Gun assembling, 74-76 carrying, 25 cleaning, 55_d_, 55_i_, 56_f_, 74_d_, 75_e_, 76_d_ description, 5_b_, 14, 72, 74-76 disassembling, 74-76 length, 9_d_ lubrication, 49 mounting board, 10_e_ preventive maintenance, 50, 52, 54-56 requisitioning, 5_b_ storage, 12_g_ Gun group assembling, 72-76 connecting to tank group, 17, 70, 73 description, 5_b_, 14, 72-76 disassembly, 72-76 lubrication, 49 maintenance, 72-76 preventive maintenance, 50, 52, 54-56 storage, 12_g_ weight, 9_c_ - H - Heat, effect on fuel, 34-36, 40, 43 Hex wrenches, 10_a_, 48_a_, 67_d_, 76_b_, 76_c_ Hose connector, 68_a_ Hose, fuel description, 73_a_ installation, 70_c_, 73_c_, 75 length, 9_d_ maintenance, 40_j_, 73_d_ removal, 40_j_, 70_c_, 73_b_, 75 replacement, 5_b_, 48_b_, 58, 70, 73 stiffening of, 21 - I - Identification, 6 Ignition action, 14_b_, 44, 76_a_ Ignition cylinders action, 14_b_, 31, 76_a_ description, 31, 76_a_ destruction, 30_a_, 46_f_ discarding, 30_a_ duration of fire, 9_b_ failure, 54_a_, 63, 64 loading of gun, 18, 76_a_ packing, 10_c_, 31 precautions, 18, 20, 31 storing, 31, 41 use in training, 15_b_, 18_a_, 30_a_ Ignition failure, 18, 26, 31, 44, 54_a_, 63, 64, 76_d_