Note.—The first and most important precaution to be observed in assembling guns and carriages is that all parts must be clean.

Where dismounting but not assembling operation is described, assembling is approximately the reverse of dismounting.

I.To remove recoil cylinder.
II.To disassemble recoil cylinder.
III.To assemble recoil cylinder.
IV.To dismount gun.
V.To remove counter-recoil spring.
VI.To remove breechblock.
VII.To replace piston rod, gland pkg.
VIII.To remove wheel.
IX.To remove shields.
X.To remove spring cylinder.
XI.To remove sight.
XII.To remove rocker and rocker arms.
XIII.To remove top carriage.
XIV.To remove equalizing gear and pinions.
XV.To remove brake mechanism.
XVI.To remove trails.

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.