Crane DEMING 4507 Series, Installation, Operation & Maintenance Manual

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D - ASSEMBLY
1. Assemble motor support (19) and casing (1) to column
pipe (101). Setscrews (520) should not be turned too
tightly because casing will have to be turned later to
align fl oat rod (529).
2. For Type A, replace split cover plate (23). Setscrews
(542) should not be turned too tightly because cover
plate will have to be turned later to align fl oat rod (529)
and discharge pipe (161).
3. Place pump shaft (6) as a unit with lower half of
coupling (42), adjusting nut (66) and thrust bearing
(18) in place, thru motor support (19), column pipe
(101) and casing (1). Replace bearing snap ring (18).
4. Replace Woodruff key (32) and impeller (2) on shaft
(6). Tap impeller onto shaft taper. Replace impeller
washer (270) and tighten impeller nut (24).
5. Assemble suction head strainer (316) to casing (1).
Assemble base (53) to suction head strainer (316).
6. Place coupling spider on lower half of coupling.
Replace motor and top half of coupling on motor
support (19). Replace motor cap screws (219).
7. Replace discharge pipe. Attach fl oat switch (535) to
motor support (19). Install fl oat rod assembly. Loosen
setscrew (520) and turn casing (1) to align fl oat rod
(529) parallel to column pipe (101), If necessary turn
fl oat rod guide (527) to obtain proper fl oat rod
alignment. Tighten setscrews (520). Tighten setscrews
(542) (Type A only).
8. Check impeller adjustment. Shaft and impeller should
turn freely in casing. Connect motor wiring.