Fuel Filters—15 L Engine

1. Replace fuel filter elements anytime audible alarm sounds and diagnostic trouble codes indicate plugged fuel filters (low fuel pressure). If no alarm sounds replace filters after 400 hours operation

   Thoroughly clean exterior of fuel filter/water separator assembly and surrounding area.

2. 
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   Drain water and contaminants from primary filter into suitable container by opening drain valve (A) on bottom of filter.

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3. Dispose of drained material in accordance with local laws and ordinances.

4. Disconnect the water-in-fuel sensor connector (B) from primary filter.

5. 
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   Remove primary filter (C), secondary filter (D) and gaskets and discard filters.

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6. Do NOT prefill either fuel filter with fuel.

   Lubricate gasket for primary fuel filter with fuel, and install canister onto base. Tighten 3/4 turn after packing contacts base.

7. Lubricate primary fuel filter water separator gasket with fuel and install onto filter canister. Tighten 3/4 of a full turn after gasket contacts the base.

8. Lubricate gasket for secondary fuel filter with fuel, and install filter onto base. Tighten 3/4 turn after gasket contacts base.

9. Connect water-in-fuel sensor connector harness.

10. Turn key ON for 3 minutes before starting engine to provide time to prefill fuel filters. Fuel system is self-bleeding.

    Do not attempt to start engine until prefill is complete or a fuel system air lock may occur.

    Turn key switch to ON position for 3 minutes to prefill fuel filters.

11. Start engine and run fast idle for 2 minutes.