Before working on or fixing the valves, pull off the negative
Battery Cable, remove the engine cover and peel off the cylinder head. You should first write down or draw where each valve is before removing it; this will help avoid problems with engine damage after everything is put back together. With an appropriate instrument, attach the retaining fork to the threaded cylinder head and place the thrust piece at the top of the retainer, straight up. Using a valve spring compressor, first compress the valve spring so you can remove the valve collets, the top spring retainer and then the spring. After that, take out the valve stem seals and repeat everything for each valve. After pulling the cylinder head off the assembly board, preserve the order of the valves, springs and retainers just as they were taken out. You should not move the valves from their original positions when you install them so as to prevent damage to the engine. Test the components for any wear or damage and change them when needed. Reconstruct the valves by first placing them in their main positions, next setting the lower valve spring retainer, adding the valve stem seal and completing with both valve springs and their retainers. Repeat this process by compressing the valve spring and putting in valve keepers for every valve you have. When the valve assembly is put together, place the cylinder head on the engine block, fit the
Glow Plugs and connect the negative battery cable. Be very careful around the engine when it's on and do not approach the fan, touch any of the pulleys, belts or wear tight clothing close to them. Run the engine and check all fluid levels, take care to notice any problems in the fuel system and put on the cover when finished.