ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0048 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
RAW WATER SYSTEM
NOTE
The pump must be taken apart to separate it from the motor. This is because the
impeller clearance must be set when the pump is installed on the new motor. The
seal seat, seal assembly, housing gasket, and drive sleeve will also be replaced.
Replace the P-2 Pump electric motor as follows (see Figure 9 and Figure 10):
1. Remove the pump motor as follows:
a. Disconnect the motor cable at the skid junction box.
b. Remove the six nuts that attach the pump housing to the adapter.
c. Loosen and remove the pump housing and gasket. Discard the gasket.
d. Remove the coupling clamp assembly.
COUPLER AND DUST CAP
IMPELLER
DRIVE SLEEVE ASSEMBLY
COUPLER AND DUST PLUG
PUMP HOUSING
NUT
CAP SCREW AND LOCK WASHER
ADAPTER
MOTOR
DRIVE SHAFT
SET SCREW
COUPLING CLAMP ASSEMBLY
Figure 9. Pump P-2 Electric Motor Replacement.
e. Carefully pry the drive sleeve off the motor drive shaft.
f. Remove the lock nut and drive sleeve from the impeller (see Figure 10). Discard the
sleeve and seal assembly. Attach the new sleeve to the impeller using the lock nut.
g. Lubricate inner diameter of the new seal assembly with glycerin. With the rubber boot
end toward the impeller, twist and slide the assembly onto the drive sleeve.
h. Remove the four cap screws and four lock washers that attach the motor to the adapter
and remove the motor.
i. Push the seal seat out of the adapter and discard it.
j. Clean the adapter bore and mounting faces.
k. Clean the new seal seat and lubricate it with glycerin. Insert the beveled end of the seal
seat into the adapter bore and press it into the adapter.
0048 00-13
