a mechanic dad teaches his son how to change the timing belt and car cooling pump at home. child holds a pump in his hand.

engine coolants replacing cooling pump new part home replacement doityourself repair dad son teach children timing belt vehicle industry gear spare parts mechanical cogwheel closeup automobile motor automotive background coolant water system circulation overheating old macro breaking flow leak antifreeze leaked concept breakdown impeller cog service machine industrial transportation mechanic teaches his change car child holds hand maintenance according regulations parts home hand regulations