Disassemble Mower Deck Drive System and Inspect Damage

What happens here

After feeding the cows, the farmer returns to the mower deck repair. He kneels beside the deck, which is placed on a 4x4 for stability, and uses a cardboard box as a knee pad. He points out a diagram on the deck cover that illustrates the belt routing for reassembly. He then begins to loosen the drive belt by manipulating the tensioner pulley. He removes the belt from two pulleys, revealing the broken main drive pulley and a damaged support bracket. He removes the broken pulley and its associated bolt using a DeWalt impact driver, inspecting the spindle to ensure it is undamaged. He notes that the broken pulley did not fail at a weld point but rather from metal fatigue.

Goal: Remove the drive belt and damaged pulleys, and assess the extent of the damage.