TM 10-3930-659-20 2-12. INSPECTION INSTRUCTIONS (Con't). c. Inspect metal lines, flexible lines or hoses, and metal fittings and connectors for the following: (1) Metal lines for sharp kinks, cracks, bad bends, and dents. (2) Flexible lines or hoses for fraying, evidence of leakage, and loose metal fittings or connectors. (3) Metal fittings and connectors for thread damage and worn or rounded hex heads. d. Inspect castings, forgings, and machined metal parts for the following: (1) Machined surfaces for nicks, burrs, raised metal wear, and other damage. (2) Inner and outer surfaces for breaks and cracks. e. Inspect bearings In accordance with TM 9-214. 2-13. DISASSEMBLY AND ASSEMBLY INSTRUCTIONS. Follow these general practices when performing disassembly and assembly procedures: (1) Keep major components together whenever possible and practical. (2) Tag hoses, electrical wires, cables, and harnesses to identify them and aid during installation. (3) Keep related parts together for identification purposes. (4) Temporarily install attaching hardware such as screws, bolts, washers, and nuts to prevent loss. (5) Only disassemble to the point of the problem. (6) Ensure that parts are clean and lubricated before assembly. 2-14.  REPAIR INSTRUCTIONS. a. Repair castings, forgings, and machined parts using the following Instructions: (1) Repair minor cracked castings or forgings in accordance with TM 9-237. (2) Repair minor damage to machined surfaces with an abrasive cloth (Item 7, Appendix C) dipped in dry cleaning solvent (Item 31, Appendix C). (3) Replace any deeply nicked machined surface that could affect the assembly operation. (4) Repair  minor  damage  to  threaded  capscrew  holes  with  thread  tap  of  same  size  to  prevent  cutting oversize. b. After repair, thoroughly clean all parts to prevent dirt, metal chips, or other foreign material from entering any working parts. 2-7