Monitoring the Three-Filter Fuel System Filters

Monitoring the Three-Filter Fuel System Filters - Ops
The engine is equipped with a prefilter that filters down to 100 microns, a water separator/coalescer that separates water and also filtering out particles down to 10 microns, and a final filter which filters material from 3 to 5 microns. The final filter is 98% effective at filtering material at 5 microns. When servicing these elements, all three filters should be changed at the same time. All three elements are located within the fuel filter module located on the left side of the engine.
  1. Located at the base of the fuel filter module is a water level sensor. Check the water level sensor each day.
    2. Notice: Do not over-tighten the water drain valve. Failure to properly tighten the water drain valve may cause damage to the water drain valve and housing.
  2. When water level reaches a predetermined height, the LED indicators on the front of the sensor change from green to red. At this time, remove the water from the module by opening the water drain valve at the bottom of the module.
    3. Note: Filter change intervals may be shortened to conform with established preventive maintenance schedules, but should never be extended.
  3. Replace the fuel filters using the Preventative Maintenance Tables.
Note:
Parent topic: Monitoring the Fuel Filters
Document Number: 0000022408
Manual Publication Date: 2024-03-05
Topic Publication Date: 2023-12-10