X. To Remove Spring Cylinder.
1. Remove recoil cylinder (I), gun (IV), counter recoil springs (V), sight (XI) and shields (IX).
2. Remove trunnion caps (right and left) by raking out four split pins, loosening swing bolt nuts, and withdrawing ½” trunnion cap pins.
3. Remove rocker stops (right and left) by taking out four split pins and ⅜” bolts.
4. Unlatch and spread trails.
Note.—Seven men and four pick handles (or similar implements) are required for succeeding operations.
5. Post two men with one pick handle at rear, two men with one pick handle immediately in front of elevating arc, and two men with one pick handle at front end of spring cylinder.
6. Raise cradle slowly, slightly to the rear until rocker clears top carriage. Carry to the rear sufficiently to rest middle pick handle in trunnions and transfer two men with handle to rear of carriage. Continue to the rear sufficiently to rest front pick handle in trunnions, transfer men to rear, and remove spring cylinder.
XI. To Remove Sight.
1. Remove three ⅜” bolts from rocker arm, left.