<strong>Yahoo Message Number: 72886</strong>Rich,<br/><br/>Take a strong flashlight and shine it on the left side of the engine in a plane with the engine valve cover. Slightly to the left of the valve cover all the way forward to the engine bulkhead is the other pump. I think you have a C-12 Cat, so it may be in a different location. You can also lay on your back under the coach. On the rear...