Installation of Duo-Cone Floating Seals
1. Floating ring seals have highly finished surfaces and are held together by toric sealing rings. The flexibility of the toric sealing rings makes the floating ring seals self aligning and compensates for wear on the metal faces.
2. During disassembly, make sure the floating ring seals are kept together in matched sets. Always install the metal floating ring seals in pairs; that is, two new seals together or two seals that have previously run together. Never reinstall a used toric sealing ring.
3. Handle all parts with care to avoid nicking critical areas. File smooth any parts, other than the sealing faces, that have nicks that may make assembly difficult or questionable.
4. Wash off all dirt accumulation from used parts. It may be necessary to use a wire brush to clean the accumulations of dirt or rust from the bore of the seal retainers to assure they are clean and smooth.
5. Remove all oil or the protective coating from floating ring seals (2) and from retainers (4) with a nonflammable cleaning solvent and dry them.
6. Be sure the ramps on the retainers and on the floating ring seal are dry and with no oil present. Check the ramps for rough tool marks and nicks. On used parts, remove all dirt or rust deposits from the ramps with a scraper or wire brush, and smooth the surface with emery cloth.
7. Always install new rubber toric sealing rings (1) on floating ring seals (2). Never install a used toric sealing ring on a new or used floating ring seal.
8. Install toric sealing rings (1) on floating ring seals (2). Be sure the toric sealing ring is not twisted and that it is set straight and against the lip that keeps it from falling off the floating ring seal. See Figure A and Figure C.
Use caution when using Trichlorethane. Follow the manufacturer's recommendations on the container when using Trichlorethane.
9. Before installation of the Duo-Cone floating seals, wet the toric sealing ring in Trichlorethane so it will slip easily under the housing retainer lip. Do not use stanisol or any other liquid that leaves an oily film or does not evaporate quickly.
If an installer tool is not used, do not use a screwdriver or stick to assemble the toric sealing ring in the retainer. Use finger pressure only.
10. Install the Duo-Cone floating seal in retainer (4) until the toric sealing ring (3) is under the lip of the retainer. Make sure toric sealing ring does not twist when installed. This can cause floating seal ring (2) to cock. See Figure B.
11. After assembly, check dimension X (see Figure C) for places 90 degrees apart. Height variation around the assembled ring should not exceed 1.0 mm (.040 in). Use the Duo-Cone floating seal installation tool to make any adjustments. Do not push directly on the floating seal ring.
12. Before assembling floating ring seals together, wait at least two minutes to let all Trichlorethane evaporate.
13. Wipe the faces of the seals with a lint free tissue to remove any foreign material.
14. Put a thin film of clean oil on the seal faces. Be careful not to let any oil come in contact with the toric sealing ring or its mating surface.
15. Carefully bring the Duo-Cone seals together slowly and evenly.