Goulds Pumps 3410 - IOM - Manual (Page 29)

SHAFT SEALING PACKING
Packing
!
Packed stuffing boxes are not allowed in an ATEX
classified environment.
1. Before packing stuffing box, make sure box is clean
and contains no foreign material.
2. Install gland studs into the casing if not already
installed.
3. Stuffing box packing furnished in box of fittings
which accompanies pump. When packing stuffing box
arrangement of packing and lantern rings is: two
packing rings, lantern ring; then last three packing
rings, as shown in Fig. 16.
4. Twist packing ring sideways just enough to get it
around shaft or sleeve (Fig. 17).
5. Two-piece Teflon lantern rings are supplied in all
3410s. Twist lantern ring halves just enough to get it
around shaft sleeve as shown in Fig. 18.
NOTE: Two pieces make one ring. Notches must face
one another but need not be aligned.
6. To pack stuffing box, install packing and lantern ring
in proper sequence. Each ring should be installed
separately. Firmly seat each ring. Use stuffing box
gland to push packing and lantern ring into box,
Fig. 19. Stagger joints in each ring 90 degrees. Make
sure center of lantern ring lines up with flush tap in
stuffing box. Any extra rings are spares.
7. Hand-tighten gland nuts evenly but not tight.
Removal of Packing
To remove packing from stuffing box, proceed as follows:
1. Remove gland assembly.
2. Remove packing with a packing hook.
3. Remove lantern ring by inserting a wire hook into
ring on outer edge.
4. Clean stuffing box.
An alternate method of removing packing is to remove
upper half casing (see Disassembly & Reassembly section.)
Remove packing and lantern ring and inspect sleeves
and/or shaft. Replace sleeves or shaft if deeply grooved.
3410 IOM 1/2010
27
Fig. 16
Fig. 17
Fig. 18
Fig. 19
4