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 TM 5-1940-277-20
TM 1940-20/2
NOTE
Remove tubing by section only as required.
Z
Use two quart liquid measure to collect fuel trapped in tubing.
Place two quart liquid measure under fitting where tubing is to be disconnected.
3.
4.
Use 5/8 inch open end wrench to loosen tubing nut
Remove nut and drain tubing.
5.
Repeat steps 4 thru 6 for fitting at other end of tubing.
6.
Use 7/16 inch open end wrench to loosen tubing nut on fuel return tubing.
7.
REPLACE:
NOTE
Tubing is not precut. Measure and cut tubing to length of tubing being replaced.
1.
Use tubing cutter to cut tubing.
2.
Put tubing nut (1) on tubing (2).
3.
Put tubing sleeve (3) about 1/2 inch from end of tubing.
Install end of tubing in fitting, seat tubing firmly.
4.
5.
Slide tubing nut (1) down on tubing sleeve (3) fitting.
Start tubing nut on fitting by hand, turn until hand tight.
6.
NOTE
When tubing nut is tightened with wrench it seats the tubing sleeve.
Use 5/8 inch open end wrench to tighten tubing nut on fuel supply tubing.
7.
Use 7/16 inch open end wrench to tighten tubing nut on fuel return tubing.
8.
Bleed fuel system (refer to paragraph 3-65).
9.
Close engine hatches.
10.
11.
Close battery hatch.
3-130
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