TO 1-1-700 - Robins Air Force Base

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TO 1-1-700 11.13.2.3 Application of Organic Coatings. Reapply the organic coating system specified in the appropriate system specific maintenance manual and/or engineering drawing for the piece of equipment and TO 35-1-3 for support equipment (SE) using TO 1-1-8 for application procedures. NOTE Apply the paint within 48 hours after application of the pretreatment coating. Reapply the pretreatment coating in accordance with Section II of Chapter 5 in TO 1-1-691 if more than 48 hours have elapsed since application of the pretreatment coating. 11.13.3 Ferrous Metal (Steel) Alloys Other Than Stainless Steels (CRES). These paragraphs outline chemical corrosion removal procedures for treating ferrous metal alloy parts and equipment assemblies. Use of chemical corrosion removers on steels is recommended only for areas where there is no danger of entrapping the chemicals in crevices and/or recesses. Table 5-7 in Chapter 5 of TO 1-1-691 provides procedures for the removal of specific types of corrosion. 11.13.3.1 Preparation. Before starting chemical removal of corrosion products, remove paint from the area per TO 1-1-8 and clean all heavy deposits of grease, oil, and other contaminants from the surfaces to be worked in accordance with Chapter 3 of TO 1-1-691. Table 11-4. Typical Chemical Corrosion Removal Procedures for Magnesium Alloys Type of Corrosion Step 1 Corrosion Removal Light pitting or surface oxidation/etching Heavy pitting or etching Intergranular or exfoliation Corrosion on small parts which can be removed for treatment Remove corrosion with chromic acid pickle solution per Chapter 5 in TO 1-1-691. Not applicable. Remove corrosion by an appropriate mechanical method in this chapter. Not applicable. Remove corrosion by an appropriate mechanical method in this chapter. Remove corrosion according to SAE AMS-M-3171 (MIL-M- 3171). Step 2 Surface Treatment SAE AMS-M-3171 (MIL-M- 3171), Type VI per Section II of Chapter 5 in TO 1-1-691 As above As above As above Step 3 Protective Finish Approved paint system per paragraph 11.13.2.3 As above As above As above MIL-C-10578, COMPOUND, CORROSION REMOVING AND METAL CONDITIONING 20 A-A-59260 (MIL-C-14460, TYPE I), CORROSION REMOVING COMPOUND 6 11.13.3.2 Chemical Corrosion Removing Materials for Ferrous Metal Alloys Other Than Stainless Steels (CRES). Chemical corrosion/rust removers for steels are of two types; the MIL-C-10578 acid type and the A-A-59260 (MIL-C-14460) alkaline type. 11.13.3.2.1 MIL-C-10578 Corrosion Removing and Metal Conditioning Compound (Phosphoric Acid Base). MIL-C-10578 covers six separate types of phosphoric acid based corrosion/rust removing compounds used to remove corrosion/rust from ferrous metal surfaces. The following types are available: 11.13.3.2.1.1 Type I (Wash-Off) and II (Wipe-Off). Type I and II materials are suitable as rust removers for ferrous alloy metal parts. They may also be used as metal conditioners for ferrous and nonferrous (zinc galvanized, cadmium, brass, and relatively pure aluminum or alclad) metals prior to the primer and paint application and/or as a corrosion preventive to provide minor corrosion protection to these metals in an unpainted condition. Remove very heavy rust incrustations using an appropriate mechanical method listed in this chapter and heavy grease, oil, and other contamination per Chapter 7 of this manual as directed before application of these materials. a. Type I is a little more efficient in removing rust and grease than Type II. Type I materials are applied by 11-14
TO 1-1-700 either spray, dip, flow-on, brush, rag, or sponge and are always rinsed off with water, preferably hot. b. Type II materials are applied by either brush, rag, or sponge and do not have to be rinsed off with water, but are wiped off with clean, damp rags followed by wiping with clean, dry rags prior to painting. Type II materials leave a light, gray-white coating/film on the surface that acts as a pretreatment for painting. 11.13.3.2.1.2 Type III (Inhibited). Type III materials are intended for corrosion/rust removal from chromium plated ferrous alloy surfaces and those bare ferrous alloy surfaces requiring very close dimensional tolerances. Remove very heavy rust incrustations by an appropriate mechanical method in this chapter, and heavy grease, oil, and contamination per Chapter 7 of this manual as directed by paragraph 11.13.3.1 or by vapor degreasing before application of these materials. a. Type III materials are applied by, spray, dip, flow-on, brush, or by full immersion in a tank containing the material. Parts are left in the solution tank or the solution is left on the surface of the part until the rust is dissolved or loosened sufficiently to permit easy removal, and then the residue is rinsed off the surface with fresh, tap water, preferably hot, and the part is dried. It is then ready for application of the required corrosion preventive treatment or paint system application. 11.13.3.2.1.3 Type IV (Non-Foaming). Type IV materials are very similar to Type I, except that non-foaming detergents are included in the mixture. It is intended for use in pressurized spray systems at temperatures up to 150 °F (66 °C) maximum, after which it is rinsed off with fresh, tap water. 11.13.3.2.1.4 Type V (Immersion Tank). Type V materials are also very similar to Type I, except no grease removing solvents are used in these materials, so they are only suitable for use on surfaces from which all grease, oil, and contamination have been completely removed by cleaning per Chapter 7 of this manual as directed by paragraph 11.13.3.1. It is intended for use in immersion tanks either at ambient temperatures or at temperatures up to 140 °F (60 °C) maximum. 11.13.3.2.1.5 Type VI (Brush, Spray, or Dip). Type VI materials are surface pretreatments and/or rust converters for application on either newly sand blasted or corroded/rusty steel surfaces by spray, brush, or dipping. All old grease, oil, and dirt must be removed as well as all loose and scaly rust before applying these materials. After application, they are allowed to dwell on the surface for a minimum of six hours to form a pretreatment coating on corrosion free ferrous alloys or to convert the rust on a corroded ferrous surface to a protective, pretreatment film. After a dwell time of six hours, the excess materials are rinsed off, the surface is allowed to air dry, and then the surface can be primed and painted or treated with a CPC. MIL-C-10578, COMPOUND, CORROSION REMOVING AND METAL CONDITIONING 20 • High strength steel parts, those heat-treated above Rockwell C40 (180,000 PSI) tensile strength, are subject to hydrogen embrittlement when exposed to acids, therefore, use of acid rust/corrosion removers on these parts is prohibited. • Do not use acidic rust/corrosion removers if there is a danger of entrapping the materials in crevices or recesses, as they can cause corrosion in these areas. 11.13.3.2.1.6 Application and Use of MIL-C-10578 Corrosion Removing Compounds. The directions for application and use of types I through type VI materials can be found in Chapter 5 of TO 1-1-691. A-A-59260 (MIL-C-14460, TYPE I), CORROSION REMOVING COMPOUND 6 11.13.3.2.2 A-A-59260 (MIL-C-14460, Type I) Corrosion Removing Compound, Sodium Hydroxide Base; for Electrolytic or Immersion Application. This is a highly alkaline chemical corrosion/rust removing compound suitable for rust removal by immersion of the parts in the solution. It doesn't cause dimensional change of critical or machined surfaces, and it is safe to use on high strength steels as it will not cause hydrogen embrittlement. It can be used on small parts with or without paint, grease, or other surface coatings. The directions for application and use of these materials can be found in Chapter 5 of TO 1-1-691. 11.13.4 Stainless Steel (CRES) and Nickel Based Alloys. The following paragraphs outline chemical corrosion removal procedures for stainless steel (CRES) and nickel based alloy parts and assemblies. Table 11-5 provides procedures for removing specific types of corrosion. Chemical corrosion removal is recommended for severely corroded areas 11-15
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TO 1-1-700 TECHNICAL MANUAL CORROSI
Page 3 and 4:
TO 1-1-700 TABLE OF CONTENTS Chapte
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TO 1-1-700 TABLE OF CONTENTS - CONT
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Page 13 and 14:
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
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TO 1-1-700 Table 7-4. Corrosion Pre
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TO 1-1-700 Table 7-5. Preservation
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TO 1-1-700 either case, MIL-PRF-269
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TO 1-1-700 MIL-PRF-85285, COATING,
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TO 1-1-700 c. Cadmium plated surfac
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TO 1-1-700 a. Scuff sand and feathe
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TO 1-1-700 7.7.7.2 If surface is no
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TO 1-1-700 7.7.9.2 Where only parti
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TO 1-1-700 7.8.1 Type I Application
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TO 1-1-700 Extend (Loctite) 32150 J
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TO 1-1-700 There are three ways to
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TO 1-1-700 vulnerable surfaces clea
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TO 1-1-700 Table 8-2. Materials, Th
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TO 1-1-700 Table 8-4. Electronic Cl
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TO 1-1-700 Table 8-5. Accessories o
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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 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 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 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
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TO 1-1-700 - Robins Air Force Base

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