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11
FIGURE 8
Inner Seal (DS Units Only)- To expose inner shaft seal
(28) for examination, remove outer seal as outlined above.
Remove socket head cap screws (64). Lift outer seal plate (29)
and square-ring (27) from inner seal plate (5), See Figures 6 &
7. If further repair is required, remove snap ring (32), retaining
ring (28d), spring (28c) and rotating member (28b) from shaft.
Examine as outlined in outer seal paragraph. If replacing seal,
remove stationary (28a) by prying out with fl at screwdriver.
F-3.2) Reassembly:
Inner Seal (DS Units Only)- Clean and oil seal cavities in seal
plates (5, 29). Lightly oil (DO NOT use grease) outer surface
of stationary member (28a). Press stationary member (28a)
fi rmly into inner seal plate (5), using a seal pusher (see parts
list - seal tool kit). Nothing but the seal pusher is to come in
contact with seal face (see Figure 8).
Important ! - DO NOT hammer on the seal pusher-
it will damage the seal face.
Make sure the stationary member is in straight. Slide a bullet
(see parts list - seal tool kit) over motor shaft. Lightly oil (DO NOT
use grease) shaft, bullet and inner surface of bellows on rotating
member (28b), see Figure 9. With lapped surface of rotating
member (28b) facing inward toward stationary member, slide
rotating member over bullet and onto shaft, using seal pusher,
until lapped faces of (28a) and (28b) are together (see Figure 8).
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 (28c) over shaft and in place on
rotating member (28b), making sure it is seated on retainer and
not cocked or resting on bellows tail. Slide retaining ring (28d)
over shaft and let rest on spring (28c). Replace snap ring (32)
in groove of shaft. Set square-ring (27) in groove on outer seal
plate (29) and place outer seal plate (29) onto inner seal plate
(5). Replace socket head cap screws (64) and torque to 60 in-lbs.
Outer Seal (All Units) - Press stationary member (28a) fi rmly
into outer seal plate (5, or 29 on DS Units) as described
above. Slide rotating member (28b) onto stationary member
using seal pusher as described above. Place spring (28c) and
retaining ring (28d) onto rotating member (28b). Assemble
impeller and volute as outlined in paragraph F-2.2. Replace oil
as outlined in paragraph F-1.4.
F-4) Motor and Bearing Service:
F-4.1) Disassembly and Inspection:
To examine or replace the motor (7), capacitor (9, single
phase units), controls (56, optional), and bearing (25), drain
oil from motor as outlined in paragraph F-1.1. Disassemble
volute and impeller as outlined in paragraph F-2.1 and
disassemble shaft seal as outlined in paragraph F-3.1.
FIGURE 7
FIGURE 6
Rotating Member
(28B)
Motor & Seal Plate
Bullet
Seal Pusher
FIGURE 9
Seal Pusher
Seal Plate (5) for L series
and (29) for DS series
Stationary Member
(28A) Polished Face Out
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