3. Replace the feed-valve, valve-slide, lever, and lever-slide, and the feed-valve and valve-lever screws. 4. Replace the lock-cam, lowering it vertically into place by its journal-boxes, with the oil-holes in journal-boxes on top. 5. Replace the ejectors. 6. Replace the locks. For this purpose each of the lock-cam recoil-plates must be uppermost, in succession. 7. Lower the breech-cover and screw up the cascable. TO ASSEMBLE THE LOCK. 1. Replace the truck and drive in the truck-pin. 2. Replace the sear and pin. 3. Replace the sear-spring and pin. 4. Screw on the mainspring, replace the rack with notch towards head of firing-pin. 5. Replace cocking-lever with its front tooth in front space on rack, put in lever-pin, and cock by turning cocking-lever to the front. 6. Turn the firing-pin so that its flat is parallel with the extractor-slot, and screw on the lock-head by means of the lock-wrench. 7. Replace the extractor and extractor-pin. THE MAXIM AUTOMATIC MACHINE-GUN. [Illustration: FIG. 98.] Weight 50 lbs. Calibre Small arms ammunition Rapidity of fire 600 to 650 shots per minute The gun consists of two parts, viz., the recoiling and non-recoiling. [Illustration: FIG. 99.] [Illustration: FIG. 100.] The =Recoiling Part= is the barrel and its extension. The barrel is an ordinary rifle barrel with a breech-sleeve to which is secured the extension. The extension of the barrel consists of two vertical steel plates, between which the lock and the gear connected therewith operate on guides and bearings. [Illustration: FIG. 101.] The =Lock= bears a vertically sliding piece, _D_ (called the carrier), on its fore end, and does not differ materially from that of an ordinary pistol. It is secured by a divided screw to the connecting-rod, _B_, of a crank, _E_, the shaft of which passes through the plates. There is also a handle to the shaft on the right side of the gun outside, and a curved arm to the crank. The =Trigger=, _F_, immediately in rear of the mainspring, _M_, is actuated by the rod, _S_, which is operated by the lever, _L_, having at its upper end a double button. Pressing this button draws back the rod and releases the hammer, _G_, and firing-pin, _H_. In rear of the gun is a catch, which when down prevents the lever being pressed forward. The =Non-recoiling Portion= consists of the gun-case and the water-jacket. This portion is mounted on trunnions, and has attached traversing, elevating, and depressing gear, and is provided with handles and sights for aiming and the double button for firing. On the right side of the gun-case is a solidly attached resistance-piece, _C_. The curved crank-arm, _A_, is at a small distance from it when the gun is in a firing position, to avoid escape of gas to the rear and fouling of the chamber.