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 Change 1 2-43 45 Weekly Quick-start Check cylinder fluid level: (Contd) cylinder a. Loosen wingnut (5) and unscrew cylinder (4) from valve (6). b. Remove and shake cylinder (4). If cylinder (4) feels less than two- thirds full, replace cylinder (4). 46 Windshield Check to see if wiper fluid is full in wiper fluid container (7). If low, add fluid as level required. 7 4 6 5 5 4 6 NOTE Vehicles built after Serial No. 504923 will have quick-start cylinder mounted on brushguard, not on engine.