TM 10-4320-315-24
2-31. MAINTENANCE OF FUEL VALVES AND LINES
This task covers:
a.
Remove
b.
Install
INITIAL SETUP:
Tools
Equipment Conditions
General Mechanics Tool Kit
Pumping assembly is shutdown (refer to TM 10-4320-
(Item 1, Appendix B)
315-10).
Battery assembly is disconnected (para. 2-16).
Materials/Parts
Tags (Item 21, Appendix C)
Teflon Tape (Item 22, Appendix C)
Tie Straps (Item 20, Appendix C)
Lockwashers (TM 10-4320-315-24P)
a. REMOVE. (Figure 2-25)
(1)
Disconnect fuel lines as follows:
(a)
Cut tie wraps in fuel lines.
(b)
Disconnect fuel supply line (1) at fitting (2) of fuel selector valve (3) and fitting (4) at engine fuel
transfer pump (5). Drain line in suitable container.
(c)
Disconnect fuel supply line (6) at fuel tank fitting (7) and fitting (8) of fuel selector valve (3). Drain line
in suitable container.
(d)
Disconnect fuel supply line (9) at fitting (10) of auxiliary fuel supply (11) and fitting (12) of fuel selector
valve (3).
(e)
Disconnect fuel return line (13) at fitting (14) of fuel return selector valve (15) and at fuel tank return
fitting (16). Drain line in suitable container.
(f)
Disconnect fuel return line (17) at fitting (18) of fuel return selector valve (15) and at fitting (19) of
auxiliary fuel discharge (20).
(g)
Disconnect fuel return line (21) at fitting (22) of fuel return selector valve (15). Disconnect other end of
fuel return line (21) at No. 1 engine injector fuel return (23) by removing banjo bolt (24) and seal
washers (25). Drain line in suitable container.
(2)
Remove fuel selector valves as follows:
(a)
If required, tag and disconnect fuel lines.
(b)
Remove screw (26) and handle (27).
(c)
Remove capscrews (28), lockwashers (29), and fuel selector valve (3 and/or 15) from enclosure panel.
2-68
