OM--04621
GHA SERIES
PAGE F -- 9
SEAL APPENDIX
Packing Seal Removal
(Figures F-1 and F-4)
The pump does not need to be disassembled to re-
move the packing seal.
Loosen the gland locknut (D) and remove the
gland retainers (07H) and split gland halves (07G).
Use a stiff wire with a hooked end to remove the
packing rings and lantern ring from the seat sleeve
(06AK). Make sure all of the old packing is removed
before installing the new packing.
It is not recommended that the seat sleeve (06AK)
or throttle bushing sleeve be removed from the
backhead, as niether part should be subject to
wear or breakage under normal circumstances. If
removal is required, position the backhead (06A)
on the bed of an arbor (or hydraulic) press with the
drive end up and use a suitably sized dowel to
press the seat sleeve and throttle bushing sleeve
from the backhead as an assembly.
Consult the factory before attempting to separate
the seat sleeve and throttle bushing sleeve.
Packing Seal Installation
(Figures F-1 and F-4)
If the seat sleeve (06AK) and throttle bushing
sleeve (06AD) were removed, position the as-
sembled parts in the backhead (06A) so the hole in
the seat sleeve aligns with the lubrication fitting
(06AF). Use an arbor (or hydraulic) press to press
the throttle bushing sleeve into the backhead until
fully seated.
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---5.
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---5.
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---6.
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
