Table 4-18. Water Closet Vacuum Dispensing Valve Troubleshooting

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Table 4-17. Water Closet Gravity Timer Malfunction Troubleshooting.

TM-55-1905-220-14-8 Landing Craft Utility LCU 1671-1679 NSN 1905-01-009-1056 Manual

Table 4-19. Water Closet Water Dispensing Valve Troubleshooting

TM 55-1905-220-14-8

4-5. GENERAL (Continued).

Table 4-18. Water Closet Vacuum Dispensing Valve

Troubleshooting.

NOTE

Refer to paragraph 4-15 for maintenance instructions.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Vacuum dispensing valve will not activate.

Step 1. No supply or low vacuum.

Check vacuum pressure gage at collection tank.

Step 2. Ruptured diaphragm.

Replace valve tank.

Step 3. Not receiving vacuum from gravity timer.

See Gravity Timer Troubleshooting guide.

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