The cam housing will press against the locknut. The axle with skewer seen below has the cone and locknut back up to be flush with the axle end. The hub is shown with a large nut that acts as a spacer on the cam side of the quick-release lever. In Figure 4, there are two “tool” options. Almost all skewers use the common 5 x 0.8mm threading of the water bottle fittings. To attempt a repair, you will need a front skewer and front axle with locknut or cone. However, if the tubing hole is oversized, or if the nut is already fully expanded, there may be no successful repair that is easy performed. If the nut was not fully expanded during the original installation, it may be crimped further. Once the bolt is successfully removed, it is possible to simulate the installation tool used when these fittings are originally installed. If there are spacers between the cage and fitting, needle nose or other narrow pliers may in some cases be used to grab and hold the nut (Figure 3). Pull upward on the wrench while turning counter-clockwise. In some case, if the bolt is only marginally stuck, simply using the hex wrench to apply a side load will cause the nut to stick enough to free the bolt (Figure 2). It is first necessary to remove the bolt from the fitting. Allow this to cure for several hours and then attempt again to loosen the bolt. It is possible in some cases to drip in some wicking thread locker such as Loctite 290 or DT Swiss Spoke Freeze. If the fitting is loose in the frame it may simply spin, and the bolt will never loosen. This is often the most difficult part of the process. If the threaded insert has loosened, remove the bolt from the cage and remove the cage. This acts to expand (deform) the outside of the nut and clinches it tight in the frame tube. A tool is then threaded into the nut and the nut is pulled tight. The threaded insert is sized slightly smaller than the hole. With time and use these fitting can loosen in the frame tubing. The threaded insert or “rivet nut” is a fitting that is placed in a drilled tube, and then expanded to hold tight in the hole. Another design is uses a “threaded insert” (Figure 1). Astro Pneumatic 120pc Steel Rivet Nut Assortment - SAE RN120. Astro Pneumatic Professional Hand Rivet Nut Kit SAE & Metric with Rivet Nuts 1443B. By following these step-by-step instructions, you can safely and effectively remove push nuts and rivet nuts when needed. Remove any remaining debris or residue to ensure a clean surface for future installations or repairs. These fittings are sometimes welded directly to the tubing of some frames. Tools for installing and removing rivets, from hand riveters to pneumatic tools and all of the accessories and rivets you need. After removing the push nut or rivet nut, clean the area around the threaded shaft or stud. The water bottle frame fittings are used with bolts to hold the water bottle cage to the frame.
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