Figure 3-6. Fuel Filter and Strainer

TM-5-6115-545-12 Power Unit Utility Pack Gas Turbine Engine Driven (Air Research Model PPU85-5) Non-Winterized and (Air Research Model PPU85-4) Winterized Manual
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1. Drain Cock 9. N u t 2. Drain Cock 10. Stud 3. Filter body 11. Nut 4. Header 12. Strainer body 5. Screw 13. Gasket 6. Gasket 14. Retainer 7. Filter cartridge 15. Strainer element 8. Gasket Figure 3-6. Fuel Filter and Strainer b . S e r v i c e. S e r v i c e t h e f u e l f i l - t e r a s s e m b l y a t i n t e r v a l s s h o w n i n t a - b l e 3 - 1 . 1 , i t e m 1 2 , a n d p r o c e e d a s f o l- lows : (1) Open the drain cocks (1 and 2, fig. 3-6) at bottom of filter and strainer and allow to drain into suitable container. (2) Remove filter body (3) from header (4) by removing screw (5) and gasket (6). (3) Remove and discard filter cartridge (7) and gasket (8). Unscrew nut (9) from stud (10) and re- move strainer body (12) and gasket (13). (4) Remove retainer (14) and strainer element (15). (5) Clean the strainer element (15) and all parts including interior of strainer body (12) with cleaning solvent Federal Specification P-D-680. (6) Dry with compressed air or lint free cloth. (7) See figure 3-6 and install new filter cart- ridge (7) and gasket (8) and replace fuel filter and strainer in reverse order of removal. 3-35. Start Aid Assembly. a. Inspection. Inspect ether tank (8, fig.. 3-28), solenoid valve, and tank bracket for loose mounting, dents, loose fittings, and other damage. b . Servicing. Either tank must be replaced by Organizational Maintenance personnel when empty (tank weighs 2 lbs. 4 oz. when full; 1 lb. when empty). Service the starting aid assembly as follows: WARNING Be careful not to inhale ether gas as drowsiness and unconsciousness may result. (1) Disconnect atomizer (2, fig. 3-28) and tube (1) from intake manifold and solenoid valve adapter (3). (2) Crank engine and momentarily actuate ENGINE PRIMER switch while an observer watches adapter opening. If no spray is observed, notify Organizational Maintenance personnel. (3) Clean atomizer and tube with a source of compressed air. 3-36. Filler Cap, Gasket and Strainer. a . Inspection. (See fig. 3-7) (1) Inspect main fuel tank cap and strainer for breaks, cracks, holes or other evidence of damage. (2) Inspect main fuel tank cap gasket for tears or deterioration. Check that valve opening in cap I S clear of obstruction. (3) Inspect fuel tank filler hose for leaks. cracks, loose mounting, deterioration or other evi- dence of damage. C h a n g e 12 3 - 15

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