Figure 6-6. Installing first stave

TM 5-5430-209-12

Figure 6-6. Installing first stave.

(4) Install nuts (3, fig. 6-6) loosely on all chime

(2) Install nuts (3) on chime bolts (2) to hold

bolts (2), except two right ones, of the first intermediate

stave in position. Run down nuts by hand to fasten

stave (1, fig. 3-12).

stave loosely. Do no install nuts on two end bolts at

NOTE

each side of stave.

As remaining staves are installed, check

carefully the position of all radii, wedge, and

NOTE

strip gaskets.

Nuts are not tightened until the last stave in ring

is in place.

CAUTION

d. Remaining Intermediate Staves.

Radii gaskets must be placed between

(1) Face the outside of first intermediate stave

chimes and rubber gasket material at top

(1, fig. 3-12) and install the next 17 staves to the right

and bottom seams of all staves to insure a

of this stave (1), or in a counterclockwise direction

leakproof connection.

around the bottom. Follow the procedure in c above.

(2) Assemble hook ladder (1, fig. 3-13) and

hook it over the inside of the staves.

(3) Two special gaskets are required. Wedge

(3) As staves are installed, stand on ladder and

gasket (4) fills the space by the lap offset at vertical

hammer heads of all bolts (2) squarely into the

seam. Radii gasket (5) is installed underneath strip

channels. Install bolts in the alining holes and seat the

gasket (6) at bottom and top chimes of the stave.

bolts.

c. First Intermediate Stave.

CAUTION

(1) Set first intermediate stave (1, fig. 3-12)

All bolt heads must be seated squarely in

over chime bolts (2, fig. 6-6) so that its left seam will be

the stave joint channels to insure proper

outside the right seam on the first stave (2, fig. 3-12).

tightening of nuts.

(2) Use drift pins (3) in open bolt holes to aline

the holes in the first intermediate staves (1) with bolts in

(4) Move hook ladder to outside of tank.

the first stave (2). Install nuts (4) loosely on every sixth

Remove loose nuts and place a steel recessed washer,

or tenth bolt in each row to hold first intermediate stave

cupped side down, over each lap seam bolt. Install a

(1) in place.

nut loosely on each bolt.

(3) Install wedge gasket and radii gasket at

chimes on right seam of stave as instructed in b (3)

e. Last Stave.

above.

(1) To assist in installation of last stave (1, fig.

6-7), push all chime bolts (2) of the bottom flush with

gasket (3) to provide clearance for sliding in the last

stave.

6-6