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
c.
If replacing the thrust bearing, clean the new thrust bearing in fresh water and install it in
the bearing plate (see Figure 19).
NOTE
Ensure that the counter bore hole or flat side of the thrust bearing engages the
alignment pin (protruding from the groove in the plate). The thrust bearing should
lie flat against the bottom of the groove in the bearing plate.
SPACER
O-RING
THRUST BEARING
BEARING PLATE
Figure 19. Thrust Bearing and Spacer Installation.
NOTE
Make sure a new O-ring is mounted between the spacer and the bearing plate.
d. Install the spacer onto the bearing plate (see Figure 19).
e. Lubricate all bearing surfaces with glycerin before assembly.
f. Inspect and (if necessary) replace the cam as follows (see Figure 20):
NOTE
The corrosion-resistant cam upper and lower surfaces and shafts run against
bearings lubricated by the pumped fluid and are highly polished. For the pump to
operate properly, the cam upper and lower surfaces and shaft surfaces must be
free from scratches, nicks, or dents. Use caution when handling the cam so as not
to scratch or damage any of the bearing surfaces. Some light scoring or wear on
these surfaces is acceptable.
1) Inspect for scoring or corrosion on both the upper angled and lower flat cam
surfaces and on the shafts. Replace as needed.
2) Check the journal bearing surfaces on both ends of the cam. Replace the cam if
the surfaces have been scored or corroded.
0053 00-17
