TM 5-5420-202-20-2
FUEL BACKFLOW VALVE REPLACEMENT (Sheet 3 of 4)
Using pipe wrench, remove elbows (B) and
10.
(P) from fuel backflow valve (L).
Using pipe wrench (L), remove tee (Q) from
11.
fuel backflow valve (L).
Using adjustable wrench on tee (Q), use
12.
9/16 inch combination wrench to remove
reducer (G).
C L E A N I N G AND INSPECTION:
T o prevent personal injury, wear
Dry cleaning solvent P-D-680 is toxic and flammable.
protective goggles and gloves and use only in a well-ventilated area. Avoid contact with skin,
eyes, and clothes and don't breathe vapors. Do not use near open flame or excessive heat. The
flash point for Type #l Dry Cleaning Solvent is 100F (38C) and for Type #2 is 138F (50c).
If you become dizzy while using cleaning solvent, get fresh air immediately and get medical aid.
If contact with eyes is made, wash your eyes with water and get medical aid immediately.
1. Using clean cloth and solvent, clean fittings and mounting hardware thoroughly.
2. Inspect fittings and mounting hardware for nicks, cracks, wear or thread damage
Replace if required.
INSTALLATION:
NOTE
Coat threads of fittings with sealing com-
pound before installation.
Using pipe wrench, install elbows (A) and
1.
(B) to fuel backflow valve (C).
Using adjustable wrench, install tee (D)
2.
to fuel backflow valve (C).
Mount fuel backflow valve assembly (E)
3.
to bracket.
Go on to Sheet 4
