ANSWERS TO REVIEW QUESTIONS-Cont.

A25. A26. A27. A28. A29. A30. A31. A32. A33. A34. A35 A36. A37 A38. A39. A40. A41. A42. A43. A44. A45. A46. A47. A48. A49. a. Apply by wiping or scrubbing the affected area with an acid brush or toothbrush. b. Air dry or oven dry as applicable. c. Do not use on acrylic plastics or acrylic conformal coatings. d. Do not use on unsealed aluminum electrolytic capacitors. Damage may result to end caps and cause leakage. Silicon carbide paper because it is sharp and the individual grains can penetrate steel surfaces. Because it conforms to the surface, the applicator allows easier application of a constant scrubbing pressure on curved skin panels. MIL-C-85570. Select the proper cleaning agent for the method of cleaning chosen. Upward and outward. Dry-cleaning solvent. It is not oxygen compatible and will cause explosion or fire. A polyethylene sheet, polyethylene-coated cloth, or metal foil barrier materials. The maintenance instructions manual (MIM). NAVAIR 01-1A-509. Level I—Short term, up to 60 days. Level II—60 days to 1 year. Level III—Long term, 1 to 8 years. Level I preservation. All three. Grades I, IL and IV. Antifriction bearings, shock-strut pistons, and other bright metal surfaces. It is used when a water-displacing, low temperature, lubricating oil is required. Type III. Level I. Ground Support Equipment Cleaning and Corrosion Control, NAVAIR 17-1-125. Silicone sealant MIL-A-46146, type I, and polysulfide sealant MIL-S-81733 or MIL-S-8802. Uniform or direct surface attack Aluminum and magnesium alloys. White or gray powdery deposit. Avoid the creation of crevices during repair work. Intergranular corrosion is an attack on the grain boundaries of alloys under specific conditions. 4-56