wet clutch is the best way to maintain transmission integrity and performance while decreasing clutch replacement costs
• Platform-mounted shift levers (four gears, three ranges) 
  • Two platform-mounted levers offer easy and comfortable shifting for a pleasant operator experience
  • The gear-shift lever is easy to reach, and the less-used range lever is shorter. Unique knobs make it easy to distinguish between the two
• Left-hand reverser
• Constant-mesh helical-cut gears
  • Provide quieter operation and excellent reliability while the pressure-lubricated top shaft adds to the transmission durability
  • Fully enclosed, rigid shift linkages for short throw and crisp shifts enable all operators to clearly know in what range and gear they are operating
• Pressure-lubricated top shaft
• Positive park pawl: provides positive park and eliminates the need for a hand brake
• Neutral start switch

The forward lever selects one of four gears. The operator must depress the clutch while shifting. The rear lever selects one of three ranges: A, B, or C. 

The PowrReverser has a built-in engagement override valve for additional safety. This valve requires the clutch pedal to be depressed one time after each engine start before the transmission will begin to operate normally, giving the operator another opportunity to put all focus on the tractor. 

The speed of directional changes can be adjusted to the operator's preference or application demands with the field-installed infinitely-variable control kit. 
 
 
See the PTO functional area for more information on E-PTO. 

5090EL Tractor

Leveraging the proven 5E 4-cylinder platform, the 5090EL Tractor is suited to fit in confined spaces where clearance is a constraint. While this model is of special interest to poultry farmers, it has the power to tackle other jobs with various implements.

Special adjustments were made to accommodate low clearance applications. By lowering the rollover protective structure (ROPS) hinge point, operators will be able to reduce the overall tractor height, enabling them to stay below overhead obstacles. Adding to the possibility for low clearance, a factory-installed side exhaust is offered with the 5090EL Tractor. Lastly, updated tire options are available to suit the application. Regardless of tire selection, fenders can be adjusted to accommodate producer preference while optional additional fenders can be added to provide ample coverage to protect operators from mud and debris.

Gear shift lever with hi-lo buttons

Overview

Ample speeds and ease of operation for demanding applications with the 24F/12R PowrReverser, providing 24 forward speeds and 12 reverse speeds. This transmission comes standard with a dual speed 540/540 Economy power take-off (PTO), and it is ideal for applications requiring frequent directional changes, such as loader work and PTO work like rotary cutting and baling hay. 

Benefits

• Effortlessly switch directions with a small finger motion using the electrohydraulic fingertip directional lever
• Frees the right-hand to operate other tractor controls, such as the loader, rear implements, or throttle, as the directional lever allows the operator to steer and shift direction with the left-hand
• The control is located on the left side of the instrument console and selects forward, reverse, and neutral positions
• Ideal for rear blading and any applications that require frequent directional changes in tight spaces
• Clutch-less hydraulic shifting between forward and reverse
• Lower engine vibration, reduced noise, less wear and tear on the engine, reduced fuel consumption, and increased operator comfort from the standard economy PTO (E-PTO)

Additional details

The hi/lo selector buttons are located on the gear shift lever for each forward gear and are represented by a rabbit and a turtle, respectively.
 
The forward lever selects one of four gears.  All are synchronized for on-the-go shifting with the use of the clutch. The rear lever selects one of three ranges: A, B, or C. 

24F/12R transmission includes:

• Hydraulic wet clutches (forward and reverse) 
  • Maximize durability and outlast the life of any dry clutch
  • When tractors are run by multiple operators with a variety of experience levels, a wet clutch is the best way to maintain transmission integrity and performance while decreasing clutch replacement costs
• Platform-mounted shift levers (four gears, three ranges) 
  • Two platform-mounted levers offer easy and comfortable shifting for a pleasant operator experience
  • The gearshift lever is easy to reach, and the less-used range lever is shorter. Unique knobs make it easy to distinguish between the two
• Left-hand reverser
• Constant-mesh helical-cut gears
  • Provide quieter operation and excellent reliability while the pressure-lubricated top shaft adds to the transmission durability
  • Fully enclosed, rigid shift linkages for short throw and crisp shifts enable all operators to clearly know in what range and gear they are operating
• Pressure-lubricated top shaft
• Positive park pawl
• Neutral start switch

The PowrReverser has a built-in engagement override valve for additional safety. This valve requires the clutch pedal to be depressed one time after each engine start before the transmission will begin to operate normally, giving the operator another opportunity to put all focus on the tractor. 
 
A neutral start switch requires the directional lever be in the neutral position to start the engine. 

The speed of directional changes can be adjusted to the operator's preference or application demands with an optional field installed infinitely variable control kit. 

See the PTO functional area for more information on E-PTO.