Support clamps are used to secure the various lines to the airframe or powerplant assemblies. Several types of support clamps are used for this purpose. The rubber cushioned and plain are the most commonly used clamps. The rubber cushioned clamp is used to secure lines subject to vibration; the cushioning prevents chafing of the tubing. The plain clamp is used to secure lines in areas not subject to vibration.
 

A Teflon cushioned clamp is used in areas where the deteriorating effect of Skydrol 500, hydraulic fluid (MIL-O-5606), or fuel is expected. However, because it is less resilient, it does not provide as good a vibration damping effect as other cushion materials. Use bonded clamps to secure metal hydraulic, fuel, and oil lines in place. Unbonded clamps should be used only for securing wiring. Remove any paint or anodizing from the portion of the tube at the bonding clamp location. Make certain that clamps are of the correct size. Clamps or supporting clips smaller than the outside diameter of the hose may restrict the flow of fluid through the hose. All plumbing lines must be secured at specified intervals. The maximum distance between supports for rigid fluid tubing is shown in figure 5-24.

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