L5WA36 TO Reference 1C-5M-3 (page 5-2).pdf

This technical document is a Technical Order (TO) 1C-5M-3 page detailing precise procedures for repairing trunnion bearings in two specific scenarios: bearings that need boring (Section 5.4.1) and bearings that do not need boring (Section 5.4.2). The instructions provide detailed technical guidance for machining and repairing trunnion bearings with specific dimensional constraints, including cautionary notes about bore diameter limits, reaming procedures, surface treatments, and finishing requirements. Key technical specifications include using a boring tool attached to the MLG support beam, maintaining precise diameter measurements (11.135 inches maximum), fabricating bushings from 7075-T6 AL material with specific dimensional tolerances, and performing various inspection and finishing processes such as penetrant inspection, shot peening, and eddy current surface scanning.