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TM 07661B-14/1
APPENDIX A
c.
Assembly.
(1)
Clean gas tubes (16) thoroughly, making sure holes in tubes are open. Assemble sleeve (18) on gas tube
and secure in dimension shown, figure 3-7, with hose clamp (19). Install tank bushing (17) on threaded end of gas tube.
Tighten securely. Do this for both gas tubes.
(2)
Insert gas tube assemblies into inlet ports of dry chemical tank. Tighten tank bushings securely.
(3)
Install elbows (15) and inlet tubes (14) into tank bushings.
(4)
If piping was disassembled beyond extent indicated in b above, subassemble piping before installation, per
arrangement shown in figure 3-7.
NOTE
Before connecting pipe fittings, apply four wraps of teflon tape (MIL-T-27730A) one to two
threads from end of any male pipe fitting. Apply two to three drops of Loctite 342 at the
leading edge of the tape. Surface of tape must be clean and free from dirt, grease or oil before
applying Loctite.
(5)
Connect piping subassembly to tank by turning short pipe (13) into vent port on top of tank. Tighten
securely.
(6)
Connect discharge piping assembly by turning short pipe (12) into tank discharge port.
(7)
Connect hose (10) to bottom of swivel adapter (23).
(8)
Couple the assembled piping to the inlet tubes at unions (9).
(9)
Connect hose (21) to swivel adapter (22).
d.
Installation.
(1)
Using suitable equipment, lift tank and attached piping into position on skid frame. Secure tank to frame
with stainless steel bolts, flat washers, lock washers, and nuts previously removed.
(2)
Connect hose reel inlet hose (3) to nipple (4). Seal all pipe fittings using instructions in NOTE, paragraph
3-14c.
(3)
Attach high pressure hose (1) to regulator tee subassembly.
(4)
Connect valve rod (5) to dry chemical valve (7) with nut (6).
(5)
Install Dry Chemical nitrogen cylinder. Refer to paragraph 2-10c.
(6)
Pressurize system and check for leaks. Use a soap solution of dishwashing detergent and water.
NOTE
Slow bubble leakage only permitted through pipe joint compound in packings and gasketed
joints. No leakage permitted in taper threaded joints.
6.
Service tank and nitrogen cylinder as required to return system to ready status, paragraph 3-10.
A 3-23
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