Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
TEST OR INSPECTION
FORMULATION TANK WILL NOT HOLD PRESSURE (Continued)
Open the pressure drain valve.
If the filter body is cross threaded and does not seal correctly, unscrew it.
Check the filter gasket.
If the gasket is broken, cracked or swelled, replace it and go to Step 7d.
If the gasket is ok, go to Step 7d.
Reassemble the filter and pressurize the tank. Make sure the gasket is set evenly in place before
tightening the filter body.
If the filter still leaks, replace it and go to Step 1.
If the filter does not leak, the problem is solved. Go to Step 1.
FORMULATION TANK PRESSURE GREATER THAN 15 PSI
Test the pressure regulator and tank pressure gage. Use a test pressure gage.
Figure 5-204. Pressure Gage Installation