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TM 5-3825-220-13&P
6-4.14 Ball Valves - Cont'd
2.
If the valve leaks around the body/end fitting joints, attempt to stop the leak by tightening the body tie
bolts. If the leak is not stopped, proceed as in (3) below.
3.
For any other malfunction, it is recommended that the valve be replaced and the faulty valve be passed up
thru maintenance channels for repair or disposition. If emergency field repairs are absolutely necessary, proceed as
described in the Pittsburgh Brass literature in Appendix A.
6-4.15 Needle Valves
a.
A needle valve is utilized on the sampling assembly described in para. 2-4.8 and is shown in Fig. 2-22.
Detailed information is in Appendix A (Anderson, Greenwood Co.). A cross section for maintenance convenience is
shown in Fig. 6-21.
b.
When a needle valve malfunctions, it is recommended that it be replaced. The malfunctioning item should be
repaired, if repairable in a qualified shop. Recommended corrective maintenance procedures are as follows:
1.
If the valve is leaking at the stem, the teflon packing can be replaced by removing the operating handle
and the packing nut, extracting the old packing, inserting the new packing assembly, replacing and tightening the packing
nut and replacing the operating handle.
2.
If the valve will not hold pressure, it is recommended that it be replaced and the old unit passed up thru
maintenance channels for repair or disposition.
6-4.16 Dispensing Nozzle
a.
The 1-inch dispensing nozzles used in the fuel dispensing assembly are supplied in accordance with MIL-N-521
10, Type I, Size 1, Class B, Style 2.
b.
No field maintenance other than cleaning and lubrication is recommended for safety reasons. If the unit
malfunctions, it should be replaced and the old unit passed thru maintenance channels for repair or disposition. See Fig.
6-18.
6-4.17 Sampling Assemblies
a.
The sampling assembly is fully described in para. 2-4.8 and Fig. 2-22.
b.
The sampling assembly is a combination of items on which maintenance has been described. Treat the pipe as
in para. 6-4.10, the ball valve as in para. 6-4.13, and the needle valve as in para. 6-4.14. The goose neck pipe should
give no trouble unless bent out of shape. If bent, replace it. If plugged, unplug it. If welds are cracked or broken, replace
the unit and pass up thru maintenance channels for repair of replacement.
6-4.18 Meter Strainer Assemblies
a.
Information on the meter strainer assemblies is in para. 2-4.6 and Fig. 2-19. Detailed information on the meter
and the meter register (Smith Meter Co. and Veeder Root,
6-21
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