10. Controls and Instrumints
pound and install the tank adapter in the filling
plug opening in the top of the tank. Save the
a. Controls
filling plug for reuse.
(1) Bleeder valve.
(a) Location. The bleeder valve ( (2),
d. Mount the rack assembly on the work-
fig. 5) is located between the pres- _,
bench. Install the large and small tube assem-
sure gage and the 3-inch pipe nipple
blies in the holes provided in the rack assembly.
assembled as shown in figure 1.
e. Connect one length of rubber tubing to the
(b) Purpose. The bleeder valve pro-
bottom of the large tube assembly. Connect
vides the means for releasing the
the second length of rubber tubing to the bot-
test fluid pressure from the pressure
tom of the smaIl tube assembly.
gage.
Note. If the test is to be made of fuel tanks or
(2) Spindle assembly.
agent tanks, connect the rubber tubing from the large
tube assembly to the tank adapter on the tank. If the
(a) Location. The spindle assembly (3)
test is to be made of pressure tanks or high pressure
is located on the valve assembly end
sphere assemblies, connect the rubber tubing from the
of the 6-foot hose assembly.
small tube assembly to the tank adapter on the tank.
(b) Purpose. The spindle assembly is
f. The 90 street elbow can only be installed
used to bleed off trapped air.
in the side of the pump chamber when the
pump is separated from the tank. Lute the
(3) Pressure release control lever.
external threads of the heavy-duty 900 street
(a) Location. The pressure release con-
elbow with pipe thread-sealing compound and
t r o l lever (1) is located on the
thread it into the hole in the side of the pump
pump chamber.
opposite the pressure release control lever.
Draw the elbow up tight. Attach the pump to
(b) Purpose. The pressure release con-
the tank.
trol lever is used to control a one-
way pressure valve. W h e n the
g. Lute the threads on both ends of the 2-
pressure release control lever is
inch heavy-duty pipe nipple and the heavy-duty
closed, pressure from the pump is
bushing. Connect the bushing to the opening
allowed to charge the equipment but
in the pump chamber (back) and then connect
the pressure is restricted from re-
one end of the pipe nipple into the open end of
entering the pump. When the pres-
the bushing. Draw the connections tight. Con-
nect the 6-foot rubber hose assembly to the free
end of the 2-inch pipe nipple and draw the
connection tight. Close the spindle on the valve
end of the 6-foot rubber hose assembly (fig. 2).
h. Lute the threads of the stem of the pres-
sure gage with pipe thread-sealing compound
and connect the bleeder valve to stem end. Close
the bleeder on the valve. Lute the threads on
both ends of the 8-inch heavy-duty pipe nipple
with the pipe thread-sealing compound and
connect one end into the 90 street elbow. Draw
it up tight. Connect the 3/8 national pipe thread
end of the bleeder valve to the pipe nipple and
draw the threads up tight as shown in figure 1.
Note. If used equipment is received, inspect the M5
test set as described in paragraph 8 and assemble the
Figure 5. Controls.
test set as described in this paragraph.
AGO
6359A
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