Riken manufactures piston rings that operate as critical, functional parts in an internal combustion engine. Today Riken is helping its vehicle manufacturer customers develop environmentally friendly vehicles by providing a variety of piston rings that are designed and produced with advanced engineering and technology. We will continue to work closely with our engine customers and are committed to further advancements in ring design and manufacturing technologies to ensure that the right parts are available to serve the engines of the future.
Most of our ring sets come with three rings per piston. Likewise, the ring box separates and clearly marks the rings by which piston groove they belong to. So do not just dump the box out into a pile. Separate your piston rings into groups at your work station to ensure that you do not install your rings into the wrong groove.
The expander portion of the oil control rings should be the first piece that you install. It goes into the 3rd groove of the piston. Our expanders are designed so that they do not overlap and are very simple to install. Just spread them apart by hand and align it into the groove.
You never want to spiral the compression rings as they can distort and then not function properly. After installing the oil control ring, you will install the 2nd ring into the 2nd groove using a piston ring installation tool, making sure that the dot/top mark is facing towards the top of the piston. Spread the ring far enough apart to go over and not scratch the crown of the piston, but not too far to damage the ring.
After you install the 2nd ring, you can install the top ring into the first piston groove using the same technique. Many of our top rings are a square cut, allowing you to face either side towards the top. Check the rings and instructions for any indicators of direction as there are exceptions.
Now you have your rings loaded onto your pistons, you have one final step. Ensure that your end gaps are staggered and not all line up. This will prevent any leakage of oil or gases and ensure that your rings are working properly.