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 2-36 Change 1 34 Exhaust system Check exhaust pipes, exhaust guard, Any major exhaust couplings, and muffler for leaks and leak or defective loose clamps. component. 35 Front winch a. Check oil level in hydraulic reservoir (5). Oil level should be visible in sight glass (6). If low, remove fillercap (3) and fill reservoir (5) with oil until oil level is centered in sight glass (6). WARNING • Exhaust gases can kill. Operate vehicle only in a well-ventilated area. Failure to do this may result in injury or death to personnel. • Do not touch hot exhaust system components with bare hands. Injury to personnel may result. • Hearing protection is required when maintaining vehicle with engine running. CAUTION Before opening hydraulic reservoir, ensure area around reservoir filler cap is clean. Do not allow dirt, dust, or water to enter reservoir. Failure to do this will cause damage to internal components. NOTE • If mission requires front winch operation and winch is inopera- tive, notify your supervisor. • Ensure vehicle is on level ground. VEHICLE EXTERIOR ENGINE RUNNING 33 After Air dryer Operation (Contd) Check air dryer (1) for proper operation; Air dryer moisture listen for moisture ejector (2). Notify unit ejector does not maintenance if ejector valve is inoperative. operate. WARNING When operating at temperatures of 53°F (12°C) or below, make sure air dryer moisture ejector operates before shutting down engine. Failure to do this may result in equipment damage and injury or death to personnel. 1 2