Goulds Pumps 3408A - IOM - Manual (Page 36)

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, vegetable oil, or
equal and slide the mechanical seal head onto the shaft.
Do not compress the seal spring at this time.
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3408A IOM 6/08