Atch 2 T.O. 35E8-2-5-3.pdf

This document is a technical specification and installation guide for fairlead beam upgrades on military aircraft, specifically detailing modifications driven by Product Improvement Working Group Action Item 06-03 and UFC 3-260-01 requirements.

The document provides comprehensive technical drawings and installation procedures for the Modified Fairlead Beam assembly upgrade. Key components include two hand hole covers, a 1/4-inch thick top plate bolted to detail 4, twelve gussets, and specification changes to the original fairlead beam design to meet wheel load requirements outlined in the November 17, 2009 edition of UFC 3-260-01. The upgrade requires replacement of D-rings (referencing Figure 5-23), removal of four O-rings at specified locations, and installation of a new top plate using twenty-six 0.750-diameter bolts with Grade 5 or better hardware bearing material grade markings. The FLB Side Plate Gusset upgrade requires twelve gussets per FLB unit with dimensions of 5.00 inches width by 10.88 inches height and 0.50 inches thickness. Installation procedures specify using Sinmast #4 Regular industrial epoxy grout system (or equal) for core bore filling, with 12,000 PSI compressive strength and 24-hour cure time prior to subject application, limiting replacement to a maximum of four anchor rods per installation method. Technical drawings provide detailed measurements, weld specifications with 0.25-inch weld around ends, and alignment procedures using BAK-12 anchors with proper torque specifications of 120 additional degrees on the X-anchor lock washer and nut assembly.