2-70. MOTOR (CHEMICAL FEED PUMP) MAINTENANCE.
This task consists of:
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
ROWPU shutdown (TM 10-4610-240-10).
Power shutdown (power source manual)
Chemical feed pump removed (para. 2-68)
Remove two mounting bolts (1).
Mark location of stator on housing before removing stator.
Lift stator (2) from rotor (3).
Rotor bearing is supported by pump housing and is sealed by
o-ring. Bearing fit may be tight. Move end of rotor back and
forth to loosen bearing and remove rotor.
Remove rotor (3) from housing (7).
Remove pin (6) and pull worm gear (5) from rotor (3).
Position worm gear (5) on rotor (3) and install pin (6).
To prevent damage to chemical feed pump, make sure worm
gear, rotor, and bearing are alined with housing before pushing
rotor in place.
Install rotor (3) on housing (7). Make sure bearing (4) is fully seated in o-ring (8).
Position stator (2) over rotor (3). Aline marks made during removal.
Install two mounting bolts (1).
Operate ROWPU (TM 10-4610-240-10). Check for proper operation of chemical feed pump.