Clamp installation

Figure 5-23.—Clamp installation. assemblies are properly aligned and free of twists and kinks. Complete tightening by using torque values specified in applicable MIM. Table 5-9 is a guide for installation torque of flared and flareless fittings. Hold fitting stationary with one wrench, and use torque wrench to tightens wivel nut. When applying final torque, hold hose manually to prevent rotation and scoring of the fitting’s sealing surface. Lockwire the swivel nut (if applicable). Support flexible hose or hose assemblies by routing and clamping hose or hose assembly securely to avoid abrasion and kinking where flexing occurs (fig. 5-22). Overtightening clamps will squeeze or deform hose. Cushion-type clamps should be used to prevent hose chafing. See figure 5-23. Make sure support clamps do not restrict hose travel or subject hose or hose assembly to tension, torsion, compression, or sheer-stress during flexing cycles. Where flexing is required in an installation, bend the hose in the same plane of movement to avoid twisting. Ensure that the minimum bend radius is greater by a factor of “N” than the minimum bend radius for a nonflexing hose for hose assemblies required to flex at a bend (fig. 5-24). Figure 5-24.—"N" factor for flexing bends. 5-27