Figure 8. First Stage Valve Head Assembly Replacement.

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

Disconnect the flexible tube between the compressor first stage valve head assembly

and the crankcase demister.

d. Remove the three socket head screws holding the first stage valve head assembly to the

first stage piston cylinder.

e. Remove the first stage valve head, O-ring and intake valve plate.

f. Cover the piston cylinder to prevent dirt from entering the cylinder.

DOME NUT

STAGE VALVE HEAD ASSEMBLY

AF-1 ASSEMBLY CLAMP

DOME NUT GASKET

SET SCREW

SOCKET

VALVE HEAD

HEAD SCREW

FLEXIBLE TUBE

TO REMOVE

AF-1 ASSEMBLY

INTERCOOLER

TUBE TO REMOVE

VALVE HEAD

O-RING

INTAKE VALVE PLATE

INTERCOOLER

DEMISTER

ASSEMBLY

Figure 8. First Stage Valve Head Assembly Replacement.

4. Install the new first stage valve head assembly as follows (see Figure 8):

a. Place the intake valve plate and valve head O-ring into the valve seat of the piston

cylinder.

CAUTION

To avoid damage to the valve body, loosen the pressure valve set screw before

installing the valve head.

b. Remove the dome nut and dome nut gasket from the top of the valve head.

c. Loosen the first stage pressure valve set screw.

d. Apply silicone adhesive to the sealing surface of the valve head.

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