TM 10-4520-262-12&P 0020 00
Thread sealant is used to seal the threads on the various fittings of the fuel solenoid and
sediment strainer assembly. Once the sealant has set, it may require some force to break
the sealants bond. However, take care not to apply excessive force which could result in
damage to the components.
1. Before removing the fuel solenoid valve and sediment strainer assembly (1), drain the sediment
strainer (2) of fuel by loosening the knurled nut (3) at the base of the sediment strainer bowl (4).
2. Rotate the bale (5) upward while supporting the bowl (4).
3. Rock the bowl (4) slightly and remove it from the sediment strainer top assembly (6).
4. Empty the fuel from the bowl (4) into an approved container and discard. Do not empty the fuel
into a fresh fuel supply. Replace the bowl (4), rotate the bale (5) downward and center under the
bowl. Tighten the knurled nut (3) taking care not to overtighten.
5. Cut the tie wrap (7) securing the wire loom (21) that protects the fuel solenoid valve electrical
connectors and wires (8) to the sediment strainer outlet fitting (9). Remove the wire loom (21) by
separating at the seam and lifting off the wires. Disconnect the fuel solenoid valve connectors (8).
6. Remove the protective dust cap (10) from the fuel quick disconnect (11).
7. Remove the fuel quick disconnect (11) as detailed in WP 0020 and set aside.
8. Using a wrench, remove the fuel quick disconnect elbow fitting (12) and set aside.
9. Wrap a rag around the end of the fuel hose (13) and grasp the end of the fuel hose near the fuel
hose fitting (14) with a pair of pliers. Be sure that the rag is between the hose and the pliers so as
to protect the hose from damage.
10. While holding the fuel hose (13) securely, use a wrench to loosen the fuel hose fitting (14).
Remove the fuel hose fitting (14) from the sediment strainer outlet fitting (9). Have a petroleum
absorbment mat or tray with absorbent material nearby to collect any fuel that may be in the fuel
11. Remove the two screws (15) and protective dust cap (10) that secure the fuel solenoid valve (16)
to the external fuel system bracket (17).
12. While rotating the fuel solenoid valve and sediment strainer assembly (1) back and forth slightly
toward and away from the heater, slide the assembly (1) to the right until the solenoid valve inlet
fitting (18) clears the external fuel system bracket (17).
13. Drop the left end of the assembly with the solenoid valve inlet fitting (18) down below the bracket
(17) and slide the assembly (1) to the left while rotating slightly as described above. Continue
until the assembly (1) clears the sediment strainer bracket (19) and rubber grommet (20) to the
right of the sediment strainer.