TM 9-2320-209-10-2/TO 36A12-1B-1091-2 Table 1-3. Operator/ Crew Preventive Maintenance Checks and Services for M49A1C and M49A2C Fuel Tank Trucks - Cont NOTE: These checks are to be made in the order listed, within designated interval. B-Before operation A-After operation M-Monthly D-During operation W-Weekly 1-18 Change 1