System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1Page 6-8 Rev. 66.4 NAV Antenna Cable DiplexerRemoval1. Disconnect the coaxial connectors from diplexer, taking note of which coaxial connectors areconnected to each port on the diplexer.2. Remove the mounting screws and diplexer.Reinstallation1. Reinstall the diplexer over the existing hole pattern and reinstall fasteners. Torque fasteners within22 to 25 in-lbs.2. Reconnect the coaxial connectors to the diplexer.Approved Hardware for Replacement:Stainless HardwareNote: Part numbers in parentheses are inactive or cancelled part numbers; these numbers may still beavailable and/or referenced on packaging material.Steel HardwareNote: Part numbers in parentheses are inactive or cancelled part numbers; these numbers may still beavailable and/or referenced on packaging material.Name Part NumberScrew, Pan Head, Stainless NASM51958, (MS51958), (AN520C)Washer, .032 thickness NAS1149C0332R, (AN960C-10L)Washer, .063 thickness NAS1149F0363P, (AN960C-10)Nut, Self-locking Metal, Hex, Thin NASM21043-3, NAS1291C3, (MS21043-3)Nut, Self-locking Metal, Hex NASM21046C3, MS20365C1032C, NAS1021C3,(MS21046C3), (AN363C1032)Nutplate, One Lug, Fixed MS21052, MS21054, MS21072Nutplate, One Lug, Floating MS21062Nutplate, Two Lug, Fixed MS21048, MS21050, MS21070Nutplate, Two Lug, Floating MS21060, MS21076Nutplate, Corner MS21056, MS21058, MS21074Nutplate, Side-by-side MS21087Name Part NumberScrew, Pan Head, Low Carbon Steel NASM35207, (MS35207), (AN520)Screw, Pan Head, Alloy Steel NAS603Washer, .032 thickness NAS1149F0332P, (AN960-10L)Washer, .063 thickness NAS1149F0363P, (AN960-10)Nut, Self-locking Metal, Hex, Thin NASM21042L3, NAS1291-3, (MS21042L3)Nut, Self-locking Metal, Hex NASM21045L3, (MS21045L3), (AN363-1032)Nutplate, One Lug, Fixed MS21051, MS21053, MS21071Nutplate, One Lug, Floating MS21061Nutplate, Two Lug, Fixed MS21047, MS21049, MS21069Nutplate, Two Lug, Floating MS21059, MS21075Nutplate, Corner MS21055, MS21057, MS21073Nutplate, Side-by-side MS21086
