Replace Fuel Filters (Tier 2/Stage II and Tier 3/Stage III)

CAUTION:

TS1343-UN-18MAR92

Due to High-Pressure Common Rail system design, fuel in filter is likely to be under high pressure. To avoid possible personal harm, open valves (B) and (J) on bottom of filters to relieve pressure before removing each filter.

IMPORTANT: Change primary and secondary fuel filters if performance decline is noticed or a diagnostic trouble code appears. Reset code after replacing filters.

Replacing Primary Fuel Filter

IMPORTANT:

• 
  T8T2427-UN-04MAY15

  
  CQ298940-UN-08APR15

  A - Filter Header

  B - Filter Gasket

  C - Filter Element

  D - Filter Housing

  E - Water in Fuel (WIF) Sensor

  F - Drain Plug

  Take care not to contaminate the fuel filtration system. Clean the area around the components before performing any service.

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• Do NOT pre-fill filter with fuel. This may introduce debris into the fuel system.
• Change primary and secondary fuel filters if performance decline is noticed or a diagnostic trouble code appears. Reset code after replacing filters.

1. Close fuel shutoff valve. See Fuel Shutoff Valve in Maintenance—As Required section.

2. Thoroughly clean primary filter header (A) and surrounding area to keep from getting dirt and debris into fuel system.

3. Connect a fuel drain hose on the drain plug (F) at the bottom of the primary filter, then fully drain the fuel in a suitable container.

   NOTE: Use a suitable container to collect the drained fuel and other sediments during removal of the primary filter.

4. Disconnect the water in fuel sensor (E).

5. Rotate the housing of the primary filter (D) counterclockwise and remove it from the head (A).

6. Remove the gasket (B) and the filter element (C) from the housing (D) and discard them properly.

7. Clean internally the housing (D) using clean fuel.

8. Apply a thin film of clean oil on the new gasket (B) and install it on the slot of the head (A).

9. Install the new filter element (C) in the housing (D) with the tabs on the bottom towards the housing.

10. Install the housing (D) with the filter (C) on the head (A), rotate it clockwise until the housing tab snaps into the housing tab. Tighten an extra 3/4 turn.

11. Connect the water in fuel sensor (E).

    NOTE: Be sure to replace secondary fuel filter also and then prime system (see following).

Replacing Final Fuel Filter

IMPORTANT:

• 
  T8T2426-UN-04MAY15

  
  CQ298942-UN-08APR15

  A - Filter Header

  B - Filter Gasket

  C - Final Filter

  D - Drain Plug

  Take care not to contaminate the fuel filtration system. Clean the area around the components before performing any service.

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• Do NOT pre-fill filter with fuel. This may introduce debris into the fuel system.
• Change primary and secondary fuel filters if performance decline is noticed or a diagnostic trouble code appears. Reset code after replacing filters.

1. Close fuel shutoff valve. See Fuel Shutoff Valve in Maintenance—As Required section.

2. Thoroughly clean secondary filter header (A) and surrounding area to keep from getting dirt and debris into fuel system.

3. Connect a fuel drain hose on the drain plug (D) at the bottom of the final filter, then fully drain the fuel in a suitable container.

   NOTE: Use a suitable container to collect the drained fuel and other sediments during removal of the final filter.

4. Rotate the final filter (C) counterclockwise and remove it from the head (A).

5. Remove the gasket (B) and discard it with the final filter (C).

6. Apply a thin film of clean oil on the new gasket (B) and install it on the slot of the head (A).

7. Install the final filter (C) on the head (A), rotate it clockwise until it snaps into the head tab. Tighten an extra 3/4 turn.

   NOTE: Make sure that the drain plug (D) of the new final filter is firmly in place.

8. Before starting the engine, place the starter key in the “Run” position for 60 sec. in order to bleed the fuel system.