Final answer:
Moving the differential shift lever into the locked position on the MB-4 tug improves traction and stability by locking the two wheels on the same axle together, allowing them to rotate at the same speed.
Step-by-step explanation:
Moving the differential shift lever into the locked position on the MB-4 tug causes the differential to lock the two wheels on the same axle together, allowing them to rotate at the same speed. This is useful when a vehicle needs maximum traction, such as when pulling heavy loads or traversing rough terrain.
For example, if one wheel of the MB-4 tug is on a slippery surface and the other is on a dry surface, the locked differential will distribute power evenly to both wheels, preventing the one on the slippery surface from spinning while the other wheel remains stationary.
In summary, locking the differential on the MB-4 tug helps improve traction and stability, ensuring both wheels on the same axle rotate together.