Which action is NOT recommended when working on steep slopes?

Raising the implement high while moving uphill is not recommended when working on steep slopes because it can significantly affect the center of gravity of the crawler tractor. A high implement increases the risk of tipping or rolling over as the vehicle's stability is compromised, especially on an incline. Maintaining a low center of gravity is crucial for safety and control, particularly in challenging terrain.

In contrast, maintaining a steady speed, using proper gear, and keeping a safe distance from the edge are all advised practices. These actions help maintain control of the tractor, reduce the likelihood of slipping, and ensure that the operator can react appropriately to any potential hazards on the slope.