CHAPTER 4: MAINTENANCE OF MAIN ENGINE FUEL, AIR INTAKE,
AND EXHAUST SYSTEMS
4-14 REPLACE/REPAIR/SERVICE PRIMARY FUEL FILTER-Continued
Loosen retaining screw (3) and remove fuel filter head (4). Remove and discard filter head gasket (5).
Remove fuel filter element (6) from filter body (7). Discard fuel filter element.
Dry-cleaning solvent used to clean parts is potentially dangerous to personnel and
property. Do not use near open flame or excessive heat. Flashpoint of solvent is 1380F
Clean inside of filter body (7) with dry-cleaning solvent and stiff brush. Scrape off sludge or gum, if necessary.
Attach constant bleed line (2) and install new fuel filter element (6).
Install fuel filter head (4) using new filter head gasket (5), and tighten retaining screw (3).
Bleed air from primary fuel filter. Activate electric fuel pump until fuel runs from bleeder valve (1), then tighten
Do not smoke or use open flame when working on fuel system: explosion may occur, causing severe
injury or death.