SYSTEM ASSEMBLY AND PREPARATION FOR USE (Continued)
Inspect the thermohydrometer (1) to ensure none of the round beads at the bottom are loose. Also check the
thermometer to ensure there is no separation in the mercury column. Discard any thermohydrometer that fails
Remove the 1,000 ml sample bottle (19) and one of the hydrometer cylinders (2) from the fuel contamination test
At one of the fuel drums, place the 1,000 ml sample bottle (19) directly beneath the elbow coupler valve, slowly
crack open the valve and fill the sample bottle approximately 75 percent full.
Pour fuel directly from the sample bottle (19) into the hydrometer cylinder (2) until it is approximately 75 to 85
Position the hydrometer cylinder (2) on a flat surface once it has been filled.
Remove any air bubbles on the top of the liquid surface by gently tapping the palm of the hand on the top of the
hydrometer cylinder (2).
Lower the thermohydrometer (1) gently into the liquid until it reaches a point where it will float by itself. Using the
stem, impart a spin on the thermohydrometer (1). (Spinning the thermohydrometer (1) will help center it in the
hydrometer cylinder (2) and keep it from sticking to the side of the hydrometer cylinder (2)).
Allow approximately five minutes for the temperature of the thermohydrometer (1) to equilibrate with the
temperature of the fuel sample.
Position the eye slightly below the surface of the fuel in the hydrometer cylinder (figure 3,1) and read the API
specific gravity where the fuel cuts across the scale divisions (2) on the stem of the thermohydrometer (3). Leaving
the thermohydrometer (3) in the fuel, read the temperature inside the body of the thermohydrometer (3). Record the
Remove the API gravity calculator (figure 2, 24) from the fuel contamination test kit.
m. On the API gravity calculator (figure 3, 4), align the fuel temperature (5) (in Fahrenheit) with the API gravity
reading (6) from step k. above.
Read the corrected reading on the API gravity calculator (4) at the 60 degree temperature line (7). The
corresponding API gravity reading is the corrected API specific gravity and fuel type (8).
Repeat steps e through n for the remaining fuel drums. Dispose of the fuel samples IAW local SOP.
Fill solvent dispensing bottle (figure 2, 19) from ether storage bottle (21). Flush all test components with ether, wipe
dry with a clean rag or paper towel and stow each item in the fuel contamination test kit. Pour any unused ether in
ether storage bottle (21). Stow bottles in fuel contamination test kit.
Secure the fuel contamination test kit for transport.
Position fuel drums (figure 1, 2) on spill containment unit (1). Fuel drums (2) may roll. Insert chocks or dirt berms on
both sides. If necessary to tow drums to spill containment unit:
Unfold the towing yoke.
Place the fuel drum shackles in the slots in the end of towing yoke connecting leg and install the quick release pin in
Connect the towing yoke to the towing vehicle pintle hook.
Maneuver the drum into position on the spill containment unit.