Chuggington Season 8 Episode 3 Braking Brewster/Old Puffer Pete's Firebox

Braking Brewster: Wilson and Brewster are sent to get stone from the mountain quarry. Brewster doesn't hear Dunbar warning them to be extra careful on the way back, as going downhill with a heavy load is harder. Old Puffer Pete's Firebox: Puffer Pete's firebox is completely worn out and he can't move without it. It's going to take ages to have a new one made. Until then, Pete is stuck and can't move by himself.