2530-00-770-9149 Slack Adjuster Wheel for Military Trailers P/N FC22219 & 8336704. SPECS: AGAV End Item Identification 3/4 ton 2-WHEEL tam cargo trailer. 1/2 ton 2-WHEEL tam D00807 trailer chassis. TEXT General Characteristics Item Description Steel, corrosion resisting, class 301, condition a, QQ-S-765; 0.156 in. thk; 16 teeth equally spaced; 0.6187 in. id; 1.406 in. od; 0.125 in. pitch dia; 0.136 in. width of tooth face 15120 WCD3