Handbook for Light Artillery

by A. B. Dyer

2. Withdraw the firing-bolt by pulling straight out.

3. Detach the mainspring by first turning it completely over and then withdrawing its keep-pin.

4. Take out the thumb-screw which secures the extractor-crank to the worm-axle.

5. Withdraw the worm-axle by pulling straight out on the crank; and as the extractor-crank and worm-wheel slip off, remove them.

6. Pull out the extractor.

7. Pull out the loading-piston.

8. Unscrew the keep-pin of the cog-wheel and take the latter out.

This completes the dismounting of the mechanism.

To Mount.—Proceed in the inverse order, bearing in mind that in inserting the loading-piston it must be pushed in to its extreme forward limit, as marked by arrows on its forward end and on the rim of the feeding-hole, before the extractor is inserted. Also, in inserting the worm-axle the most convenient position is with the feather up, so that the extractor-crank will mount when it is turned arm down and to the rear. This is not necessary, but is convenient in assembling.