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degrees F -138 degrees F (38 degrees C
-59 degrees C).
(1) Clean all parts with drycleaning solvent
(Item 1, App. F) and dry thoroughly.
(2) Clean all gasket sealing surfaces thor-
oughly.
(3) Inspect all mechanical parts for cracks,
dents, breaks, or wear. Replace or repair if un-
serviceable.
(4) Carefully inspect the gaskets for deterio-
ration, distortion, cracks, or breaks. Replace when
serviceability is doubtful.
c. Reassembly.
(1) Place gasket (13, fig. B-4) against the
flange face of gate valve (14) and align the holes.
(2) Place male flanged adapter (12) against
flange gasket (13) and align the holes.
(3) Insert hexagon head cap screws (10)
through washers (11) and through adaptor (12),
flange gasket (13) and gate valve (14), flange.
(4) Place hexagon nuts (9) on hexagon head
screws (10) and tighten to 30 inch-pounds.
(5) On the opposite end of flanged gate valve
(14) place gasket (8) against the control valve
flange face and align the holes.
(6) Place female quick disconnect coupling (7)
against gasket (8) and align the holes.
(7) Insert hexagon head cap screws (5)
through washers (6) and through coupling (7), gas-
ket (8) and gate valve (14) flange.
(8) Place hexagon nuts (4) on the hexagon
head cap screws (5) and tighten to 30 inch-pounds.
(9) Insert quick disconnect coupling gasket
(3) into female quick disconnect coupling (7).
(10) Insert hose assembly (2), male adapter
end, into female quick disconnect coupling (7) of the
flanged gate valve assembly and pull the cam-lever
arms inward until locked.
(11) Insert quick disconnect gasket (1) into
quick disconnect coupling of the hose assembly (2).
3-10. Control Valve (All Tanks).
a. Disassembly.
(1) Remove the wheel nut (1, fig. B-5) from
the top of the hand wheel (2).
(2) Remove hand wheel (2) from the top of the
bonnet stem (12).
(3) Remove the packing nut (3) from the bon-
net (8).
TM 5-5430-210-12
(4) Remove the gland spring (4), and packing
gland (5) from the bonnet stem (12).
NOTE
The two (2) pieces of packing (14) will
remain in the bonnet until after the
bonnet stem (12), the disc stem (13)
and the discs (10 and 11) have been re-
moved from the bonnet.
(5) Remove eight hexagon head cap screws (6)
and lockwashers (7) which hold the bonnet (8) to
the valve body (15).
(6) Lift the bonnet (8) complete with the bon-
net stem (12) disc stem (13) and disc halves (10 and
11) from the valve body (15).
C A U T I O N
Care should be taken to grasp the bon-
net stem with the left hand and, as the
discs clear the slots in the valve body,
grasp them and hold them together
with the right hand in order to avoid
their dropping off the disc stem and
damaging the sealing surfaces.
(7) Remove bonnet gasket (9).
(8) Remove the disc stem (13), from the bon-
net stem (12) by turning the disc stem counter-
clockwise.
(9) Remove the bonnet stem (12) from the bot-
tom side of the bonnet (8) by turning the stem
clockwise.
NOTE
The only time it should be necessary to
remove the packing (14) is when it is
to be replaced.
(10) Remove the two pieces of packing (14) by
driving them out of the bonnet from the bottom
side, with a piece of hard wood.
b. Cleaning and Inspection.
W A R N I N G
Drycleaning solvent, P-D-680, used to
clean parts is potentially dangerous to
personnel and property. Avoid re-
peated and prolonged skin contact.
Do not use near open flame or exces-
sive heat. Flash point of solvent is 100
degrees F -138 degrees F (38 degrees C
-59 degrees C).
(1) Clean all parts with drycleaning solvent
(Item 1, App. F) and dry thoroughly.
(2) Clean all gasket surfaces thoroughly.
(3) Inspect all mechanical parts for cracks,
dents, breaks or wear. Replace, or repair, if un-
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