Contents of Leather Pouch for Spare Parts (carried in Trail Boxes of 3-inch Guns):—
| For Breechblock— | ||
| 50 | Split pins | |
| 1 | Block latch and spring | |
| 1 | Firing pin and spring | |
| 1 | Firing pin sleeve | |
| 2 | Handy oilers, 5-16 inch | |
| 1 | Hinge pin catch | |
| 1 | Lever latch spring | |
| 1 | Locking bolt, nut and pin | |
| 1 | Locking bolt spring | |
| 2 | Oil hole covers with screws | |
| 1 | Pallet pin | |
| 1 | Sear | |
| 2 | Trigger shaft detent | |
| For Hand Fuze Setter— | ||
| 2 | Corrector scale screws | |
| 1 | Guide plate lock screw | |
| 2 | Index bar screws | |
| 1 | Index plunger and spring | |
| 2 | Oil hole screws | |
| 1 | Range index | |
| 3 | Range ring screws | |
| 1 | Stop pin screw | |
| For Bracket Fuze Setter— | ||
| 1 | Corrector scale screw | |
| 3 | Guide screws | |
| 4 | Housing screws & split washers | |
| 1 | Knob washer | |
| 1 | Range worm crank & knob taper pin | |
| 1 | Range worm crank handle | |
| 2 | Range ring screws | |
| 3 | Split pins (0.125) | |
| 1 | Spring and spring cover with screw | |
| 2 | Stop pins with rivets | |
| For Cylinder— | ||
| 1 | Drain-plug, cylinder | |
| 1 | Elevating & traversing lock spring | |
| 1 | Filling plug (piston rod) | |
| 5 | Rings Garlock packing, ¾ in | |
Special Wrenches, Spanners, other tools and accessories will be used only for the purposes for which they are intended. This purpose is usually stamped upon the tool.
In assembling or disassembling parts of the materiel, no part will be struck directly with a hammer. If force is necessary, a piece of wood or copper should be interposed between the hammer and the part struck. All nuts are provided with split pins as keepers.
A pair of wire cutting pliers is provided for use in pulling split pins, cutting wire lashings, etc. When a nut is assembled the split pin should always be inserted and properly opened.
Axes, hatchets, picks, pick mattocks and shovels are carried on the carriage for use in the field and will not be put to other uses. The working edges will be kept bright and lightly oiled, the edges being sharpened if intended for cutting, or smooth if intended for digging. Deformed blades, edges or points should be straightened at the anvil and forge or in a vise. Shovel points are straightened with a hammer on a block of wood.
The side edges of shovel blades should not be used as a mattock, as such treatment will deform the blade. In the field, split handles should be wrapped with a cord until they can be replaced by new handles.
Canvas Buckets are used for watering animals, for washing carriages and equipment. Whenever possible, they should be dried before folding and replacing in the holders on the carriages.
A rip or hole may be patched and made practically water-tight by a coat of shellac.
Lanterns are used for illuminating purposes in the field only.