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 2-45 ROAD CONDITION PRESSURE Highway 43-47 psi (296-324 kPa) Cross-Country 31-35 psi (214-241 kPa) Sand/Mud/Snow 18-22 psi (124-152 kPa) Emergency 11-15 psi (76-103 kPa) 50 Weekly Tire (Contd) inflation Gauge tires for correct air pressure using ECU and tire inflation gauge and hose assembly. Manually inflate as necessary. For normal operation of vehicle, tire pressure should be as follows: NOTE CTIS ECU unit must be switched OFF to manually inflate tires. 51 Wheel nuts Use wheel stud nut wrench and handle Two or more studs to ensure all wheel studs and nuts are and/or nuts are present and tight. If stud nuts are missing or broken. loose, tighten and have unit main- tenance retighten to proper torque. 52 Front a. Check hydraulic oil reservoir for a. Mission requires winch damage and leakage. use of front winch and class III leakage is evident. b. Check bypass valve, winch pump, b. Mission requires and control valve for damage, leakage, use of front winch and security of mounting. Notify unit and class III leakage maintenance if leaking or damaged. is evident. c. Check operation of winch engage- c. Mission requires ment and control levers for range of use of front winch motion. and levers will not move or are too loose when used. d. Check hydraulic oil lines and d. Mission requires hoses for deterioration, breaks, cracks, use of front winch and looseness. and class III leakage is evident. WARNING If two or more stud nuts are loose or missing, notify your supervisor.