ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 4-62 4.6.3.   FUEL FILTER BASE. a. Removal. (1)     Remove fuel filter element, refer to paragraph 3.12.2. CAUTION Fuel lines are fragile and can become twisted and damaged during maintenance.  Always use one wrench to hold one fitting stationary while the other fitting is loosened or tightened.  Failure to comply can cause damage to equipment. (2)     Remove fuel line (6, Figure 3-15) and disconnect fuel line (7). (3)     Remove capscrews (8) and fuel filter base (9). (4)     Cover all openings to prevent entry of foreign material. b. Repair. NOTE Repair of this item is limited to the replacement of the O-rings only. (1)     Remove plugs (10 and 11, Figure 3-15) and O-ring seals (12).  Discard O-ring seals. (2)     Remove connectors (13) and O-ring seals (12).  Discard O-ring seals. (3)     Remove air bleed vent screw (14) and O-ring seal (15). (4)     Remove retaining ring (16), cap (17), O-ring seal (18), plunger (19) and plunger housing (20).   Discard O-ring seal. (5)     Inspect fuel filter base (9, Figure 3-15) for cracks or other damage.  Replace if necessary. (6)     Position plunger housing (20, Figure 3-15), plunger (19), O-ring seal (18) and cap (17) in fuel filter base (9).  Install retaining ring (16) hand tight. (7)     Position O-ring seal (15) on air bleed vent screw (14) and install air bleed vent screw hand tight. (8)     Position O-ring seals (12) on connectors (13) and install connectors. (9)     Position O-ring seals (12) on plugs (10 and 11) and install plugs. c. Installation. (1)     Remove all covering installed during step a (4). (2)     Position fuel filter base (9, Figure 3-15) on cylinder head.  Install capscrews (8) and torque evenly to 26 lb-ft (35 Nm).