52 - Replacing packing barrels in a D891

The packing barrels contain all of the seals that keep the compressed vapor in the cylinder head. I will show how I replace these barrels. I also replaced all eight(8) piston rings, all eight(8) ring expanders, all four(4) intake valves and all four(4) discharge valves. After running this unit for a couple hours I replaced the oil. This machine is now running smooth, quiet, and leak free.