Replace Fuel Filters—500 Hours (6.8 L and 9.0 L Tier II/Stage 2 Engine)

CAUTION:

TS1343
TS1343-UN-18MAR92

High-pressure fluid remaining in fuel lines can cause serious injury. Only technicians familiar with this type of system should perform repairs. Before disconnecting fuel lines, sensors, or any other components between the high-pressure fuel pump and nozzles on engines with High Pressure Common Rail (HPCR) fuel system, wait a minimum of 15 minutes after engine is stopped.

  1. N98721
    N98721-UN-17SEP12

    N108577
    N108577-UN-04DEC13

    9.0 L Tier II/Stage 2 Engine

    A - Drain Valves

    B - Primary Fuel Filter

    C - Secondary Fuel Filter

    Thoroughly clean exterior of filter elements and filter mounting areas.


  2. CAUTION: Fuel in filters may be under pressure. Open valve (C) on bottom of water separator bowl to relieve pressure prior to removing filter.

    NOTE: Use a suitable container to catch fuel when draining or replacing fuel filters.

    NOTE: Fuel/water separator is part of fuel filter assembly.

    Open drain valves (A) to remove water and contaminates from primary fuel filter (B) and secondary fuel filter (C) into a suitable container.

  3. IMPORTANT:

    N98881
    N98881-UN-17SEP12

    N109671
    N109671-UN-05FEB14

    9.0 L Tier II/Stage 2 Engine

    A - Primary Fuel Filter Canister

    B - Secondary Fuel Filter

    Always replace both filters at the same time.

    NOTE: Additional fuel will drain from filter housings.

    Rotate primary fuel filter canister (A) counterclockwise to remove it from housing.


  4. Remove cartridge from canister and discard cartridge.

  5. Rotate secondary fuel filter (B) counterclockwise to remove it from housing.

  6. IMPORTANT: DO NOT pre-fill either fuel filter with fuel.

    Install new cartridge in canister.

  7. Lube filter seals with diesel fuel and install filters.

  8. Bleed fuel system. (See Bleeding Fuel System in this section.)

CS12167,0000565-19-20140205