ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0055 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
AIR SYSTEM, REDUCED PRESSURE
3. Install the new Solenoid Valve XV-902 as follows:
a. Thread the two close nipples onto the solenoid valve hand tight.
b. Thread the reducer bushing into the input side of Check Valve V-908 and tighten.
c. Thread the close nipple on the output side of the solenoid valve into the reducer bushing.
Do not over-tighten. Refer to Figure 8 for correct positioning of the valve.
d. Thread the elbow onto the close nipple on the other end of the solenoid valve. Do not
over-tighten. Refer to Figure 8 for correct positioning of the elbow.
4. Install the Air System Section 4 assembly onto the TWPS. Refer to REPLACE and Air System
Section 4 Assembly.
5. Check the new Solenoid Valve XV-902 and attached piping for leaks.
Check Valve V-908 Replacement:
Parts:
Check Valve V-908 (TM 10-4610-309-24P)
Material:
Tape, antiseizing (WP 0079, Table 1, item 43, 44)
Equipment Condition:
TWPS in Standby Shutdown Without Draining Down
Army: Generator off and TWPS main breaker off
Marine Corps: TWPS disconnected from power source
Entire air system bled down
WARNING
The TWPS must be in Shutdown and the TQG and TWPS main breaker must be off
(Army) or the TWPS disconnected from its power source (Marine Corps) prior to
performing maintenance on the TWPS Air System. Failure to observe this warning
can result in injury to personnel and damage to equipment.
High pressure. The air system contains air pressure up to 1800 psig. The air
system must be bled prior to performing maintenance on components of the air
system. Failure to observe this warning can result in injury to personnel and
damage to equipment.
Replace Check Valve V-908 as follows:
1. Make sure the air system has been bled down. Refer to ENTIRE AIR SYSTEM BLEED DOWN.
2. Remove the Air System Section 4 assembly from the TWPS. Refer to REPLACE and Air
System Section 4 Assembly.
3. Remove Check Valve V-908 from the air system section 4 assembly as follows (see Figure 9):
a. Disconnect Check Valve V-908 from the reducer bushings at the ends of the check valve.
b. Remove the close nipple from the check valve.
055 00-14
