TO 1-1-700 - Robins Air Force Base

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TO 1-1-700 of contamination). Maintenance personnel should refer to the applicable equipment system specific technical manual for lubrication requirements. 8.6.7 Packaging. Preventive maintenance techniques are rendered useless if these procedures are not followed. Materials used to package, handle, or store C-E-M equipment must be compatible with the equipment and environment. Guidance for packaging electronic equipment can be found in Chapter 5 of this manual. Table 8-8. Preservative Compounds for Electronic Equipment Description Characteristics Application Restriction MIL-PRF-81309, LUBRICANT, CORROSION PREVENTIVE COMPOUND 46 MIL-PRF-16173, COMPOUND, CORROSION PREVENTIVE 37 MIL-DTL-85054, COMPOUND, CORROSION PREVENTIVE 25 Corrosion preventive compound, water-displacing, ultra-thin film, avionics grade, MIL-PRF- 81309, Type II and III General preservative for internal areas of electronic equipment; internal areas of electrical connectors, receptacles, and solder joints. Contains water-displacing properties. Apply by spraying an even, thin film on the surface. Can be removed with cleaning solvent. Not intended for use on exterior surfaces of electronic equipment. Deposits a thin film which must be removed for proper function of contact points and other electromechanical devices where no slipping or wiping action is involved. Do not use around oxygen, oxygen fittings, or oxygen regulators, since fire or explosion may result. Corrosion preventive compound, solvent cutback, cold-application MIL-PRF-16173, Grade 4 General preservative for external surface exposed to elements and moisture, including: mounting racks, shelving, brackets, radar plumbing, shock mounts, rigid mounts, antenna hardware, general hardware, hinges, fasteners, ground straps; and exterior surfaces of electrical connectors, coaxial connectors, and receptacles. Apply by brush or spraying an even thin film on the surface. Material presents a semi-transparent film. Can be removed with cleaning solvent. Do not use on interior surfaces of electronic equipment, electrical connectors, coaxial connectors, or receptacles. Do not use around oxygen, oxygen fittings, or oxygen regulators, since fire or explosion may result. Must be applied over water-displacing corrosion preventive compound, MIL-PRF-81309, Type III, to accomplish a complete water-displacing and preservative on all areas exposed to elements and moisture. 8-32
TO 1-1-700 Table 8-8. Preservative Compounds for Electronic Equipment - Continued Description Characteristics Application Restriction Corrosion preventive compound MIL-DTL- 85054 (Non-ODS type) Temporary repair of paint damage to exterior surfaces such as cracks and scratches preservative for non-moving metal parts not requiring a lubricated surface. Apply by brush or spraying an even thin film to surface. Do not use on interior surfaces of electronic equipment, electrical connectors, coaxial connectors, or receptacles. Do not use around oxygen, oxygen fittings, or oxygen regulators, since fire or explosion may result. 8.7 CORROSION REMOVAL. This paragraph outlines the materials, equipment, and techniques involved in corrosion control. It is important that personnel analyze the problem and select the correct corrosion removal and preservation materials. In addition, each case should be followed up where possible to see if the corrosion has been arrested. It is also extremely important that personnel correctly identify the material substrate of each component in question. 8.7.1 Materials. Whenever corrosion is detected, corrective action is required. If the corrosion is within repair limits as established by equipment system specific technical manuals, corrective action shall be taken. This action shall consist of cleaning, corrosion removal and treatment, and preservation as required. In all cases, the mildest effective methods shall be used for cleaning and corrosion removal. The following methods are approved for use on C-E-M equipment: 8.7.1.1 Hand Rubbing/Abrasion. The nature of some surfaces such as chrome, nickel, gold and silver plated contacts, cadmium and tin plated connectors and accessories, limit the use of highly abrasive methods. Tarnish and light corrosion can be removed from such surfaces by rubbing with • an eraser; • A-A-3077 and/or A-A-2074 Brushes; • non-abrasive pad; • A-A-58054, Abrasive Mat; or • ANSI-B74.18, Abrasive Cloth. 8.7.1.2 Portable Mini-Abrasive Unit. The portable miniabrasive unit is a hand-held miniature abrasive tool used to remove light corrosion products from small electronic components. For example, printed circuit board (PCB) edge connector pins, small structural components. This abrasive unit should not be used on plated surfaces. 8.7.1.2.1 AWWA-B504, Monobasic Sodium Phosphate, is the specified abrasive material for use in the mini-abrasive unit. 8.7.1.2.2 The portable mini-abrasive unit shall be operated only in a blast cleaning cabinet. The monobasic sodium phosphate abrasive may contaminate other equipment and components if allowed to blow freely into the surrounding shop. 8.7.1.3 Hand-Held Abrasive Tool. This unit is used with a blast cleaning cabinet to remove corrosion products from electronic equipment structures and housings. 8.7.1.3.1 SAE-AMS-2431/6 Glass Beads are the required/ allowed abrasive material for use in the hand-held abrasive tool. 8.7.1.3.2 The hand-held abrasive tool shall be operated only in a blast cleaning cabinet. The glass beads may contaminate other equipment and components if allowed to blow freely into the surrounding shop. 8.7.1.4 Chemical Paint Removers. Paint removers specified in Chapter 2 of TO 1-1-8 shall be used to chemically remove paint and may be applied by brush. When used, care should be exercised in handling to avoid contact with the skin. The directions on the container and procedures in Chapter 2 of TO 1-1-8 shall be followed to ensure safe handling and best results. Whenever a chemical paint remover has been used, the surface should be thoroughly washed with fresh water and detergent prior to any paint application. 8.8 SURFACE TREATMENT. Proper surface treatment is essential to preventing corrosion from returning after it has been removed. 8.8.1 Chemical Conversion Coatings. Chemical conversion coatings are aqueous acid solutions of active inorganic compounds which combine with aluminum or magnesium surfaces to form a corrosion resistant film. In addition, they also improve the adhesion of paints or primers. Guidance regarding the use of chemical conversion coatings can be found in Chapter 7 of this manual. Change 2 8-33
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TO 1-1-700 TECHNICAL MANUAL CORROSI
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TO 1-1-700 TABLE OF CONTENTS Chapte
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TO 1-1-700 TABLE OF CONTENTS - CONT
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TO 1-1-700 LIST OF ILLUSTRATIONS -
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TO 1-1-700 FOREWORD 1. PURPOSE. The
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TO 1-1-700 List of Related Publicat
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TO 1-1-700 SAFETY SUMMARY 1. GENERA
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TO 1-1-700 AMS-G-6032, GREASE, PLUG
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TO 1-1-700 MIL-DTL-64159, COATING,
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TO 1-1-700 MIL-PRF-27617, GREASE, A
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TO 1-1-700 O-L-164, DRESSING, LEATH
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TO 1-1-700 MIL-T-81772, THINNER, PO
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TO 1-1-700 tronics equipment and th
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TO 1-1-700 cleaning situation, syst
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TO 1-1-700 c. Riveted joints shall
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TO 1-1-700 c. Remove and replace an
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TO 1-1-700 MIL-L-87177, LUBRICANT,
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TO 1-1-700 Figure 3-1. Simplified C
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TO 1-1-700 resistant, and also at t
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TO 1-1-700 is first noticeable as a
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TO 1-1-700 3.7.8 Oxygen Concentrati
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TO 1-1-700 Figure 3-14. Concentrati
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TO 1-1-700 Figure 3-17. Galvanic Se
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TO 1-1-700 Figure 3-20. Aluminum Su
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TO 1-1-700 3.8.7 CRES/Stainless Ste
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TO 1-1-700 3.9.10 Climate. Warm, mo
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TO 1-1-700 3.11 PREVENTATIVE MAINTE
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TO 1-1-700 CHAPTER 4 COMPOSITE AND
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TO 1-1-700 4.4.4.4 Glass parts shal
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TO 1-1-700 CHAPTER 5 PACKAGING (STO
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TO 1-1-700 extent of damage dependi
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TO 1-1-700 5.15 PRECAUTIONS FOR VCI
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TO 1-1-700 c. Secure the desiccant
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TO 1-1-700 Figure 5-8. Shock Isolat
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TO 1-1-700 Figure 5-9. Examples of
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TO 1-1-700 5.24.10 Rigid or Flexibl
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TO 1-1-700 CHAPTER 6 MOISTURE AND F
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TO 1-1-700 c. 6.2.6 Felt. Examine f
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TO 1-1-700 a. After first directing
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TO 1-1-700 6.4.5.14 Terminals, scre
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TO 1-1-700 NOTE • Authorized clea
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TO 1-1-700 Table 7-1. Cleaning of S
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TO 1-1-700 7.3.1.2.3 Portable, 45 g
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TO 1-1-700 Table 7-2. Common Milita
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TO 1-1-700 inactivity, storage, or
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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 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 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
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TO 1-1-700 (CRES), lead, ceramic, g
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TO 1-1-700 11.13.7.2 Treatment of C
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TO 1-1-700 MIL-A-46106, ADHESIVE/SE
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TO 1-1-700 Table 12-1. Sealing Comp
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TO 1-1-700 used to apply sealants i
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TO 1-1-700 Figure 12-2. Sealant App
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TO 1-1-700 Figure 12-4. Rivet Appli
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TO 1-1-700 Figure 12-6. Sealant Inj
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TO 1-1-700 below and adhere very po
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TO 1-1-700 Table 12-2. Time Require
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TO 1-1-700 Table 12-2. Time Require
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TO 1-1-700 of 20 to 25 seconds in a
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TO 1-1-700 d. Remove all uncured se
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TO 1-1-700 MIL-PRF-81733, SEALING A
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TO 1-1-700 MIL-PRF-81733, SEALING A
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TO 1-1-700 Figure 12-12. Typical Me
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TO 1-1-700 may be used for low temp
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TO 1-1-700 Figure 12-14. Sealing Pr
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TO 1-1-700 - Robins Air Force Base

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