TM  10-3930-638-24&P 3-6.   FUEL   SYSTEM   MAINTENANCE   (cont) a. Fuel Injection Lines and Fittings (cont). STEP LOCATION ITEM ACTION REMARKS REMOVAL  (cont) 3 Fuel  filters a. Tube nut (9) Loosen  and disconnect b. Elbow (10) Loosen and From  filter  head remove 4 Fuel  injection a. Tube nut (11) Loosen and pump disconnect b. Elbow (12) and sealing Loosen and From injection pump nut (14) remove c. Fuel inlet line (13) Remove d. Four connector bolts Loosen  and (Is) remove e. Copper washers (16) Remove  and discard f. Screws (17) and tube Remove clamps  (18) NOTE Remove flat nut (19) from clamp (18) only if necessary for replacement. g. Injection tube (8) Remove From engine and injection pump h. Tube nut (20) and Loosen and From tee (22) sleeve (21) disconnect i. Leak-off tube (4) Remove j. Tee (22) and sealing Loosen and From injection pump nut (23) remove CLEANING WARNING Dry cleaning solvent (P-D-680), used to clean parts is toxic and flammable. Wear protective goggles and gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes and don’t breathe vapors. Do not use near open flame or excessive heat and don’t smoke when using it. Failure to do so could cause serious injury. If you become dizzy while using cleaning  solvent,  get  fresh  air  immediately,  and  get  medical attention. If contact with skin or clothes is made, flush with large amounts of water. If contact with eyes is made, wash eyes with water  immediately,  and  obtain  medical  aid  immediately. 5 All  parts Clean Use  cleaning  solvent  P-D-680 3-73