ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
AIR COMPRESSOR
4. Inspect the area of the compressor housing where the oil pump mounts to ensure the entire
gasket is removed and the area is clean.
5. Install the oil pump as follows:
a. Install the new oil pump and gasket to the compressor with the three cap screws.
b. Install the oil supply tubing.
c. Install the air compressor. Refer to REPLACE and Air Compressor.
6. Check the compressor oil level and add oil as necessary.
7. Install the pressure gauge on the oil pressure regulator gauge port (see Figure 4).
8. Start the compressor and check the new oil pump for leaks and proper oil pressure.
9. If no or low oil pressure builds up, vent the oil pump. Refer to SERVICE and Bleed the
Lubrication System.
10. If necessary, adjust the oil pressure regulator. Refer to REPLACE and Oil Pressure
Regulating Valve.
First Stage Valve Head Assembly Replacement:
Parts (TM 10-4610-309-24P):
First Stage Valve Head Assembly
Materials:
Adhesive, silicone (WP 0079, Table 1, item 1)
Equipment Condition:
TWPS in Standby Shutdown Without Draining Down
Army TWPS: Generator off and TWPS main breaker off
Marine Corps TWPS: TWPS disconnected from power source
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 Compressor. 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 high
pressure air system must be bled prior to removing the 1st stage valve head
assembly. Failure to observe this warning can result in injury to personnel and
damage to equipment.
Replace the first stage valve head assembly as follows:
1. Make sure that electrical power to the TWPS has been shut off.
2. Make sure the high-pressure air system has been bled down. Refer to High-Pressure Air
System Bleed Down Procedures.
3. Remove the first stage valve head assembly as follows (see Figure 8):
a. Loosen the clamp that secures the Air Intake Filter AF-1 Assembly to the first stage head
and remove the assembly and clamp.
b. Disconnect the intercooler assembly tube from the compressor first stage head valve
assembly.
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