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
i.
Continue to rotate the speedball handle clockwise until the reaction plate stops against
the cam side of the piston body.
j.
Remove the tool from the new bearing.
k.
Carefully clean and rinse all components with fresh water before reinstalling in the pump.
REACTION PLATE
SPEEDBALL HANDLE
PISTON BODY
CAM SIDE
PILOT PLUG
TENSION ROD
ADAPTER CAN
WRENCH FLATS
NEW BEARING
NEW BEARING
Figure 32. High Pressure Pump Body Bearing Installation.
NOTE
Make sure the key way is accessible through the pump shaft coupling cover plate.
17. Check for bad piston seals by performing the following water hold test:
a. Place the pistons into the body and push them down into their cylinders.
b. Hold the body up off the surface of the work area.
c. Pour water into the top of the cylinders.
d. If water flows through any of the cylinders and out the bottom, replace the piston in the
cylinder with the leak.
e. Repeat the test. If water still leaks through a cylinder, replace the cylinder as described
earlier in this work package.
18. Install the body as follows:
a. Make sure all cylinder liners and O-rings are installed into the body.
b. Sighting through an the open cylinder liners, make sure the liners are aligned directly
above the piston cluster cups.
c. Place the body onto the spacer.
d. Install the new O-ring between the spacer and the body outer area.
O-RING
PISTON BODY
O-RING
SPACER
ALIGNMENT PIN
Figure 33. Piston Body Installation.
0053 00-29
