Description

1. TASK 70-40-00-400-501 Assembly/Disassembly - General Information

   1. Handling of Components

      1. It is necessary and very important to be careful when engine components are touched or moved during processing. All instructions must be obeyed.

      2. To prevent damage to the engine components, the correct general and special tools as specified in the applicable document must be used.

      3. Cadmium or silver-plated tools must not be used. At some given temperatures, cadmium/silver can cause brittleness on titanium components with local overstressing and cracking.

      4. To prevent corrosion, adhesive paper or adhesive tape that have compounds of chlorine in them must not be used for titanium components.

      5. To make sure they can be correctly installed, temporarily identify all parts, clips and brackets as to their location. Refer to the SPM TASK 70-09-01-400-501 for the procedure to apply temporary identification marks.

      6. Satisfactory baskets, containers or cases must be used for transportation, processing and storage. The specified equipment in the applicable document must be used.

      7. Unwanted particles can get in to openings, lines and other engine parts if components do not stay clean and are not carefully touched or moved. The correct protection of prepared surfaces is necessary to prevent damage. Covers or caps used on components must not be removed until assembly or installation of the components is started.

      8. Heat protecting gloves must be used when it is necessary to touch heated or cooled components.

      9. To prevent corrosion, bearings must not be touched with hands, fixtures or other equipment that can cause damage or contamination. Rubber gloves or plastic gloves must be used when bearings are touched.

      10. All parts must be clean when they are assembled or installed.

      11. Only the lubricants specified in the applicable documents must be used.

   2. Safety Precautions

      1. Approved fixtures and equipment must be used to lift heavy components and assemblies; this will prevent damage to a person or engine component. An approved local specification must be obeyed if it is given. To work or stay under loads that hang from this equipment is not permitted.

      2. Oil, fuel, or solutions used to clean a component must not touch your skin. If these solutions do touch your skin wash the area immediately; clothing soaked with these solutions must be changed immediately. Sufficient ventilation must be available when these solutions are used. Before any chemical materials are used, refer to the applicable local documents or specifications.

      3. The area in which you work must be kept clean from oil and fuel. If necessary containers can be used to collect oil and fuel drops.

      4. If necessary, approved clothing and goggles must be used for protection.

      5. Do not let dust, dirt, lockwire, nuts, washers or other unwanted particles go in to the engine. If unwanted objects do go in to the engine, the assembly procedure must stop until these objects are located and removed. A large quantity of time and labor can be necessary to locate and remove these objects.

      6. All corrosion preventive compounds and collected unwanted particles must be removed from components before assembly in to the engine.

      7. Tubes which include a fixed ferrule and a loose retaining nut must have the retaining nut at the fixed ferrule end tightened first.

   3. NOTE

      Any material coming in contact with titanium must be specially approved.