ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
HIGH PRESSURE PUMPS
3) Clean and rinse the cam thoroughly with fresh water before reinstalling.
4) 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 20. HPP Cam Inspection and Installation.
g. Install the cam as follows (see Figure 20):
1) Carefully rinse the cam with clean fresh water.
2) Apply glycerin to the cam seal surface.
CAUTION
Care is required when installing the cam to prevent damage to the shaft seal. Do
not pierce or damage the shaft seal in any way. Make sure the key way faces the
opening in the flange when the cam is installed. Failure to observe this caution
may result in damage to the shaft seal causing it to leak during operation.
3) Slide the camshaft through the bearing plate and the shaft seal.
6. Perform the 1000-Hour PMCS procedures. Refer to SERVICE and 1000-Hour High Pressure
Pump PMCS.
7. Install the high-pressure pump onto the motor. Refer to High Pressure Pump or Motor
Replacement.
8. Install the high-pressure pump assembly onto the TWPS. Refer to High Pressure Pump
Assembly Replacement.
CAUTION
Failure to follow the break-in procedure listed below may cause premature failure
of the cam, thrust cluster, or tilt pad bearings or it may result in excessive power
consumption by the pump.
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