5. Using a DAVCO Collar Wrench, shown in Fig. 3,
remove the clear cover and collar.
NOTE: Broken vent cap and collar warranty
claims will not be accepted if any tool other than
a DAVCO Collar Wrench (part number 482017)
is used for removal. During installation, the vent
cap is to be hand-tightened only, not tightened
with a wrench.
6. Remove the filter, cover O-ring, and vent cap
O-ring. Dispose of them in an environmentally
acceptable manner. See
Fig. 5.
7. Clean all threads and sealing surfaces very thor-
oughly. Even a small amount of dirt will prevent
the fuel/water separator from sealing, and an air
leak may result.
8. Install the new filter and grommet assembly and
cover O-ring on the housing.
Position the filter element so the key is lined up
with the keyway on the separator plate of the
housing. Use the arrow on the top of the end-
plate to align the filter. See
Fig. 6. Ensure the
filter element is fully seated by firmly pushing on
the endplate. The filter should not rotate freely.
1. Drain Valve
2. Drain Valve Cap
3. 120VAC Pre-Heater
4. Inlet Port/Check Valve
5. Lower Housing
6. Bypass Valve
7. 12VDC Pre-Heater
8. Filter Element
9. Spring
10. Cover O-Ring
11. Clear Cover
12. Vent Cap O-Ring
13. Vent Cap
14. Collar
Fig. 5, DAVCO Fuel Pro 487
1. Arrow (on the
endplate)
2. Keyway
3. Separator Plate
4. Key
5. Endplate
Fig. 6, Positioning the Filter Element
Fuel 47
108SD and 114SD Maintenance Manual, May 2018 47/5
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