42 Weekly Electrical a. Check wiring for loose connections, (Contd) system wear, and frayed wires. Notify unit maintenance if wiring has loose connections, or is worn or frayed. b. Check engine ground strap (1) and transmission ground strap (2) for fraying and security. Notify unit maintenance if either ground strap is loose or missing. 43 Compressed Check air reservoirs, lines, and air system fittings for signs of deterioration, breaks, cracks, and looseness. Notify unit maintenance if deteriorated, broken, cracked, or loose. 44 Drivebelts Check drivebelts (3) for cracks, breaks, Any drivebelt too fraying, and looseness. Notify unit loose, broken, cracked, maintenance if cracked or broken. 1/8 in. (3.18 mm) in depth or worn (50 percent of belt thickness), or has frays more than 2 in. (51 mm) long. Table 2-2. Operator/Crew Preventive Maintenance Checks and Services (Contd). ITEM NO. INTERVAL ITEM TO CHECK/ SERVICE PROCEDURE NOT FULLY MISSION CAPABLE IF: TM 9-2320-386-10 2-42 WARNING Secure hood in raised position with safety hook before servic- ing engine. 3 1 2