b. When replacing O-rings, make sure all surfaces are clean and free of dirt, grit, or foreign material.Prior to
Installation, apply a thin coat of silicone grease to O-ring for ease of assembly Protect O-rings by applying
tape over threads, sharp corners, and edges.
c. When replacing gaskets, make sure mating surfaces are clean and free of old gasket material, adhesive, oil, or
grease These precautions will ensure a leak-proof joint.
Be sure electrical power is off before performing maintenance. Open (OFF) circuit breakers. Redtag circuit breakers or
motor controller with: WARNING DO NOT ACTIVATE REPAIRS BEING MADE. Observe safety precautions In this TM
and those specified in manufacturers' manuals and instructions.
d. When replacing electrical components, follow proper procedures for soldering or crimping connections Check
all grounding Make sure current carrying members are properly insulated to avoid short-circuiting Check wire
and cable insulation for abrasions and chafing Repair with tape or replace as necessary.
Due to this vessel's mission and crew capabilities, maintenance normally assigned to organizational level or higher
echelons of maintenance may be assigned to the crew.
4-7. Drinking water system. Lubrication and repair procedures of the drinking water system are presented herein
Shut down drinking water system before attempting any repairs. Be sure to open circuit breakers. Redtag circuit breakers
with: WARNING-- DO NOT ACTIVATE. REPAIRS BEING MADE. Be sure pumps are cool before starting repairs.
Lubricate discharge pump as given In Aurora Pumps Instruction Manual In Appendix B
Drinking water fountain and sink data, including maintenance, is given In TM 55-1930-209-14&P-15.
4-7.2. Repair or replacement of system components
4-7.2.1. Discharge pump assembly
Make sure shore discharge pump motor controller is electrically dead before starting removal. Redtag motor controller
with: WARNING DO NOT ACTIVATE REPAIRS BEING MADE.
(1) Make sure shore discharge pump motor controller Is electrically dead
(a) Open (OFF) switchboard circuit breaker P9 for pump 1 or P15 for pump 2
(b) On motor controller for pump being removed, open main switch (Figure 3-1) and redtag controller with
WARNING DO NOT ACTIVATE REPAIRS BEING MADE.
(2) On Barge 1, position drinking water valve DW1 2 to Isolate discharge pump being removed On Barges 2 and
3, close valve DW12 to Isolate discharge pump 1. Close valve DW18 to isolate discharge pump 2.
(3) Place container under piping and disconnect piping Seat pipe connections to prevent foreign materials from