Xylem GOULDS AC8743, Инструкция по эксплуатации

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Figure 15: Removing bearing and gland plate
using universal fixture
Figure 16: Gland plate and bearing removed
from stuffing box
8. Remove the mechanical seal head from the
pump shaft.
NOTE: To ease in the removal of the mechanical
seal heads, you may want to use 2 Allen wrenches
as hooks or form hooks from wire.
9. Drive the lip-seals, the mechanical seal seats,
from each of the gland plates by tapping on
them from the rear.
10. Remove the O-rings from each of the gland
plates.
ASSEMBLING MECHANICAL SEALS AND
BEARINGS
(without removing the upper half of the casing)
NOTE:
All bearings, O-rings, and lip-seals should
be replaced with new parts during assembly. All
usable parts should be cleaned of foreign matter
before reassembly.
NOTE: Reassemble the pump by starting on the
outboard end (the end opposite the coupling). This
end locks the rotating element into position in the
casing.
1. Press the stationary mechanical seal seat into
the gland plate until it bottoms out against the
bore. Lightly lubricate the bore to ease
assembly. See Figure 17.
Figure 17: Assembling mechanical seal seat
into gland plate
2. Press a new lip seal into the gland plate.
Before installing the lip seal, lubricate the lip-
seal with lightweight oil.
NOTE:
Lip seals should sit against machined
shoulder in the gland plate. The lip seal should
face away from the mechanical seal seat. See
Figure 18.
Figure 18: Assembling lip seal into the gland
plate
3. Lubricate and roll the O-ring into the groove in
the gland plate.
IMPORTANT:
Steps 4 and 5 must be completed
within 10 to 12 minutes to assure proper
placement of the mechanical seals.
4. Lightly coat the outboard end of the pump
shaft with P-80 Rubber Lubricant Emulsion,