Instruction Manual

OM−02818VG SERIES
MAINTENANCE & REPAIR PAGE E − 7
faces to ensure that they are free of any foreign
matter.
To ease installation of the seal, lubricate the shaft
sleeve, O-rings and bellows with water or a very
small amount of oil, and apply a drop of light lubri-
cating oil on the finished faces. Assemble the seal
as follows, (see Figure 2).
SPRING CENTERING
WASHER
SPRING
STATIONARY
ELEMENT
SEAL CAP
ROTATING
ELEMENT
RETAINER
SEAL
COLLAR
O-RING
A
BELLOWS
IMPELLER SHAFT
SHAFT SLEEVE
SEAL PLATE
SETSCREW
O-RING
Figure 2. 25271−098 Seal Assembly
This seal is not designed for operation at
temperatures above 160F (71C). Do not
use at higher operating temperatures.
Locate the collar (6) on the shaft sleeve at the
scribed mark or dimension taken before disassem-
bly, and secure with the setscrews (7).
NOTE
If the dimension is not known, slide the sleeve onto
the shaft until fully seated, and scribe the seal work-
ing length on the shaft (dimension A" shown in Fig-
ure 2). The designed working length (from the sta-
tionary seal face to the collar) for this seal is 2−7/8
inches (73,0 mm). Secure the collar on the sleeve at
this point with the setscrews.
Position the seal plate on a flat surface with the im-
peller side down. Position the sleeve in the seal
plate bore with the chamfered end facing up.
Slide the spring holder and spring over the sleeve
and against the collar. Assemble the drive grooves
of rotating element into the drive lugs of the bellows
retainer, and slide this rotating portion of the seal
over the sleeve until the retainer seats in the spring.
Use thumb pressure to press the stationary seat
and O-ring into the seal cap (16) until fully seated.
Slide the assembled stationary seat, seal cap and
gasket (8) over the shaft sleeve until the seal faces
contact and secure the seal cap to the seal plate
(11) with the nuts (44).
Install the sleeve gasket (5) completely against the
shaft shoulder. Be careful not to cut it on the impel-
ler keyway.