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 2-28 Change 1 17 After Steering Operation system (Contd) a. Check steering knuckle boots (1) for tears. b. Check power assist cylinder (3), b. Steering com- drag link (2), regulator (6), manual ponents are loose or shutoff valve (5), and hoses (4) for damaged. looseness and damage. Notify unit maintenance if loose or damaged. 4 3 5 NOTE Steering knuckle boots discovered to be torn on top or sides are serv- iceable only if packed with grease until repaired. A tear at the bot- tom of boot will not retain lubrica- tion in the joints. Notify unit maintenance if boots are torn. 1 2 6