PREVENTIVE MAINTENANCE CHECKS AND SERVICES (cont)

PREVENTIVE MAINTENANCE CHECKS AND SERVICES

TM-9-2350-256-20 Carrier Cargo Tracked 6-Ton M548A1 (2350-01-096-9356) M548A3 2350-01-369-6081 Manual
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TM 9-2350-256-20 CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS 2 - 1 0 P R E V E N T I V E M A I N T E N A N C E C H E C K S A N D S E R V I C E S - C o n t i n u e d CAUTION Equipment operation is allowable with minor leakage (Class I or II) with exception of fuel leaks. Consideration must be given to fluid capacity in item/system being checked/inspected. When in doubt, notify your supervisor. When operating with Class I or II leaks, continue to check fluid levels as required in your PMCS. Class III leaks require corrective action and should be reported to your supervisor. Leakage definitions for Unit PMCS: CLASS I-Seepage of fluid (as indicated by wetness or discoloration). Not great enough to form drops. CLASS II-Leakage of fluid great enough to form drops but not enough to cause drops to drip from item being checked/inspected. CLASS III-Leakage of fluid great enough to form drops that fall from the item being checked/inspected. CAUTION Water may enter the engine exhaust system when washing the vehicle. To prevent this occurrence, tape the exhaust outlets before washing the vehicle, or operate the engine while washing. Care must also be taken to prevent water from entering the personnel heater exhaust tube or auxiliary engine exhaust exhaust by covering the exhaust outlets with tape or cap. Do not use high pressure hoses inside the hull. Unwashed Vehicle. The driver or crew should present the vehicle for scheduled preventive maintenance services in a reasonably clean condition. That is, it should be dry and not caked with mud to such an extent as to seriously hamper Inspection and service. However, washing of the vehicle should be avoided immediately prior to an inspection, since certain types of defects such as loose parts and oil leaks may not be noticeable immediately after washing. Plates. Nameplates, caution plates, and instruction plates found dirty or corroded should be thoroughly cleaned and heavily coated with clear lacquer. Refer to TM 43-0139. Services. Unit Maintenance services are defined by, and restricted to, the following general procedures: Adjust. Make all necessary adjustments in accordance with instructions contained herein. Special lubrication. Special lubrication applies either to lubrication operations that do not appear in TM 9-2350-256-10, or to items that do appear, but which should be performed in connection with the maintenance operations. Service. Servicing usually consists of performing special operations, such as replenishing batter) water, draining and refilling units with oil, and changing the oil filters, fuel filters, and air cleaner filters. Tighten. Tighten all units to torque specified herein or, if not specified, tighten to accepted practices Use a torque wrench where specified. Do not over tighten, as this may strip threads or 2-6 Change 1

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