Emergency Filter Replacement, Davco

p3 dm 24.05.001

If the filter cover on the Davco fuel/water separator is broken, it will not be possible to operate the vehicle. A standard spin-on filter will correct this problem.

Refer to the Davco web site for additional information, www.davco.com.

To replace the filter on all Davco fuel/water separators, follow these procedures:

  1. Shut down the engine, apply the parking brake, and chock the tires.

    2. Note: The drain valve on the Fuel Pro 382 has a 1/2-inch (12.7-mm) opening; use a hose with a 1/2-inch pipe thread to fit correctly. Open the drain valve by turning it one-quarter revolution.

  2. Put a clean receptacle under the fuel/water separator and attach a piece of hose to the drain valve, to direct fuel into the receptacle.
  3. Drain the fuel until it is below the level of the collar. See Fig. for the model 382 fuel/water separator.

    1. Filter Collar

    2. Filter Vent

    3. Filter Vent Seal

    4. Filter Cover

    5. Filter Cover Seal

    6. Spring

    7. Filter Element

    8. Threaded Stud

    9. Fuel Port

    10. Drain

    11. Bottom Plate Collar

    Fig. 1, Davco Model 382 Fuel/Water Separator

  4. Remove the vent and seal.

    5. Note: The vent and seal are not needed in the emergency replacement. They should be retained for later installation at the time when the cover is replaced.

  5. Using a DAVCO collar wrench, remove the collar. See Fig.. Do not use pliers or channel-lock pliers.

    Fig. 2,  DAVCO Collar Wrench

  6. Remove the cover, cover seal, and spring. Retain them for later assembly.
  7. Remove the filter element and dispose of it properly.

    8. Note:  Remove the rubber grommet from the stud.

  8. Install the standard engine spin-on filter (included in the emergency kit) on the threaded stud.
  9. Install the cover, cover seal, and spring, as removed.
  10. Install the filter collar over the filter cover. Simultaneously apply downward pressure to the top of the clear cover until it is seated on the body of the lower housing and hand tighten the collar until it no longer spins freely. Using the collar wrench, tighten the cover 18 lbf·ft (24 N·m). This is equivalent to rotating the collar clockwise two or three additional ribs, depending on the specific filter model.
  11. Start the engine and run it at increased rpm for one minute to purge air from the fuel lines.
Note:
Parent topic: In an Emergency
Document Number: 0000112706
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-05-06