25
E-2.2) Reassembly:
To install impeller (6), apply a thin film of oil to motor shaft
and slide impeller straight onto shaft, keeping keyways
lined up. Drive key (7) into keyway. Thread cap screw (8)
and washer (8A) into shaft and torque to 45 ft. lbs. Rotate
impeller to check for binding. Place o-ring (9) on seal plate
pilot diameter lining up holes and install impeller and motor
assembly onto volute (10). Loctite cap screws (2), insert
into volute and motor assembly and torque to 35 ft. lbs.
Check for free rotation of motor and impeller.
E-3) Outer Shaft Seal Service:
CAUTION ! - Handle seal parts with extreme
care. DO NOT scratch or mar lapped surfaces.
E-3.1) Disassembly and Inspection:
To expose outer shaft seal (4) for examination, remove
Impeller and Volute per Section E-2.1. Set motor assembly
(1) in the inverted position to prevent loss of oil. Remove
snap ring from motor shaft, then retaining ring (5), spring
(4C) and rotating member (4B) from shaft, See Figure
6. Examine all seal parts and especially contact faces.
Inspect seal for signs of wear such as uneven wear pattern
on stationary members, chips and scratches on either seal
face.
DO NOT
interchange seal components, replace the
entire shaft seal (4). If replacing seal, remove stationary
(4A) from mounting plate by prying out with flat screw
driver.
E-3.2) Reassembly:
Lightly oil
(DO NOT use grease)
outer surface of
stationary member (4A). Press stationary member (4A)
firmly into mounting plate using a seal pusher aligning seal
with pin, nothing but the seal pusher is to come in contact
with seal face (See Fig. 7).
Make sure the stationary member is in straight and that
the rubber ring is not out of it’s groove. Lightly oil
(DO NOT
use grease)
shaft and inner surface of bellows on rotating
member (4B) see Figure 8. With lapped surface of rotating
member (4B) facing inward toward stationary member (4A),
slide rotating member (4B) onto shaft using a seal pusher,
until lapped faces of (4A) and (4B) are together.
(See Fig. 8).
IMPORTANT ! - It is extremely important to keep seal
faces clean during assembly. dirt particles lodged
between these faces will cause the seal to leak.
Place spring (4C) over shaft and in place on
rotating member (4B), making sure it is seated on
retainer and not cocked or resting on bellows tail. Slide
retaining ring (5) over shaft and let rest on spring (4C).
Replace snap ring onto motor shaft. Inspect gasket (9) and
replace if cut or damaged. Assemble impeller and volute as
outlined in paragraph E-2.2.
FIGURE 7
Stationary Member (4A) Pol-
ished Face Out
Motor Mounting Plate
Seal Pusher
FIGURE 8
Rotating Member (4B)
Bullet
Motor
Seal Pusher
Stationary
FIGURE 6
Summary of Contents for 3SHV
Page 29: ...29 FIGURE 10 SH Pump Series Cross Sections Before March 2016 FIGURE 11 SH Vortex SH Enclosed ...
Page 30: ...30 FIGURE 12 SH Enclosed Pump Series Exploded Views Before March 2016 ...
Page 33: ...33 FIGURE 13 SH Pump Series Cross Sections After March 2016 FIGURE 14 SH Vortex SH Enclosed ...
Page 34: ...34 FIGURE 15 SH Enclosed Pump Series Exploded Views After March 2016 ...
Page 59: ...Notes ...
Page 60: ...Notes ...