3-22. INTERNAL TANK/EXTERNAL TANK SELECTOR MAINTENANCE -Continued.
Inspect valve, elbows, and tubing for stripped or damaged threads.
Inspect valve body for cracks, holes, and corrosion.
Cleaning solvent, Federal specification P-D-680, is toxic and flammable. Use only in a well-
ventilated area. Avoid prolonged breathing of fumes. Keep solvent away from flames. Do not
use in excessive amounts. Avoid skin contact.
Clean valve with cleaning solvent (item 11, Appendix E).
Allow to dry completely.
Install three elbows (2, 10, and 11) to valve (12) and aline.
Install locknut (7), valve (12), and nut (4).
Install knob (5) and tighten setscrew (6).
Connect three tubes (1, 8, and 9) to valve (12) per tagged identification.
Install elbow (13).
Install fuel oil filter per para. 3-35e.
Install access door per para. 3-10d.