9
FIGURE 3
Motor -
Slide lower bearing (47) and motor rotor squarely into
the bearing bracket (21) until bearing seats on the bottom.
Position motor housing and stator into pilot, install bellville
washers and shims (9) and (29) in upper end bell. Position
upper motor end bell aligning holes and thread cap screws
into bearing bracket (21). Torque to 16 ft. lb.. Place all motor
leads above the motor. Position square ring (42) over bearing
bracket (21) and lower housing (2) over motor and into pilot,
being sure to orient motor housing handle parallel to motor end
bell reliefs. Apply thread locking compound to cap screws (19)
threads and install with nut (20).Torque to 24 ft. lb.
F-3.3) Checking Of End-Play:
Measure distance with micrometer from the top surface of the
motor cover to the end of the shaft. See Figure 3. Temporarily
set the partially assembled unit on the lower end of the shaft,
causing the bearings to slide up in the bearing retainer. When
the bearings bottom securely, again measure the distance
from the top surface of the motor cover to the end of the shaft.
This difference should be between .015 to .030 inches. If the
end-play is within these tolerances, proceed with reassembly. If
the end-play is not within the above listed tolerances, the motor
upper end bell must be disassembled and suffi cient .010 shims
(9) must be added or removed as required. Reassemble and
recheck again for the required listed end-play tolerance.
F-4) Shaft Seal and Diaphragm Service:
Important! - Handle seal parts with extreme care.
do not scratch or mar lapped surfaces.
F-4.1) Disassembly and Inspection:
Diaphragm -
To examine or replace the diaphragm (32) or
shaft seal (46), remove impeller (28) as outlined in paragraph
F-2.1. Drain oil from seal chamber as outlined in paragraph
F-1.3. Remove cap screws (8) and lifting strap (7). Set unit
upside down on blocks to avoid damaging cords. Remove
socket head cap screws (39) and lift seal plate (25) vertically,
being cautious to avoid seal damage, together with diaphragm
(32), clamp (43) and outboard stationary member (46A) of
shaft seal (46), from bearing bracket (21). Examine diaphragm
(32), if it is ruptured, cracked or damaged, replace by removing
screws (44) and diaphragm clamp (43), Also, clean out vent
holes in seal plate (25). Check moisture sensor probes (18) (if
equipped) for damage. Replace by disconnecting wires (16)
by removing screws (14) and lockwashers (15). Then remove
probe (18) from bearing bracket (21).
FIGURE 4
FIGURE 5
