TO 1-1-700 - Robins Air Force Base

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TO 1-1-700 10.6 SPOT-WELDED ASSEMBLIES. Figure 10-5. Typical Fillet Seal MIL-PRF-81733, SEALING AND COATING COMPOUND, CORROSION INHIBITIVE 48 MIL-PRF-81309, LUBRICANT, CORROSION PREVEN- TIVE COMPOUND 46 MIL-PRF-16173, COMPOUND, CORROSION PREVEN- TIVE 37 o Spot-welded assemblies are particularly corrosion prone due to entrapment of corrosive agents between the parts of the assemblies (see Figure 10-6). Non-continuous, spot welded joints result in crevices in the non-welded lap areas. Moisture and other corrosives tend to accumulate in these lap areas. Corrosive attack causes skin buckling or spot weld bulging and eventual spot weld fracture (see Figure 10-7). Skin and spot weld bulging may be detected in their early stages by sighting or feeling along spot welded seams. This condition is prevented by keeping potential moisture entry points such as gaps, seams, and holes created by non-continuous spot-welds sealed off either by applying a continuous coating of MIL- PRF-81733, Type IV-12, Class 1, Grade A corrosion inhibiting sealant around the entire periphery of the faying surface area of the parts to be spot welded, assemble the parts together and hold them in place, spot weld the parts together while the sealant is still wet, and allow the sealant to cure before placing the assembly in service. As an alternate to the above procedure, apply a continuous fillet seal of MIL-PRF-81733, Type II, Class 1, Grade A corrosion inhibiting sealant to the joint edges of the spot welded parts after they are spot welded together and allow the sealant to cure before placing the assembly in service. Sometimes sealant cannot be used due to time constraints or unavailability. If so, after parts are spot welded together, apply either MIL-PRF-81309, Type II, MIL- PRF-16173, Grade 3, MIL-PRF-32033, or MIL-PRF-63460 preservative/corrosion preventive compound (CPC) to the joint edges of the spot welded parts, allow it to wick into the faying surface area, and then apply a continuous fillet of MIL- PRF-16173, Grade IV CPC to the joint edges of the spot welded parts. See Chapter 12 of this manual for additional information on sealants and Chapter 7 of this manual for additional information on CPCs. Consult Chapter 1 of TO 31-1-75 for additional information on welding. MIL-PRF-32033, LUBRICATING OIL, GENERAL PUR- POSE, PRESERVATIVE (WATER-DISPLACING, LOW TEMPERATURE) 41 MIL-PRF-63460, LUBRICANT, CLEANER AND PRESER- VATIVE 44 Figure 10-6. Spot Weld Corrosion 10-4
TO 1-1-700 d. After corrosion is removed from metal surfaces treat them as follows: MIL-DTL-81706 (ALODINE), COATING, CHEMICAL CONVERSION 23 Figure 10-7. Spot Welded Skin Corrosion Mechanism 10.7 HINGES AND LATCHES. Hinges and latches are highly susceptible to corrosion because of dissimilar metal contact that results from wear and damage to protective metallic coatings. They are natural traps for dirt, salt, and moisture. Door hinges and latches are especially vulnerable to attack. Inspect hinges and latches on shelter and van access doors and vents, and equipment/black boxes, etc., for corrosion and condition of preservatives/lubricants. 10.7.1 Van and Shelter (Fixed and Mobile) Hinges and Latches. If corrosion is found, treat as follows: MIL-PRF-32295, TYPE II, CLEANER, NON-AQUEOUS, LOW-VOC, HAP-FREE Exercise care when using MIL-DTL-81706, Class 1A Chemical Conversion Coating Material, near electronic hardware. It can cause corrosion of delicate electronic devices if not suitably protected. (1) Treat aluminum surfaces with MIL-DTL-81706, Class 1A Chemical Conversion Coating Material using procedures in Chapter 7 of this manual. MIL-C-10578, COMPOUND, CORROSION REMOVING AND METAL CONDITIONING 20 (2) Treat carbon steel (other than stainless steel/CRES) surfaces with MIL-C-10578, Type VI Brush-On Phosphoric Acid Base Corrosion Removing and Metal Conditioning Compound per procedures in Chapter 7 of this manual. (3) Stainless/CRES steel requires no further treatment. MIL-PRF-680 AND A-A-59601, SOLVENT, DEGREASING, TYPE II AND III 45 a. Clean affected areas with CCC-C-46, Class 7 cleaning cloth dampened with MIL-PRF-680, MIL-PRF-32295, or A-A-59601, Type II degreasing/dry cleaning solvent or other cleaner as specified by system-specific manuals or the equipment SPM. b. Remove corrosion with A-A-58054, Type I, Grade A or B abrasive mat, or 320 grit abrasive cloths, as appropriate. TT-I-735, ALCOHOL, ISOPROPYL 65 c. Wipe residue with CCC-C-46, Class 7 cleaning cloth dampened with TT-I-735 Isopropyl Alcohol and allow to dry. MIL-DTL-85054, COMPOUND, CORROSION PREVEN- TIVE 25 Do not apply MIL-DTL-85054 to functional areas of hinges and latches as this material dries to a hard film and will cause them to bind and/or seize up. e. Prepare bare metal non-moving parts requiring no lubrication for touch-up painting as specified in TOs 1-1-691 and 1-1-8. When environmental conditions or time do not permit, preserve surfaces requiring no lubrication Change 3 10-5
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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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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
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 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: TO 1-1-700 MIL-PRF-81733, SEALING A
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
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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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