TM 9-4520-272-14&P
0031 00
10. Remove fitting (19) with attached fitting (16) from top of the 3-way solenoid valve (9). Clean any
residual sealant from fitting (19) and set aside.
11. Apply fresh thread sealant to the threads of the fitting assembly with pressure gauge (18) set aside
earlier and install on the left side of the new 3-way solenoid valve in the same orientation as noted
earlier.
12. Apply fresh thread sealant to the threads of the elbow fitting (6) set aside earlier and install in the right
side of the new 3-way solenoid valve (9) in the same orientation as noted earlier.
13. Apply fresh thread sealant to the threads of fitting (19) with attached fitting (16) set aside earlier and
install to the top of the new 3-way solenoid valve (9).
14. Install the new 3-way solenoid valve (9) with attached fittings by aligning the holes in the base of the
3-way solenoid valve (9) with the holes in the burner valve mounting bracket (14).
15. Install the two screws (13) set aside earlier. Tighten securely.
16. Connect the solenoid wire harness (12) to the 3-way solenoid valve (9).
17. Install the return fuel tube (7) by positioning the short end (15) of the return fuel tube (7) over the
compression fitting (16) on the top of the 3-way solenoid valve (9). Engage return fuel tube (7) on
fitting and secure with compression nut (8).
18. Position the long end (17) of the return fuel tube (7) over the compression fitting on the top of the fuel
return to tank fitting (11). Engage return fuel tube (7) on compression fitting (11) and secure with
compression nut (10).
19. Install burner feed line (4) by engaging nut (5) on elbow fitting (6). Tighten securely.
20. Install fuel inlet line (1) by engaging nut (2) on elbow fitting (3). Tighten securely.
21. Install heater end panel and external fuel hose. Tighten all mounting hardware securely.
0031 00-2
