Crane Barnes DS Series, Installation And Operation Manual

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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
Figure 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 flat
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)
firmly into inner seal plate (5), using a seal pusher. 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
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).
FIGURE 8 - Jam nut (66) used with cast
iron impeller (33) application
Rotating Member
(28B)
Motor & Seal Plate
Bullet
Seal Pusher
FIGURE 10
FIGURE 9
Seal Pusher
Seal Plate (5) for L series
and (29) for DS series
Stationary Member
(28A) Polished Face Out
FIGURE 6
FIGURE 6
FIGURE 7 -
Jam nut (66) used with cast
iron impeller (33) application