TO 1-1-700 - Robins Air Force Base

More documents

Recommendations

Info

TO 1-1-700 cleaning situation, system-specific manuals, or equipment SPD involved according to methods and procedures in Chapter 7 of this manual. b. Clean electrical contacts per procedures in Chapter 8 of this manual. c. Clean electrical parts such as resistors, fixed or variable capacitors, coils, and switches with an appropriate nonmetallic, soft bristle brush or a lint-free cloth only per procedures in Chapter 8 of this manual. d. Clean ventilation screens and filters with an appropriate vacuum cleaner to remove any accumulated dust or debris that would impede the free flow of air. Use of compressed air can create airborne particles that can enter the eyes and/or penetrate the skin and cause serious injury. Air pressure for compressed air cleaning shall be maintained at 30 PSIG or lower at the nozzle. Use of proper eye and hand protection is mandatory during compressed air cleaning operations. Control of nozzle direction to direct the air stream away from equipment interiors, other equipment and other personnel in the area is also required. Compressed air with entrained moisture or oils can cause corrosion of and/or interfere with the electrical properties of equipment. Use only compressed air from a source with an oil/water separator installed and preferably, with an additional air dryer also. To be on the safe side, always direct the first air blast at the floor to clear any possible condensed moisture from the compressed air line before using it for cleaning. e. Compressed air may be used to clean away dirt, dust, and other debris from equipment mounting areas in vans and shelters, the exterior and interior of removed equipment cases and covers, an open equipment chassis. Compressed air shall not be used to clean speaker cones, the interior of electrical meters, plates of tuning capacitors, relay contacts, plates of selenium rectifiers, transistors, and distributor wiring in high or ultra-high frequency RF amplifiers or oscillator circuits. Use a hand bellows or rubber bulb to direct air onto these components for cleaning. f. Lubricate all components/parts requiring lubrication according to the applicable equipment system specific technical manual (Air Force or commercial) and/or lubrication charts after cleaning operations. Parts not usually covered by lubrication requirements such as door mechanisms, hinges, latches, locks, and exposed gears and bearings shall also be lubricated at this time with an appropriate water displacing lubricant listed in Chapter 7 of this manual to prevent corrosion, squeaking, and binding. 2.2.3 Soldering. Soldering can be the source of many corrosion problems in electronics equipment if the process is not proper and/or the wrong materials are used. The process consists of pre-cleaning areas to remove contaminants, tinning of areas, applying flux or using a flux cored solder, heating to flow the solder, and post cleaning to remove flux residue. Unless otherwise directed in a system specific technical manual, use only the materials listed in this manual for soldering operations. Solder shall be a non-activated/non-corrosive rosin or rosin/alcohol flux cored solder conforming to ANSI-J-STD- 006 and listed in the most current qualified products list (QPL) for this specification. Use the following techniques to provide good, corrosion free soldered electrical connections in ground C-E-M equipment: 2-2
TO 1-1-700 v c. Tin all areas of all components to be soldered properly with the appropriate solder for the type of solder connection being made. TT-I-735, ALCOHOL, ISOPROPYL 65 TT-N-95, NAPHTHA, ALIPHATIC 66 • Soldering can generate toxic fumes and sometimes pop solder particles into the air. Avoid breathing the fumes, and provide adequate ventilation. Eye protection is required. • Use of compressed air can create airborne particles that can enter the eyes and/or penetrate the skin and cause serious injury. Air pressure for compressed air cleaning shall be maintained at 30 PSIG or lower at the nozzle. Use of proper eye and hand protection is mandatory during compressed air cleaning operations. Control of nozzle direction to direct the air stream away from equipment interiors, other equipment, and other personnel in the area is also required. Do not use acid or acid salt type fluxes in soldering electrical connections as this can cause corrosion problems at these connections as well as elsewhere within electronic equipment. Acid or acid salt type fluxes can be used only for tinning and soldering of mechanical joints not associated with electrical connections; and then, only if completely neutralized and removed immediately after the soldering operation. a. Clean areas to be soldered with a lint-free cloth wet with TT-I-735, Isopropyl Alcohol, or TT-N-95, Aliphatic Naphtha, to remove any contaminants; and wipe the areas dry with a clean, lint-free cloth. b. Use SN60WRP solder for general electrical and electronic connections, SN62WRP solder for silver plated connections, and SN63WRP solder for printed wiring boards and other applications where temperature limitations are critical. d. Position and hold fixed all components to be soldered in a joint so that after assembly the mechanical strength of the joint is not dependant on the solder. Apply the appropriate amount of heat for the type of solder being used and flow the solder to make the solder joint. e. Inspect the soldered joint to ensure that a good, neat electrical connection that feathers out to a thin edge indicating proper solder flow and wetting is made. Ensure that no sharp points, rough areas, overheated or underheated areas, crystallized areas that are indicative of a cold solder joint or rosin joint is present. TT-I-735, ALCOHOL, ISOPROPYL 65 TT-N-95, NAPHTHA, ALIPHATIC 66 f. Clean the solder joint to remove all rosin flux residue with a lint-free cloth wet with TT-I-735 isopropyl alcohol or TT-N-95 Aliphatic Naphtha; and dry the area either by wiping with a clean, lint-free cloth or by directing a blast of compressed air onto the joint. 2.2.4 Riveting. Consult TO 1-1A-8 for assistance with the determination of the type of rivet to be used for a specific application and for proper techniques of rivet installation. MIL-PRF-81733, SEALING AND COATING COMPOUND, CORROSION INHIBITIVE 48 a. When riveting structural joints, rivets shall be installed with the structure faying surfaces and rivet shanks wet with a MIL-PRF-81733 corrosion inhibiting sealant. Consult Chapter 12 of this manual to determine the proper type, class, and grade to be used as well as the proper mixing and application techniques. b. Rivet heads shall be properly seated and flush against the surfaces of the parts being riveted. 2-3
Page 1 and 2: TO 1-1-700 TECHNICAL MANUAL CORROSI
Page 3 and 4: TO 1-1-700 TABLE OF CONTENTS Chapte
Page 5 and 6: TO 1-1-700 TABLE OF CONTENTS - CONT
Page 13 and 14: TO 1-1-700 LIST OF ILLUSTRATIONS -
Page 15 and 16: TO 1-1-700 FOREWORD 1. PURPOSE. The
Page 17 and 18: TO 1-1-700 List of Related Publicat
Page 19 and 20: TO 1-1-700 SAFETY SUMMARY 1. GENERA
Page 21 and 22: TO 1-1-700 AMS-G-6032, GREASE, PLUG
Page 23 and 24: TO 1-1-700 MIL-DTL-64159, COATING,
Page 25 and 26: TO 1-1-700 MIL-PRF-27617, GREASE, A
Page 27 and 28: TO 1-1-700 O-L-164, DRESSING, LEATH
Page 29: TO 1-1-700 MIL-T-81772, THINNER, PO
Page 32 and 33: TO 1-1-700 tronics equipment and th
Page 36 and 37: TO 1-1-700 c. Riveted joints shall
Page 38 and 39: TO 1-1-700 c. Remove and replace an
Page 40 and 41: TO 1-1-700 MIL-L-87177, LUBRICANT,
Page 42 and 43: TO 1-1-700 Figure 3-1. Simplified C
Page 44 and 45: TO 1-1-700 resistant, and also at t
Page 46 and 47: TO 1-1-700 is first noticeable as a
Page 48 and 49: TO 1-1-700 3.7.8 Oxygen Concentrati
Page 50 and 51: TO 1-1-700 Figure 3-14. Concentrati
Page 52 and 53: TO 1-1-700 Figure 3-17. Galvanic Se
Page 54 and 55: TO 1-1-700 Figure 3-20. Aluminum Su
Page 56 and 57: TO 1-1-700 3.8.7 CRES/Stainless Ste
Page 58 and 59: TO 1-1-700 3.9.10 Climate. Warm, mo
Page 60 and 61: TO 1-1-700 3.11 PREVENTATIVE MAINTE
Page 63 and 64: TO 1-1-700 CHAPTER 4 COMPOSITE AND
Page 65 and 66: TO 1-1-700 4.4.4.4 Glass parts shal
Page 67 and 68: TO 1-1-700 CHAPTER 5 PACKAGING (STO
Page 69 and 70: TO 1-1-700 extent of damage dependi
Page 71 and 72: TO 1-1-700 5.15 PRECAUTIONS FOR VCI
Page 73 and 74: TO 1-1-700 c. Secure the desiccant
Page 75 and 76: TO 1-1-700 Figure 5-8. Shock Isolat
Page 77 and 78: TO 1-1-700 Figure 5-9. Examples of
Page 79 and 80: TO 1-1-700 5.24.10 Rigid or Flexibl
Page 81 and 82: TO 1-1-700 CHAPTER 6 MOISTURE AND F
Page 83 and 84: TO 1-1-700 c. 6.2.6 Felt. Examine f
Page 85 and 86:
TO 1-1-700 a. After first directing
Page 87:
TO 1-1-700 6.4.5.14 Terminals, scre
Page 90 and 91:
TO 1-1-700 NOTE • Authorized clea
Page 92 and 93:
TO 1-1-700 Table 7-1. Cleaning of S
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
TO 1-1-700 7.3.1.2.3 Portable, 45 g
Page 104 and 105:
TO 1-1-700 Table 7-2. Common Milita
Page 106 and 107:
TO 1-1-700 inactivity, storage, or
Page 108 and 109:
TO 1-1-700 7.5.6.5.1 Grade 1 - A th
Page 110 and 111:
TO 1-1-700 Table 7-4. Corrosion Pre
Page 112 and 113:
TO 1-1-700 Table 7-5. Preservation
Page 114 and 115:
TO 1-1-700 either case, MIL-PRF-269
Page 116 and 117:
TO 1-1-700 MIL-PRF-85285, COATING,
Page 118 and 119:
TO 1-1-700 c. Cadmium plated surfac
Page 120 and 121:
TO 1-1-700 a. Scuff sand and feathe
Page 122 and 123:
TO 1-1-700 7.7.7.2 If surface is no
Page 124 and 125:
TO 1-1-700 7.7.9.2 Where only parti
Page 126 and 127:
TO 1-1-700 7.8.1 Type I Application
Page 128 and 129:
TO 1-1-700 Extend (Loctite) 32150 J
Page 130 and 131:
TO 1-1-700 There are three ways to
Page 132 and 133:
TO 1-1-700 vulnerable surfaces clea
Page 134 and 135:
TO 1-1-700 Table 8-2. Materials, Th
Page 136 and 137:
TO 1-1-700 Table 8-4. Electronic Cl
Page 138 and 139:
Page 140 and 141:
Page 142 and 143:
Page 144 and 145:
Page 146 and 147:
Page 148 and 149:
Page 150 and 151:
TO 1-1-700 Table 8-5. Accessories o
Page 152 and 153:
TO 1-1-700 Table 8-5. Accessories o
Page 154 and 155:
TO 1-1-700 f. Devices with permanen
Page 156 and 157:
TO 1-1-700 Table 8-7. Cleaning and
Page 158 and 159:
TO 1-1-700 MIL-PRF-87937, CLEANING
Page 160 and 161:
TO 1-1-700 of contamination). Maint
Page 162 and 163:
TO 1-1-700 8.8.2 Protective Coating
Page 164 and 165:
TO 1-1-700 • Tube clamps. • Min
Page 166 and 167:
TO 1-1-700 a. For bonding/grounding
Page 168 and 169:
TO 1-1-700 vertently destroy the mo
Page 170 and 171:
TO 1-1-700 doors, and other corrosi
Page 173 and 174:
TO 1-1-700 CHAPTER 10 CORROSION PRO
Page 175 and 176:
TO 1-1-700 MIL-PRF-81733, SEALING A
Page 177 and 178:
TO 1-1-700 d. After corrosion is re
Page 179 and 180:
TO 1-1-700 (3) Stainless/CRES steel
Page 181 and 182:
TO 1-1-700 10.9 WATER ENTRAPMENT AR
Page 183 and 184:
TO 1-1-700 f. Shield equipment from
Page 185 and 186:
TO 1-1-700 b. Use e-inch rivnuts of
Page 187 and 188:
TO 1-1-700 10.17.3 If the plating s
Page 189:
TO 1-1-700 Figure 10-16. Dissipatio
Page 192 and 193:
TO 1-1-700 (2) If allowable damage
Page 194 and 195:
TO 1-1-700 Table 11-1. Recommended
Page 196 and 197:
TO 1-1-700 11.6 3M CO. SCOTCH-BRITE
Page 198 and 199:
TO 1-1-700 11.11.2 Control of Mecha
Page 200 and 201:
TO 1-1-700 11.12.2 Mechanical Damag
Page 202 and 203:
TO 1-1-700 MIL-DTL-81706 (ALODINE),
Page 204 and 205:
TO 1-1-700 11.13.2.3 Application of
Page 206 and 207:
TO 1-1-700 only when there is no da
Page 208 and 209:
TO 1-1-700 NOTE SEMCO PASA-JELL 101
Page 210 and 211:
TO 1-1-700 (CRES), lead, ceramic, g
Page 212 and 213:
TO 1-1-700 11.13.7.2 Treatment of C
Page 214 and 215:
TO 1-1-700 MIL-A-46106, ADHESIVE/SE
Page 216 and 217:
TO 1-1-700 Table 12-1. Sealing Comp
Page 218 and 219:
Page 220 and 221:
Page 222 and 223:
Page 224 and 225:
TO 1-1-700 used to apply sealants i
Page 226 and 227:
TO 1-1-700 Figure 12-2. Sealant App
Page 228 and 229:
TO 1-1-700 Figure 12-4. Rivet Appli
Page 230 and 231:
TO 1-1-700 Figure 12-6. Sealant Inj
Page 232 and 233:
TO 1-1-700 below and adhere very po
Page 234 and 235:
TO 1-1-700 Table 12-2. Time Require
Page 236 and 237:
TO 1-1-700 Table 12-2. Time Require
Page 238 and 239:
TO 1-1-700 of 20 to 25 seconds in a
Page 240 and 241:
TO 1-1-700 d. Remove all uncured se
Page 242 and 243:
Page 244 and 245:
Page 246 and 247:
TO 1-1-700 Figure 12-12. Typical Me
Page 248 and 249:
TO 1-1-700 may be used for low temp
Page 250 and 251:
TO 1-1-700 Figure 12-14. Sealing Pr
show all

TO 1-1-700 - Robins Air Force Base

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?