3-3. TROUBLESHOOTING - continued.
TEST OR INSPECTION
Refer to figure 3-3.
3. Pressure relief valve (1) opens.
Check see if relief valve been adjusted.
Step 1. If seal (2) has been tampered with or broken, shutdown system pump and notify unit maintenance.
Check fuel discharge pressure at system pump.
Step 1. If pressure is over 150 psig, lower system pump discharge pressure to 150 psig.
Step 2. If pressure is less than 150 psig., shutdown system pump and notify unit maintenance.
Figure 3-3. Malfunction3 Pressure Relief Valve.