TM 1-1520-238-23 Change 3 B-81 (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 06030304 PISTON, HYDRAULIC BRAKE REMOVE 1.3 27, 52, 56, 59, 145, 152, INSTALL 1.3 154, 234, 262, 357, 369, REPAIR 0.1 387A, 402, 439, 446 06030305 PISTON SUBASSEMBLY REMOVE 0.2 27, 52, 56, 59, 145, 152, Y INSTALL 0.2 154, 234, 262, 357, 369, REPAIR 0.9 387A, 402, 439, 446 060304 PUMP, ROTARY REMOVE 0.7 22, 27, INSTALL 0.7 129, 154, 372  378 OVERHAUL 4.6 , , 434, 441 060305 FILTER BODY, FLUID REMOVE 0.5 27, 129, Y INSTALL 0.5 154, 262, REPAIR 0.7 376, 435 060306 COOLER, FLUID, TRANSMISSION REMOVE 0.7 7, 27, 70, 90, 93, INSTALL 0.7 100, 129, 154, 372, 376, 378, REPAIR 0.7 , , 440, 445, 447 060307 TUBE INSTALLATION TRANSMISSION REPAIR 0.3 376 06030701 TUBE ASSEMBLY, METAL REMOVE 0.2 376 R INSTALL 0.2 REPAIR 0.8