TM 9-2320-289-349-4.FRAME REPAIR (Con’t).lllNOTEThe following procedure may be used to replace any bracket, hanger,or support that attaches to frame.Ensure that any drivetrain, exhaust, and suspension componentsrequired to obtain direct access to any damaged bracket, hanger, orsupport are removed.When bolt is used to replace rivet on top or bottom flange of side rail,bolt must be installed from top down,1 .Remove rivet by shearing rivet head with rivet buster. Remove rest of rivet body fromusing drift punch and hammer.rivet hole2 .Install a 3/8 in. appropriate length hex head bolt, 3/8 in. “HEAVY” classification Iockwasher, and3/8 in. hex nut,3 .Tighten each nut to 30-40 Ib.-ft. (41-54 N.m).d.FRAME REINFORCEMENT 1 .See TB 9-2300-257-40.e. CRACK REPAIR WARNINGUse only effective chip guarding and personnel protective equipment(goggles/shield, gloves, etc.) when using grinder. Failure to follow thiswarning may result in injury to personnel.CAUTIONDO NOT use oxyacetylene welding equipment to repair cracks on CUCVSeries truck frames. Failure to follow this caution may result in weldand/or frame failures.NOTEl Straight cracks may result from high concentrations of stress in smallareas of frame, excessive bending movement, and torsional loading.l Sunburst cracks are caused by high loads being applied to a mountingbracket or crossmember which is not securely or properly attached torail,l Crossmember mounting flange cracks may be repaired in the samemanner as side rail cracks; however, ensure that weld bead is built upto provide a good, smooth radius.1 .Remove any component that will interfere with access to crack.9-9
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