TM 10-3930-659-20 B-4. EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III. a. Column  1,  Tool  or  Test  Equipment  Reference  Code.    The  tool  and  test  equipment  reference  code correlates with a code used in the MAC, Section II, Column 5. b. Column 2, Maintenance Level.  The lowest level of maintenance authorized to use the tool or test c. Column 3, Nomenclature.  Name or identification of the tool or test equipment. d. Column 4, National/NATO Stock Number.  The National or NATO Stock Number of the tool or test e. Column 5, Tool Number.  The manufacturer's part number. equipment. B-5. EXPLANATION OF COLUMNS IN REMARKS, SECTION IV. a. Column 1, Reference Code.  The code recorded in Column 6, Section II. b. Column 2, Remarks.  This column lists information pertinent to the maintenance function being performed as Indicated in the MAC, Section II. Section 11.  MAINTENANCE ALLOCATION CHART (1) (2) (3) (4) (5) (6) MAINTENANCE LEVEL TOOLS GROUP MAINTENANCE DIRECT GENERAL AND NUMBER COMPONENT ASSEMBLY FUNCTION UNIT SUPPORT    SUPPORT DEPOT   EQUIPMENT REF   REMARKS C O F H D CODE CODE 00 M544E FORKLIFT TRUCK 01 ENGINE 0100 Engine Assembly Test 0.5 4 Service 0.1 2.0 1,2,3 Replace 7.0 1,5 Repair 20.0 1,5,8,9,12 Overhaul 40.0 Engine Mounts Replace 2.0 1,5 0101 Crankcase, Block, Cylin- der Head Engine Block Repair 8.0 1,5 Cylinder Liners Replace 8.0 1,5,8,9, 12,22,23 B-3