ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0053 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
HIGH PRESSURE PUMPS
10. Mount the valve housing onto the piston body (see Figure 12).
NOTE
Alignment pins on the piston body help align the valve housing to the body.
PISTON BODY
VALVE HOUSING
PISTON BODY
ALIGNMENT PIN
Figure 12. Valve Housing Assembly Installation.
11. Inspect and (if necessary) replace the manifold (see Figure 13).
NOTE
The manifold permits fluid transfer from the inlet port to the valves and again from
the valves to the outlet port. The inner of the two manifold channels carries high-
pressure fluid to the outlet port from the check valves. The outer channel carries
low-pressure fluid from the inlet port to the check valves.
a.
Inspect all ports, fittings, and threads for deterioration or damage.
b.
Remove and discard O-rings.
c.
Inspect all O-ring grooves for scratches, deterioration, or signs of leakage.
d.
Inspect the manifold channels. If any de-lamination or structural cracks are present on
the manifold's channels (annular grooves), O-ring grooves, or ports, the manifold must be
replaced.
e. Inspect inlet and outlet nipples for damage, wear, or corrosion. Replace as needed.
f. Install new O-rings.
INLET PORT
BOTTOM OF MANIFOLD
OUTLET NIPPLE
INNER O-RING
INLET NIPPLE
CENTER O-RING
HPP MANIFOLD
OUTER O-RING
OUTLET PORT
Figure 13. HPP Manifold Inspection.
0053 00-12
