TM 5-6630-218-10
2.5 Operating Instructions for Undissolved Water Test
Testing for undissolved (free) water is necessary to control the growth of
Microorganisms and the subsequent corrosion caused by such microorganisms in
aircraft tanks. In addition, undissolved water testing is essential to prevent filters
from icing in the fuel system. The testing methodology outlined in this section
determines the quantity of water in parts per million (ppm) present in a 500
milliliter (17.0 ounce) fuel sample and is in accordance with ASTM Standard
D 3240 - 86a.
This section contains information on the test operating procedures and the
required equipment and expendable needed to perform the tests.
2.5.1 Required Equipment and Expendable (See Figure 1.1, page 1-5,
Aviation Fuel Contaminant Test Kit Loading Plan)
Equipment List
Find No
Description
NSN/(CAGE) /N
P
10
18
19
2
0
36
Bottle, Narrow Mouth, PVC 850,
Graduated 1,000 Milliliter Capacity,
with Screw Cap
Monitor, Stainless Steel
Valve, Quick-Release Female with Plug
and Chain
Tweezers, for removing monitor pads
Wrench, Crescent, Adjustable, 8 inch
Detector Unit, Free Water, Aqua-Glo
Series III, with Instrument Pack GTP-768,
and Cable GTP-2402 with Ultra -Violet Bulb,
Power Cord
Sampler Valve Hose Assembly, with
Three-Way Valve
Jeweler's Screwdriver, Calibrating Standard,
stored in F/N 34
Remote Grounded Sampling Hose
Assembly
Wire, Grounding, with Clamps
6630-01-232-9537
6630-01-232-9542
6630-00-009-1423
6636-01-232-9536
(08071) 008606P
6640-01-235-7877
6630-00-999-0753
(32218) GTP-765
6630-00-999-0754
(08071) 15043
Expendables List
Find No
Description
NSN/(CAGE)P/N
23
Free-Water Pads, 50/Box
6640-00-235-3820
27
Teflon Tape, Anti-Seize, 1/2 inch x 260 inch,
8030-00-889-3535
for sealing threads
Paper Towels, for blotting
as site specified
2-23
