TM 55-2815-574-24
0023
PERFORM FUEL FLOW TEST - Continued
CORRECTIVE ACTION - Continued
Figure 1. A3 Breaker Switch.
3.
Place a drain pan under fuel return line (Figure 2, Item 1).
4.
Disconnect fuel return line (Figure 2, Item 1) at ball valve (Figure 2, Item 2).
Figure 2. Fuel Lines.
5.
Install restriction elbow (Figure 3, Item 3) on end of fuel return line (Figure 3, Item 1).
6.
Place end of fuel return line (Figure 3, Item 1) in a clean 5-gallon utility pail (Figure 3, Item 2).
7.
Start engine (TM 55-1925-205-10).
8.
Quickly raise engine to 1800 RPMs and run for one minute.
9.
Watch the fuel for bubbles.
10.
Shut engine down (TM 55-1925-205-10).
NOTE
Air bubbles present in fuel indicate a leak on suction side of pump.