TM 55-2090-201-14&P
3-3. OPERATORS TROUBLESHOOTING PROCEDURES (Continued).
Table 3-2.
Operators Troubleshooting Chart for Oil-Water Separator,
Type A and B (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
Water discharge valve does not close when either of the solenoid
operated oil discharge valves open
Step 1.
Inspect for dirt or obstruction in solenoid valve.
Disassemble and clean valve per para-
graph 3-46.
Step 2.
Check for defective diodes (CR2 or CR3) on printed
circuit board.
Replace printed circuit board.
Refer to
paragraph 3-14.
Evacuate circuit board
to General Support Maintenance.
4.
Solenoid operated oil discharge valves remain open or open at same
time.
Step 1.
Test for defective mini-probe.
Refer to table 3-4
or 3-5, test procedures 2 and 3.
Replace defective mini-probe per para-
graph 3-24.
Step 2.
Inspect for dirt or obstruction in valve.
Disassemble and clean valve per para-
graph 3-24.
Step 3.
Check for defective diode (CR1) on printed circuit
board.
Replace printed circuit board.
Refer to
paragraph 3-14.
Evacuate circuit board
to General Support Maintenance.
5.
Electrically operated valves remain closed.
Step 1.
Check for loss of electric power.
Place auto control and supply pump
switches in ON position.
3-8
