Figure 5-20.—Hose twist. Figure 5-22.—Hose clamp mounting. inspection light into one end and visually inspect from the opposite end using a small, angled, dental-type mirror. Inspect for any separation of covers or braids from inner tube, or from adjacent covers or braids. Look for flaring or fraying of braid. Look for blisters, bubbles, or bulging.    Inspect for corrosion. A hose that has carbon steel wire braid is subject to corrosion, which may be detected as brownish rust coloration penetrating the outer braid. Inspect end fittings for proper type and size, corrosion and cleanliness, nicks, scratches, or other damage to the finish that affects corrosion resistance. Look for damage to threaded areas, damage to cone-seat sealing surfaces damage to flange fittings, warping of flange, and for nicks or scratches on the sealing surface or gasket. Installation Procedures Remove the protective closures from hydraulic lines, hose, or hose assemblies. When possible, install hose or hose assemblies so that identification markings are visible. Install hose or hose assemblies without twisting, chafing, or overbending (fig. 5-20). Observe bend radius in table 5-8. Greater bend-radius is preferred where possible. Install hose or hose assemblies with a slight bow or slack to compensate for contraction pressure on the line (fig. 5-21). Figure 5-21.—Hose slack. When connecting hose or hose assemblies to an engine or an engine-mounted accessory, provide 1 1/2 inches of slack or a suitable bend between the last point of support and the engine or accessory attachment. Fingertighten swivel connector nuts to avoid stripping threaded areas of fittings. Before applying final torque to end fittings, make sure hose Table 5-9.—Swivel Nut Installation Torque (Inch-Pound) for Flared and Flareless Fittings HOSE STEEL ALUMINUM SIZE MIN MAX MIN MAX 2 75 85 20 30 3 95 105 25 35 4 135 145 50 65 5 170 190 70 90 6 215 245 110 130 8 430 470 230 260 10 620 680 330 360 12 855 945 460 500 16 1140 1260 640 700 20 1520 1680 800 900 24 1900 2100 800 900 32 2660 2940 1800 2000 NOTE: Torque values based on lubrication with fluid MIL-H-5606 or MIL-H-83282 prior to installation. 5-26