There are often signs that a pump is on its way out but unless you know what you are looking for the signs can be easily missed. Knowing when your pump is nearing the end of its life can help with ordering parts or a new one and planning for downtime.   1.Know the Hours   All machinery wears out with time and pumps are designed to work for a set number of hours before they need replacing. Find out how long you can expect the pump to be operational then work out how many hours your equipment has completed.   2. Listen for the Sounds   Pumps in good working order will hum along relatively quietly. One of the first symptoms of a pump working under pressure is a whine or howling sound. When you are using a piece of machinery day in day out, it can be difficult to tell so take the time to listen to the pump before starting work.     3. Not Starting   Another sign that your pump is in trouble is when it no longer starts the first time. If it takes a few turns to get going in the morning...