7.8.1 Fuel filter – Replacement

Replacing fuel filter with the engine stopped

1. Cut out the filter to be replaced. A Both filters cut in (operating position) B Left filter cut out C Right filter cut out 2. Unscrew cut-out easy-change filter with oil filter wrench. 3. Clean sealing face on filter head. 4. Check sealing ring on new easy-change fil‐ter and moisten with fuel. 5. Fit SOLAS shield (→ Page 19). 6. Screw on easy-change filter and tighten by hand. 7. Set three-way cock to operating position for both filters (normal position). 8. Replace other fuel filters in the same way. 9. Vent fuel system (→ Page 101).

Replacing fuel filter with the engine running

1. Cut out the filter to be replaced. 2. Open threaded vent plugs at filter head of cut-out filter and ensure that fuel filter is not under pressure. 3. Close threaded vent plugs. 4. Unscrew cut-out easy-change filter with oil filter wrench. 5. Clean sealing face on filter head. 6. Check sealing ring on new easy-change fil‐ter and moisten with fuel. 7. Fit SOLAS shield (→ Page 19). 8. Screw on easy-change filter and tighten by hand. 9. Set three-way cock to operating position for both filters (normal position). 10. Replace other fuel filters in the same way.

7.8.2 Fuel prefilter – Differential pressure check and adjustment of gauge

DANGER

WARNING Unguarded rotating and moving engine components. Risk of serious injury – danger to life! • Take special care when working on a running engine.

Engine noise above 85 dB (A). Risk of damage to hearing! • Wear ear protectors.

Differential pressure gauge adjustment

1. When installing the new filter element: align adjustable pointer (2) with pressure-indicat‐ing pointer (3) of pressure gauge (1). 2. Verify that differential pressure is within the limit.

Fuel prefilter – Checking differential pressure

1. With the engine running at full load or rated power, read off pressure at gauge (1). 2. If differential pressure as indicated between position of adjustable pointer (2) and pressure indicator of pressure gauge (3) is ≥ 0.3 bar, flush filter element of the cut-in filter (→ Page 108).