1900 Series Horizontal Splitcase Pumps
Instruction and Repair Manual
29
11/12/18
II. Put a light coat of liquid dishwashing detergent on shaft sleeve. Check rotating parts of seal to make sure they
are clean. Spread a light coat of liquid detergent on inside diameters of flexible bellows and washer.
III. Place the seal’s spring, drive ring, retainer, flexible bellows, and washer on shaft sleeve in respective order.
(Refer to Fig. 3.)
IV. Thoroughly inspect cavity of seal gland (31) for burrs or nicks which could damage the seat of seal. Apply a film of
liquid detergent to seal seat and install it in the seal gland cavity, taking care to seat it evenly
and squarely.
NOTE:
If it is not possible to insert seat with fingers, place a cardboard protecting ring furnished with seal over the lapped
face of seat and press into place with a piece of tubing having end cut square. Tubing should be slightly larger than
the diameter of shaft. Remove cardboard after seat is firmly in place.
CAUTION:
Never place a mechanical seal into service after it has been used without replacing or relapping stationary seat and
washer faces.
V. Place O-rings (31A) around seal glands and slide seal glands onto ends of shaft.
b. Double Seal
I. Place one seal seat in collar (456B). The other fits into
seal gland (31). These parts are set into their cavities
in the same manner as they are with a single seal.
II. Place O-rings (456A) around collars (456B) and put the
collars with stationary seats facing away from impeller on
ends of shaft. Slide flexible bellows, washers, and springs
on shaft in the order shown in Figure 3, for
each half of double seal assembly (456).
III. Place O-rings (31A) around the seal glands (31) and
slide seal glands onto ends of the shaft with stationary seats facing impeller.
6. Place slinger (A126) onto outboard end of shaft (4).
7. Press grease seal (159A) into bearing cartridge (A158). Place outboard double row ball bearing (168) in bearing
cartridge and press parts onto outboard end shaft. Snap retainer ring (161) in place to secure outboard bearing.
Place gasket (159B) and cartridge cap (A159) in position and secure it with capscrews (159F).
NOTE:
Both grease zerk holes in bearing cartridges and pipe plug holes
in cartridge caps must be facing in opposite directions when
assembled.
8. Protector (118) can be placed in cartridge cap or if unit
has tandem shaft press a grease seal into cartridge cap and slide
a slinger onto shaft.
9. Place slinger (C126) in inboard end of shaft.
10. Press grease seal (159D) into bearing cartridge (B158). Place
inboard ball bearing (163) in bearing cartridge and press this
assembly onto inboard end of shaft.
H. Shaft sleeve and outboard impeller removed from shaft.
I. Casing bushing removed from impeller separator sleeve.
