4.7 REPLACE COALESCER ELEMENTS AND SEPARATOR ELEMENT.

Figure 4-2. Filter Vessel Cover Torque Pattern

Figure 4-3. Coalescer and Separator Elements Removal

TM-10-4330-237-13P Filter-Separator Water Liquid Fuel for Advanced Aviation Forwarded Area Refueling System (AAFARS) Model E72FS-Z001 Manual
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TM 10-4330-237-13&P 4.7 REPLACE COALESCER ELEMENTS AND SEPARATOR ELEMENT. This procedure is performed when the reading observed on the differential pressure gauge during operation reaches or exceeds fifteen psi, or when the liquid fuel filter-separator is to be used with a different type of pumpage. (Coalescer elements should be dedicated to one type of pumpage [e.g., JP-4 only]). Used elements should be handled with rubber gloves due to the toxic effects of some fuel additives. New elements should be handled with clean rubber gloves or the packing bag to avoid hand contact with the element surface. Soiled hands - even normal skin oils - may contaminate the filter element and render it ineffective. This task consists of: a. Removal b. Service c. Installation INITIAL SET-UP: Tools: Materials/Parts Required: Tool Kit, General Mechanics O-Ring (Appendix I, Item 1) (Appendix B, Section III, Item 1) Washer, Lock (Appendix I, Item 18) Chemical and Oil protective gloves Washer, Lock (Appendix I, Item 19) (Appendix B, Section III, Item 2) Cloth, lint free (Appendix F, Section II, Item 1) General Safety Requirements: Equipment Condition: Liquid fuel filter-separator removed from WARNING AAFARS. TM 10-4930-250-13&P, para. 2.8. · Fuels are toxic and flammable. Do not get on person Filter vessel cover removed. (para. 4.6) or clothing. Do not use near open flame. Area should be well ventilated. · Fuel is flammable. Do not smoke. WARNING · Death or personal injury may result from the explosion of fuel fumes exposed to an open flame or spark, or to static discharge. Do not permit smoking, any open flame, or spark producing equipment within fifty (50) feet of the liquid fuel filter-separator. Ensure all equipments are well grounded prior to commencing any operation or maintenance task. · Rubber gloves should be worn when handling refueling system components due to the toxic effects of some fuel additives. NOTE This procedure assumes that the liquid fuel filter-separator has been defueled. However, some fuel will have accumulated in the sump due to normal drainage of saturated coalescer elements after defueling. a. Removal. (Figure 4-3) (1) Remove nuts (1), lock washers (2) and element retainer (3). 4-7

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