ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
MICRO-FILTRATION SYSTEM
MF Feed Pump P-3 Electric Motor Replacement:
Parts (TM 10-4610-309-24P):
P-3 Electric Motor Assembly
Seal Kit
Shaft Sleeve
Wear Ring
Materials:
Corrosion preventive compound (BII) (WP 0079, Table 1, item 17)
Glycerin (BII) (WP 0079, Table 1, item 21)
Sealing compound (WP 0079, Table 1, item 35)
Clean, dry rags (WP 0079, Table 1, item 33)
Equipment Condition:
MF Feed Pump Assembly P-3 removed from service
Replace the MF Feed Pump P-3 electric motor as follows:
1. Disconnect the electric motor cable at the P-3 skid junction box.
2. Remove the MF Feed Pump P-3 as follows (see Figure 5).
WARNING
Two-person lift. Two people are required to move the pump. Lift with your legs,
not your back. Failure to observe this warning can result in back injury.
a. Open the pump drain and drain the pump casing. Then close the drain.
b. Remove the eight cap screws that hold the pump casing to the adapter and pull the
casing off.
c. Remove and discard the pump casing gasket.
d. Remove the impeller screw. It may be necessary to hold the impeller using a strap
wrench or a pipe wrench to keep the impeller from turning while loosening the screw with
a socket wrench.
e. Remove and discard the screw gasket.
f. Ease the impeller off the shaft. If required, carefully pry the impeller off of the shaft.
g. Remove the spring and the impeller key.
h. Pull the shaft sleeve with the rotating parts of the mechanical seal off the shaft.
i. Lift the pump cover off the adapter. If required, carefully pry the cover off the adapter.
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