Replacing Fuel Filters

IMPORTANT: Replace fuel filter elements anytime audible alarm sounds and diagnostic trouble codes indicate plugged fuel filters (low fuel pressure). If no alarm sounds during operations, replace elements at 500 hours or annually whichever comes first.

RXA0107542-UN-18MAY10

Fuel Filters

A - Primary Fuel Filter

B - Final Fuel Filter

C - Water-In-Fuel (WIF) Sensor Connector

D - Drain Valve

1. Thoroughly clean exterior of fuel filters and surrounding area.

2. Place catch pan under drain valve (D) of primary fuel filter (A), then open valve to drain water and contaminants into suitable container.

3. Disconnect the water-in-fuel (WIF) sensor connector (C) from primary filter.

   IMPORTANT: Always replace both filters at the same time.

4. Remove the final fuel filter (B) first, for clearance, using a suitable filter wrench. Then remove primary fuel filter canister.

5. Remove primary fuel filter element and replace with new element.

   IMPORTANT: Do NOT prefill either fuel filter with fuel.

6. Remove packing for primary fuel filter canister and replace with new packing provided with filter element. Lubricate packing for primary fuel filter with fuel, and install canister onto base. Tighten 1/2 turn after packing contacts base.

7. Connect sensor.

8. Lubricate packing on new final fuel filter, and install filter onto base. Tighten 1/2 turn after packing contacts base.

9. IMPORTANT: Key must be turned to ON position for 60 seconds before starting engine to provide time to prefill fuel filters. Fuel system is self-bleeding.

   Turn key switch to ON position for 60 seconds to allow transfer pump to prefill fuel filters.

10. Turn key switch clockwise to START position, and run engine at 1200 rpm for 2 minutes.