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TM 9-2815-220-24
FUEL BACKFLOW VALVE AND RELATED PARTS REPLACEMENT
0046 00
Test (Continued)
2. Check by-pass function of valve (1).
a. Remove hose (5) and cap off side leg of tee (6).
b. Remove hose (7) and cap off inlet fitting (4).
c. Provide fuel into valve at bottom leg of tee (6) and gradually increase pressure.
(1) Fuel should not flow from outlet fitting (3) until pressure reaches 85-95 psi.
(2) Fuel should flow freely from outlet fitting (3) between 85-95 psi.
3. Check backflow function of valve (1).
a. Remove cap from inlet fitting (4) and install it on outlet fitting (3).
b. Provide fuel into valve at bottom leg of tee (6) and gradually increase pressure to 100 psi.
c. There should be no fuel flow out of valve at inlet fitting (4).
4. If valve fails any one of the three checks, return it to depot for repair.
1
4
7
3
2
5
6
END OF WORK PACKAGE
WP 0046 00-2

 


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