Table 3-2. Operator Troubleshooting (Continued)

TM 5-3740-214-14

Table 3-2. Operator Troubleshooting (Continued)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

NOZZLE PRESSURE BELOW 90 PSI (Continued)

WARNING

DO NOT turn the solenoid valve switch ON while checking the nozzle assembly for air leaks.

CAUTION

DO NOT use tools to tighten the knurled ring. Tighten it by hand. Too much force will damage the

nozzle assembly.

DO NOT use too much force to tighten the fluid nozzle. Too much force will damage the teflon

gasket.

NOTE

The engine must be running to check for leaks around the nozzle assembly.

a. If the nozzle assembly parts listed above do not leak, notify your supervisor of

problem.

b. If any of the nozzle assembly parts listed above are loose, tighten them. If they

still leak, go to step 2d.

c. Shut the engine OFF before replacing any nozzle assembly parts.

d. If any of the nozzle assembly parts listed above still leak, remove them and

inspect them.

(1) If any of the machined surfaces are nicked or scratched, replace that part and

go to step 2e.

(2) If the teflon gasket is broken or squeezed out of shape, replace it and go to

step 2e.

(3) If the O-rings are cut or cracked, replace them and go to step 2e.

e. After replacing any parts above, start the engine and check pressure again.

(1) If the pressure is 90-100 psi, the problem is solved.

(2) If the pressure is still less than 90 psi, notify your supervisor.

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