Drain Water From Fuel Filters

NOTE:

CQ298947
CQ298947-UN-15APR15

Tier 2/Stage II and Tier 3/Stage III

A - Drain Valves

B - Primary Fuel Filter

C - Secondary Fuel Filter

D - Prefilter

Replace fuel filter elements when audible alarm sounds and trouble codes indicate plugged fuel filters (low fuel pressure). If no alarm sounds during the 12-month service interval, replace elements then, or after the normal service interval, whichever comes first.

Drain water from fuel filters as often as necessary.

Capture water and any fuel in an approved container and dispose of properly.

If water is sensed in the fuel system, a diagnostic trouble code is generated.

If a diagnostic trouble code appears, drain fuel filters using drain valves (A) and reset code.

  1. Open left-hand engine compartment door. Fuel filters are on inside of left-hand engine compartment door.

  2. NOTE: Catch fluids with an approved container and dispose of according to employer and government guidelines.

    Open drain valves (A) at base of primary fuel filter (B), secondary fuel filter (C), and prefilter (D) (if equipped) until water has drained. Tighten valves.

  3. Close engine compartment door.

    NOTE: To replace fuel filter elements, see Replace Fuel Filters (Tier 2/Stage II and Tier 3/Stage III) and Replace Prefilter Element (Tier 2/Stage II and Tier 3/Stage III) in Maintenance—Every 1500 Hours section.

WM05597,00013B4-19-20150910