TM 1-1520-238-23 B-78 Change 3 (1) (6) (5) (4) (3) (2) MAINTENANCE LEVEL GROUP NUMBER REMARKS CODE TOOLS & EQUIP REF CODE DEPOT (D) AVIM (F) AVUM (O) MAINTENANCE FUNCTION COMPONENT/ASSEMBLY 0602 INSTALLATION, ENGINE NOSE GEARBOX REPAIR 3.3 145, 317, 372, 407, 433, 434, 435, 446 060201 DRIVE UNIT, ANGLE SERVICE 0.6 3, 7, 27, 70, 90, REMOVE 1.9 94, 97, 107, 129, INSTALL 1.9 138, 145, 154, 199, 262  293 REPAIR 1.2 1.2 , , 372, 376, 378, 423, OVERHAUL 12.1 434, 439, 441 06020101 PUMP, LUBE NOSE GEAR INSPECT 0.2 27, 129, REMOVE 0.9 154, 372, INSTALL 0.9 435 OVERHAUL 4.0 060202 BOWL ASSEMBLY, LUBE PUMP REMOVE 0.4 7, 27, 89, 90, 129, INSTALL 0.4 145, 154, 227, 262, REPAIR 0.8 372, 434, 435, 439 060203 PUMP, LUBE NOSE GEAR INSPECT 0.2 27, 129, REMOVE 0.9 154, 372, INSTALL 0.9 435 OVERHAUL 4.0 060204 ADAPTOR, MOUNTING REMOVE 0.2 145, 317, INSTALL 0.2 372, 407, 433  435 REPAIR 2.0 , , 446 060205 SHROUD ASSEMBLY, REMOVE 0.4 145, 317, GEARBOX INSTALL 0.4 372, 407, 433  434 REPAIR 0.7 , , 435, 446 060206 DETECTOR, CHIP REMOVE 1.0 27, 129, INSTALL 1.0 154, 376, REPAIR 0.6 434