Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
TEST OR INSPECTION
FORMULATION TANK PRESSURE GREATER THAN 15 PSI (Continued)
Remove the pressure relief valve from the tee.
Insert the test pressure gage into the tee.
Start the engine and pressurize the tank.
BE SURE to open the pressure drain valve before replacing any parts.
If the test pressure gage and the tank pressure gage are equal, go to Step 1c (3).
If the test pressure gage and the tank pressure gage are not equal, replace the tank pressure
gage and go to Step 1c.
If the test pressure gage reads higher than 15 psi, replace the pressure regulator. Go to Step 1.