What was found
CREW REPORTS NO WATER PRESSURE THROUGHOUT ACFT. POTABLE WATER FILL VALVE LEAKING AIR IN CLOSED POSITION. CONTROL ROD DISCONNECTED FROM VALVE. REPLACED BORROWED WATER FILL VALVE IN AFT PIT, NO HELP. FOUND WATER SYS AIR COMPRESSOR INOP. REPLACED POTABLE WATER SYS AIR COMPRESSOR IAW MM. PRESSURIZE THE POTABLE WATER SYS, AIR COMPRESSOR WILL NOT STOP RUNNING. FOUND DAMAGED LINE ON AIR COMPRESSOR. REPLACED LINE, NO HELP. CB FOR COMPRESSOR PULLED AND COLLARED. AIR SUPPLY LINE AT TOP OF WATER TANK BLOCKED. TEMP LINE INSTALLED. REPLACED AIR SUPPLY LINE ON TOP OF AIR TANK. INSTALLED AIR LINE. WATER SYS OPS NORMAL.