In what appears to be a cluttered workshop or garage, three men are gathered around a large diesel engine

In what appears to be a cluttered workshop or garage, three men are gathered around a large diesel engine. One man, wearing a green shirt, is actively working on the engine, seemingly using tools to make adjustments or repairs. The engine rests on a wooden frame and is supported by a stack of bricks. Another man, wearing a striped shirt, stands nearby, observing the work in progress. A third man, partially visible, is holding a large, round metal component, possibly an air filter or muffler. The floor of the workspace is dirty and stained, with tools scattered around. In the background, there's more evidence of mechanical work, including a red machine and additional engine parts. Other individuals are faintly visible in the background as well, further implying this is a working garage.