TM 10-4610-240-24
TM O8580C-24/2
TO 40W4-13-22
3-5.
CENTRIFUGAL PUMP ( BACKWASH PUMP) MAINTENANCE - continued.
INSPECTION.
Inspect pump case (17), impeller wear ring (13), and adapter (5) for cracks, damage, and excessive wear.
REPAIR.
Replace all damaged components
ASSEMBLY.
a. Position splash plate (2) and adapter (5) on shaft of motor (1) and install four screws (6)
b. Install slinger (3) on motor shaft (1).
c.
Install cover (7) on adapter (5).
d. Install new seal assembly (8) on motor shaft (1) as noted during disassembly
e. Install impeller (10) and key (9) on shaft of motor (1)
f.
Install new gasket (11) and using locktite install impeller retaining screw (12).
CAUTION
Wear ring must be installed in exact alinement with seat in case. If incorrectly alined, pump case
may be damaged.
g. Position new wear ring (13) in pump case (17) Using arbor press, press wear ring into place.
h. Install new pump case gasket (14)
i.
Position pump case (17) in place and install eight screws (4) as noted
j.
Install primer plug (15), vent plug (16), and drain cock (18).
3-80
