I. To Remove Recoil Cylinder.

1. Remove valve turning gear cover (take out four ⅜” bolts attaching it to the piston rod bracket).

2. Remove valve turning gear, valve turning arm and connecting-rod as a unit by removing split pin, nut, and connecting rod pin from trunnion cap, right.

3. Remove piston rod (remove lash wire and two ³/₁₆” split pins) slide piston rod gear forward and remove.

4. Remove ¼” locking screw from top of piston rod bracket.

5. Remove ³/₁₆” cylinder retainer screw and loosen cylinder retainer, but do not remove retainer.

6. Remove brass spring-rod plugs from rear ends of both spring rods.

7. Screw spring compressor eye into rear of left spring rod. Make loop in compressor and attach double sheave close to cradle. Attach single sheave to lunette by means of loose cord of sheave rope.

8. Man pulling rope with from four to six men, retract gun not less than 10”, and secure rope to lunette.

9. Remove cylinder retainer, slide cylinder forward until free of groove in gun and remove cylinder. Handle carefully.

10. Allow gun to return to battery slowly by slacking off on pull rope.