OM--05450
GHS SERIES
PAGE F -- 25
SEAL APPENDIX
Packing Seal Removal
(Figures F-1 and F-9)
The pump does not need to be disassembled to re-
move the packing seal.
Remove the gland locknut (D), capscrews and
gland retainers (07H) and split gland halves (07G).
Slide the split gland out of the backhead. Disen-
gage the hardware securing the split gland halves
together and remove the gland.
Use a stiff wire with a hooked end to remove the old
packing rings from the backhead. Make sure all of
the old packing is removed before installing the
new packing.
Packing Seal Installation
(Figures F-1 and F-9)
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent. Be sure to follow all safety
precautions described on the solvent container.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven-
tilated area free from flame, sparks, and
excessive heat. Read and follow all pre-
cautions printed on solvent containers.
To ease installation of the seal, lubricate the shaft
with a very
small
amount of non-detergent oil. Re-
fer to the illustrations and assemble the seal as fol-
lows.
NOTE
Packing kits include the correct number of rings
and spacers for each pump size,
in their appropri-
ate order
(See Figure 9A). For best performance,
keep rings and spacers in the order supplied in the
kit.
Lubricate the new packing rings with non-deterg-
ent oil before installation. For best performance, do
not stretch or separate packing braids. The seal is
equipped with split spacers, which must be
installed in the proper order.
Install the thick
spacer first
as shown in Figure 9A. Next,
install
the yellow packing ring
.
PUMP
PACKING RING/SPACER ORDER
SIZE
G,J,N,R,S
THK SPACER, YELLOW RING, BLK RING, THIN
SPACER, 2 BLK RINGS, THIN SPACER,
2 BLK RINGS.
T
THK SPACER, YELLOW RING, 2 BLK RINGS,
THIN SPACER, 2 BLK RINGS, THIN SPACER,
2 BLK RINGS
THICK
SPACER
YELLOW
PACKING
RING
BLACK
PACKING
RINGS
CAPSCREWS
THIN SPACER(S)
SPLIT GLAND
GLAND
LOCKNUTS
Figure F---9A. Typical Minimum Leak
Packing Seal Installation
As the packing rings are intstalled, push each ring
into the backhead and compress it using a blunt
ended sleeve (split in half, same diameter as the
split glands) and mallet. Install the remaining
spacers and packing rings in the order shown in
the illustration for your particular pump size. Each
successive packing layer must be compressed
and rotated by 90
_
to prevent excessive leakage.
When all packing rings and spacers have been
installed, position the split gland halves (07G) on
the shaft and install the gland retainers (07H) over
the ends of the split gland. Install the hardware (B
and D) and tighten in an alternating pattern until
the gland nuts begin to compress the packing.
Do not overtighten the gland nuts. If the
packing rings are compressed too tightly,
they may cause the shaft to overheat and
damage the pump.
Run the pump until it reaches its normal operating
temperature before adjusting the gland nuts. Do
not over-tighten the nuts. Tighten the nuts only
tight enough to reduce excessive leakage.
