UFC 3-460-03
21 JANUARY 2003
3.3.3.3. Check the adapter gasket and adapter to make sure the gasket and adapter threads are
clean.
3.3.3.4. Complete the installation of the F/S cartridge assemblies by lowering each of the filter
element assemblies onto one of the deck plate nipples. Make sure that each of the element
assemblies is screwed down onto its deck plate nipple and the gasket is seated properly and seals
tightly. Next, apply the procedures in paragraphs 3.3.3.4.1. through 3.3.3.4.6. below:
3.3.3.4.1. Replace the cover gasket with a new gasket of the same grade and manufacture as the
old one.
3.3.3.4.2. Swing the cover back into place, lowering the lifting handle as you do so.
3.3.3.4.3. Swing the eyebolts up into place and tighten the nuts using the criss-cross method.
Do this so that the cover gasket and cover are seated properly. When tightening cover bolts and
nuts, use a torque wrench. Tighten nuts just enough to prevent leaking through the dome cover
seal (refer to manufacturer's instructions for torque requirements) and to eliminate possible
damage to the vessel.
3.3.3.4.4. Close the manual water drain valve.
3.3.3.4.5. Slowly fill the separator.
3.3.3.4.6. Pressurize the vessel to inspect all gaskets and screwed connections for leaks; tighten
all loose connections.
3.3.3.5. NOTE: Remember, once a system is opened for any reason it must be sampled before the
aircraft is serviced.
3.3.3.6. Notify the FMF that the F/S is ready to be put back into service and is awaiting QC
flushing and sampling. (This is necessary to ensure the fuel meets quality requirements.)
3.3.3.7. After the cartridges (elements) have been replaced and the F/S is ready to put back into
service, follow the steps below:
3.3.3.7.1. Data decals are provided with new elements. Cut off the bottom portion of the
manufacturer's decal under the words "Element Change Criteria" and attach only the upper
portion of the decal. This shows the element part number and national stock number (NSN) for
the F/S vessel.
3.3.3.7.2. Record on the F/S the next change date (month and year) and the maximum
allowable DP. Make sure the information is highly visible.
3.3.3.7.3. Set up and keep a logbook or wall chart in the LFM shop. Record the following
information in this book or chart: pumphouse facility number; F/S number; month and year
replacement cartridges were installed; NSN of the cartridge; number of elements;
manufacturer's cartridge; and lot number, if available.
3.3.4. Element Replacement for a Horizontal F/S:
3.3.4.1. After the vessel has been drained thoroughly, remove the head flange bolts and open the
vessel. For the original KMU-416/F modification kit, use the following method:
3.3.4.1.1. Starting with the bottom (left) cartridge, loosen the 12.7-millimeter (0.5-inch) nut on
the adapter mounting rod. Slowly drain the fuel trapped in the manifold by loosening the
bottom element (cartridge).
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