OM-05450
GHS SERIES
PAGE F - 25
SEAL APPENDIX
Packing Seal Removal
(Figures F‐1 and F‐9)
If the pump is equipped with a split packing gland
(07G) the pump does not need to be disassembled
to remove the packing seal.
Loosen the gland locknut (D) and remove the
gland retainers (07H) and split gland halves (07G).
If the pump is equipped with a one‐piece packing
gland (07G), see
PUMP DISASSEMBLY
and dis
assemble the pump up to and including the
Rotor
Adjusting Sleeve (07)
.
Use a stiff wire with a hooked end to remove the
packing rings and lantern ring from the backhead
(06AA). Make sure all of the old packing is removed
before installing the new packing.
Consult the factory before attempting to separate
the seat sleeve and shaft bushing sleeve.
Packing Seal Installation
(Figures F‐1 and F‐9)
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent.
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.
NOTE
It is recommended that replacement packing rings
pre‐cut to the correct width and length and pack
aged in sets (see the Parts List accompanying your
pump) be ordered from your Gorman‐Rupp distrib
utor or the factory. However, if bulk commercial
packing will be used, prepare and install it in accor
dance with the steps outlined below in order to en
sure that the packing will form a tight seal.
Figure F‐9A.
Step 1:
Determine how much bulk packing will be
required to fill the seal cavity and wrap it around a
rod the same diameter as the shaft. With the pack
ing wrapped around the rod, cut through each turn
as shown in Figure F‐9A.
If the cut rings are too thick and will not fit in the
packing cavity, place each turn on a clean piece of
paper and use a length of pipe to roll the ring until
the thickness has been reduced.
Never
attempt to
flatten a packing ring with a hammer.
Right
Wrong
Figure F‐9B.
Step 2:
It is critical that the ends of the cut packing
ring meet in a tight parallel fit to ensure proper seal
ing. Check this fit; it should be correct if the packing
was cut while wrapped around a rod, but if the
packing was cut while laid out straight the ends will
meet at an angle.
Never
install packing rings with
an angled gap; pressure on adjacent packing
rings will cause them to work into the gap and pre
vent the angled ring from closing properly around
the shaft.
Some channel‐type packing with a lead core may
require a slight gap between packing rings to allow
