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
Solenoid Valve XV-901 Replacement:
Parts:
Solenoid Valve XV-901 (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 Solenoid Valve XV-901 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 3 assembly from the TWPS. Refer to REPLACE and Air
System Section 3 Assembly.
3. Remove the Solenoid Valve XV-901 from the Air System Section 3 assembly as follows (see
Figure 3):
a. Disconnect Solenoid Valve XV-901 at the cross connection.
b. Disconnect the two 1-in. to 3/4-in. reducer bushings and the two 3/4-in. close nipples from
Solenoid Valve XV-901.
c. Disconnect the 3/4-in., 90-degree elbow from the 3/4- in. close nipple that attaches to the
reducer bushings.
055 00-5
