SERVICE MANUALINTRODUCTIONIntroductionGENERAL INFORMATION - SEALING COMPOUND USELOCTITE RETAINING AND SEALING COMPOUNDSCompound DescriptionThese products are single component, self- curing,polyester compounds which remain liquid while exposedto air, and harden by chemical action into toughstructural solids when confined between closely matedmetal parts. These compounds will resist solvents, heat,shock and vibration and are intended to provide apositive seal against leakage, and shear strengthresistance to loosening when used in the assembly ofthreaded, slip fit, or press fitted parts.Loctite Grades (General Usage)1. GRADE B (YELLOW) - Straight threaded fasteners.2. GRADE "AVV" (RED) - Straight threaded fasteners;higher strength for studs, etc.3. PLASTIC GASKET (RED) - Use as seal betweenmating surfaces (face sealant).4. HVV (UNFILLED PIPE SEALANT) - Use on taperedpipe threads.5. HYDRAULIC SEALANT - Use on fuel fittings withstraight pipe threads.NOTE: Once cured, these compounds have anoperating temperature range of -55° C to 150°C (-65to 300°F) and will resist attack by oils, chemicals,hydraulic fluids and solvents.Exceptions DO NOT use Loctite:1. Where other means of retaining the assembly areprovided such as, prevailing torque fasteners (fastenerswith distorted threads or plastic inserts), lock washers,lock plates and lock wires.2. On items requiring frequent servicing.3. When the operating temperature exceeds 150°C(300°F). (Example: Engine Exhaust Systems).4. On brass fittings and plugs.SURFACE PREPARATIONPlain and Phosphate Coated PartsClean the surfaces where compounds are to be appliedto remove heavy coatings of oil grease and dirt (rust orlight oil film are not detrimental). Normal shop practiceof cleaning or degreasing is adequate. Phosphate andoiled hardware is used in the "as received" condition.Zinc or Cadmium Plated Parts or for RapidHardeningAt least one of the mating surfaces should be degreasedwith a cleaning solution to which concentrated primer hasbeen added. (1 part primer concentrate to 30 partstrichlorethylene or 1-1-1 trichlorethylene). Allow surfacesto dry for 3 to 6 minutes before applying compound.Drawbar Studs or Special Stud ApplicationsDegrease parts with a cleaning solution to whichconcentrated primer has been added. (1 part primerconcentrate to 30 parts trichlorethylene or 1-1-1trichlorethylene). Allow surfaces to dry for 3 to 6 minutesbefore applying compound. In blind holes be sure toremove all chips and oil.Face Sealant (Plastic Gasket)Mating parts must be cleaned as for plain and phosphatecoated parts.CGES-185-3PRINTED IN UNITED STATES OF AMERICAPage 14
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