Crane BARNES STEP-DS Series, Installation And Operation Manual

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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 9)
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 10. 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 10).
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) firmly
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 9
FIGURE 12
FIGURE 13
Motor & Seal Plate
Bullet
Rotating Member
(28B)
Seal Pusher
FIGURE 11
Stationary Member
(28A) Polished Face Out
Seal Pusher
Seal Plate (5) or Seal
Housing (29).
FIGURE 10