TM 5-3825-229-14&P
5-19. WATER DISTRIBUTION PUMP (cont)
b. Disassembly (cont).
NOTE
Separation of lantern (9) and adapter (6) may require two personnel.
(4) Secure shaft (16) in a vise with brass jaws. Remove nut (14) and flat washer (15) from shaft. Use a suitable
puller and remove impeller (17) and key (18) from shaft.
(5) Remove four screws (12) and washers (13) and separate lantern (9) from adapter (6).
(6) Remove seal assembly (19), ceramic seat (20) and packing (21) from shaft.
(7) Remove slinger (22) from shaft (16). Remove six screws (23) and washers (24) and remove bearing cap (25)
from adapter.
(8) Remove retainer ring (26) and pull bearing (27) from shaft (16).
(9) Remove pipe plug (28) from pump inlet (30). Remove four screws (29) and separate pump inlet (30) from tank
(10).
(10) Remove two nuts (31), lockwashers (32) and screws (33) and separate lower weight (34) and stop plate (35)
from upper weight (36) and check valve (37).
(11) Remove diffuser (38) and gasket (39).
(12) Remove pipe plugs (40, 41 and 42) and bushing (43) from pump tank (10).
c. Cleaning, Inspection and Repair.
WARNING
Wear protective goggles when using the cleaning solvent. Avoid contact with the eyes. If contact
occurs, flush eyes with cold water for 5 minutes and seek immediate medical attention. Dry cleaning
solvent (PD-680) is both toxic and flammable. Avoid prolonged breathing of vapors. Avoid skin contact.
Use only in a well-ventilated area. Keep away from open flame. Flash point of solvent is 138°F (590C).
(1) Clean all metal parts of pump with cleaning solvent (PD-680) and dry thoroughly.
(2) Inspect seal assembly, ceramic seat and impeller for cracks, wear and damage.
(3) Inspect ball bearing for freedom of rotation and damage.
(4) Check splines on shaft for wear and damage.
(5) Inspect check valve for evidence of cracking. Flapper valve must be pliable and free to move.
(6) Check diffuser for cracked or damage veins.
(7) Replace all cracked, worn or damaged parts.
5-55
