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
THRUST BEARING
BEARING PLATE BEARING
MOUNTING FLANGE
BEARING PLATE
Figure 26. Bearing Plate and Thrust Bearing Setup.
10. Inspect and (if necessary) replace the cam as follows (see Figure 27):
NOTE
The corrosion-resistant cam upper and lower surfaces and shaft run against
bearings lubricated by the pumped fluid and are highly polished. For the pump to
operate properly, the cam upper and lower faces 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.
a. Inspect for scoring or corrosion on both the upper angled and lower flat cam surfaces and
on the shafts. Replace as needed.
b. Check the journal bearing surfaces on both ends of the cam. Replace the cam if the
surfaces have been scored or corroded.
c. Clean and rinse the cam thoroughly with fresh water before reinstalling.
d. Inspect the keyway and remove any dirt, sharp edges, or nicks that could damage the
shaft seal at installation.
HPP CAM
CAM
KEYWAY
SEAL SURFACE
Figure 27. HPP Cam Inspection and Installation.
0053 00-24
