TM 10-4610-309-14
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
OCEAN INTAKE STRUCTURE SYSTEM (OISS)
THIS SECTION COVERS:
Replace
INITIAL SETUP:
Maintenance Level
Unit
Tools
Army: General Mechanic's Tool Kit (WP 0075)
Marine Corps: Common No. 1 Tool Set (WP 0075)
Parts (TM 10-4610-309-24P):
Backwash valve assembly
Wellpoint pipe (TM 10-4610-309-24P)
1.5 x .45 x 60 stainless steel pipe
1.5 x .45 x 24 stainless steel pipe
1.5 NPT stainless steel coupling
2.0 90-degree stainless steel elbow pipe assembly
OISS suction hose assembly
2.0 stainless steel threaded straight tee pipe assembly
3.0 stainless steel tee pipe assembly
Material:
Antiseizing tape (WP 0079, Table 1, item 30)
Personnel Required
One
Equipment Condition
OISS removed from service
GENERAL:
This procedure contains information and instructions for replacing components in the Ocean Intake
Structure System (OISS) of the TWPS. If you are unable to return a component or assembly to
workable condition by following the repair procedure, notify Unit Maintenance (UM).
REPLACE
Inspect each of the components of the Ocean Intake Structure System for damage that can prevent it
from functioning properly and replace if necessary (see Figure 1).
Replace damaged threaded OISS components as follows:
1. Unthread the damaged threaded component from the undamaged component.
2. Discard the damaged component.
3. Clean the threads of the undamaged component using a wire brush.
4. Install pipe tape on the male threads of the components to be connected as described in General
Operator Maintenance Procedures WP 0045 00.
5. Thread the female and taped male pipe sections together.
0049 00-1
