Note: This procedure is only for Duo-Cone conventional seals. This procedure does not pertain to Duo-Cone floating seals.
It is extremely important to follow the correct procedure for installing Duo-Cone seals. Many seal failures are the direct result of mistakes during installation of the seal components.
Note: To aid in assembling the Duo-Cone seals, a 169-0503 Installation Kit (Duo-Cone Seal) is available. The installation kit contains wipes, seal cleaner, and seal lubricant.
- Remove any oily film, dust, or other foreign matter from all the seal components. Use isopropyl alcohol and a clean cloth that is free of lint to clean the components.
Note: All components should be dry prior to proceeding. Do not allow oil to contact toric ring (1), housing ramp (4), or seal ring ramp (7) before both seal rings (2) are assembled in Step 11.
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Illustration 3 g00578163 Show/hide table
Illustration 4 g00578169 - Position toric ring (1) on seal ring (2). Make sure that toric ring (1) is at the bottom of seal ring ramp (7) and against seal ring retaining lip (9).
Note: Make sure that toric ring (1) is straight on seal ring (2). There must not be a twist in toric ring (1). Handle toric ring (1) carefully. Nicks, cuts, and scratches can cause leaks.
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Illustration 5 g00578174 - Position installation tool (8) on seal ring (2) with toric ring (1).
- Lightly dampen the lower half of toric ring (1) with isopropyl alcohol. Techniques that can be used to dampen toric ring (1) include wiping with a clean cloth that is free of lint. Toric ring (1) can also be dipped into a container with towels or with a foam mat that is saturated with isopropyl alcohol.
Note: Do not use Stanisol or any other liquid that evaporates slowly. Do not use a liquid that leaves an oily film.
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Illustration 6 g00578229 - Make sure that the lower half of toric ring (1) is still wet. Use installation tool (8) to position seal ring (2) and toric ring (1) squarely against seal ring housing (5) and under housing retaining lip (3) of seal ring housing (5), as shown.
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Illustration 7 g00578232 - Measure dimension (A) from seal ring face (6) to the top surface of seal ring housing (5). Check dimension (A) in at least four places (90 degree intervals). The measurements must not differ by more than
1 mm (0.04 inch) .Note: If small adjustments are necessary, do not push seal ring (2) directly and do not pull seal ring (2) directly. Use installation tool (8).
- Toric ring (1) can twist if the toric ring is not completely wet during installation. Burrs on housing retaining lip (3) or on seal ring housing (5) can also cause a twist.
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NOTICE Misalignments, twists and bulges of the toric ring will cause Duo-Cone seal failures. If any of these occur, perform the assembly process over from the beginning.
- Toric ring (1) must never slip on housing ramp (4) or seal ring ramp (7). To prevent slippage, allow adequate time for evaporation to occur before you proceed with the assembly process. Toric ring (1) must roll only on seal ring ramps (7) and on housing ramps (4).
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Illustration 8 g00578262 - Use a clean cloth that is free of lint to wipe off seal ring faces (6).
Note: No particles of any kind can be left on the sealing surfaces. A small piece from a paper towel can cause a leak by keeping the sealing surfaces from contacting each other.
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Illustration 9 g00578265 - Apply a thin film of clean oil on seal ring faces (6) of seal ring (2). Use an applicator, a disposable tissue, or a clean finger to distribute the oil evenly. Ensure that no oil contacts the toric rings.
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Illustration 10 g00578269 Show/hide tableNOTICE Do not slam the seal rings together. High impact can scratch or break the seal components. When all of the seal components are properly aligned, secure all parts tightly.
- Make sure that both seal ring housings (5) are correctly aligned and concentric. Slowly move the seals toward each other.
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| Illustration 1 | g00578116 |
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(1) Toric ring
(2) Seal ring (3) Housing retaining lip (4) Housing ramp (5) Seal ring housing | |
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| Illustration 2 | g00578120 |
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(6) Seal ring face
(7) Seal ring ramp (8) Installation tool (9) Seal ring retaining lip | |
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Use caution when you are using isopropyl alcohol. Avoid prolonged skin contact with isopropyl alcohol. Vapors may be harmful if inhaled. Use only in a well ventilated area. Do not smoke while using isopropyl alcohol. Isopropyl alcohol is flammable. Do not use near an open flame or near welding operations. Keep isopropyl alcohol away from heated surfaces exceeding |
