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TM 5-5430-210-12
serviceable.
(4) Carefully inspect the gasket for deterio-
ration, distortion, cracks or breaks. Replace when
service is doubtful.
(5) Polish bonnet stem with a crocus cloth,
(Item 2, App, F) then coat with grease (Item 3, App.
F)
c. Reassembly.
(1) Screw disc stem (13, fig. B-5) into the bon-
net stem (12) approximately four complete turns.
(2) Screw the disc stem (13) completely into
the bonnet (8),
(3) Lay the valve body (15) on its side on a
clean surface.
(4) Insert the gasket (9) over the disc item
(13).
(5) Install the two disc halves (10 and 11) onto
the disc stem (13) and insert the disc halves into the
slot in the valve body.
(6) Bring the valve body (15) and the bonnet
(8) to an erect position, align the bolt holes and the
gasket bolt holes, and install the eight (8) each
hexagon head cap screws (6) and lockwashers (7)
finger tight,
(7) Insert the two halves of the packing (14)
onto the bonnet stem (12).
(8) Install the packing nut (3) onto the bonnet
stem (12) and using the hands push the nut down
onto the neck of the bonnet until the packing is well
seated into the bonnet.
(9) Remove the packing nut (3) from the bon-
net stem (12) and install the packing gland (5) and
the gland spring (4) onto the stem. Install the pack-
ing nut (3), hand wheel (2) and wheel nut (1) onto
the bonnet stem (12), Tighten the packing nut.
(10) Torque the eight hexagon head cap
screws which hold the bonnet to the valve body to 16
foot-pounds.
3-11. Emergency Repair Items.
a. General Emergency repair items consist of
sealing clamps and wood plugs (fig. 3-1 and 3-2).
b. Emergency Repairs with Sealing Clamps.
(1) Small slits, tears, or cuts (not to exceed 6
1/2 inches (16.51 centimeters) in length) will be re-
paired with sealing clamps. (fig 3-l.)
(2) The size of the damaged tank area (open-
ing) needing repair will govern the size and applica-
bility of the clamp to affect a tank repair. The fol-
lowing criteria is furnished as guidance in selection
of appropriate size clamp.
(a) For holes (tears) up to 2 inches (5.08
centimeters) in length, install the 3-inch (7.62-cen-
timeter) sealing clamp.
(b) For holes (tears) 2 to 4 inches (5,08 to
10.16 centimeters) in length install the 5-inch
(12.7-centimeter) sealing clamp.
(c) For holes (tears) 4 to 6 1/2 inches (10.16
to 16.51 centimeters) in length, install the 7 l/2-
inch (19.05-centimeter) sealing clamp.
(d) It may be necessary to increase the size
of the tears slightly with a pocket knife in order to
be able to insert the bottom plate of the sealing
clamp.
(3) Slip the bottom plate of the sealing clamp
through the hole or tear and rotate it until it is cen-
tered and parallel to the tear (View A).
(4) Center the top plate of the sealing clamp
on the threaded shank and directly over the bottom
plate (View B).
(5) Tighten the wingnut to securely clamp the
tank wall between the two plates, Tighten enough
to stop leak. If pliers are used, DO NOT exert ex-
treme tightening that might strip the threads of
clamp stud or that might damage the tank fabric
(View C).
(6) Remove the nylon cord if desired.
3-10
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