TM 10-4320-307-24 Table 2-2. Unit Preventive Maintenance Checks and Services -Continued 11 Weekly Air Cleaner Clean/change air cleaner element. Damaged hoses/  , Assembly pipe that would allow dirt to leak into system. Weekly Check restriction indicator. Weekly Clean precleaner dust pan. 12 Semi- Batteries, Clean battery terminals, terminal lugs, and broken/ damaged Broken/damaged annually Battery wire insulation cables. wire insulation. Cables, and Battery Box 13 Semi- In-field Check transducers for damage or loose mountings. annually Instrument Layout Check transducer wiring for secure attachment and broken or frayed insulation or wires. 14 Semi- Radiator Check engine coolant concentration. Class III leak. annually Assembly 15 Semi- Engine Change engine oil. annually Assembly 16 Semi- Turbo- annually charger WARNING Do not remove the air inlet and exhaust elbows while the engine is running.  Touching a moving impeller could  cause  serious  injury.    Objects  entering  the turbine  and  compressor  chambers  could  seriously damage   the   turbocharger,   and   fragments   ejected from the chambers could cause serious eye injuries. Severe  burns  can  be  caused  by  turbocharger  and exhaust   system   heated   during   operation   of   the engine.  If the engine has been running, do not touch the   turbocharger   or   exhaust   system   components until they have cooled. Loosen hose clamps (1) and pull air inlet pipe (2)from turbo- Damage hoses/ charger (3). pipes that would allow dirt to leak into system. 2-22 Item No. Interval Location Item to Check/ Service Procedure Not Fully Mission Capable If: