Under various operating conditions, agricultural tractors must adjust the wheel track of the driving wheels to ensure optimal performance and work quality.
First, let’s look at different job conditions and the appropriate wheel alignment for each:
1. **Transportation Operation**: When the tractor is being used for transportation, the drive wheel assembly should be set to its maximum track width to provide better stability and handling on roads.
2. **Rotary Tilling Operation**: For dry land tilling with rotary tillers, a narrower wheelbase is preferred, typically around 630mm, when using rubber tires. However, in paddy fields, the maximum track width should be used to prevent the wheels from colliding with the rotary cultivator during turns.
3. **Plowing Operation**: During plowing, the wheelbase should be adjusted according to the total width of the plowshare. A wider track is generally recommended for stability. However, to prevent soil leakage, the right drive wheel should be moved inward. To do this, remove the wheel hub, insert the drive wheel into the axle shaft based on the position of the larger wheel, and then install the hub according to the smaller track width.
4. **Other Operations**: In other tasks such as planting or spraying, the wheelbase should be adjusted based on the specific job requirements and crop row spacing.
Second, here’s how to adjust the track and what to watch out for:
Begin by loosening the four nuts that secure the drive wheels. Then, remove the drive wheel assembly. Loosen the two clamping bolts on the wheel hub and the set screws, and take off the hub. Place the hub at the desired position on the half-shaft according to the required wheel spacing, making sure it aligns with the positioning holes. The set screw head must match the counterbore on the axle. Ensure that the drive wheel, hub, and axle are securely connected.
Additionally, the left and right drive wheels can be swapped if needed to change the track width based on the operation. However, never install the tires in the opposite direction, as this can affect traction and safety. Finally, tighten all bolts to the specified torque values to ensure everything remains secure during use.
By following these guidelines, operators can optimize their tractor's performance across different farming tasks, improving efficiency and reducing wear on equipment.
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