OM-05450
GHS SERIES
PAGE F - 22
SEAL APPENDIX
Seal Removal
(Figures E‐1 and F‐8)
See
PUMP DISASSEMBLY
and disassemble the
pump up to and including the
Rotor Adjusting
Sleeve (07)
.
Reach through the “window” in the backhead
(06AA) and slide the cartridge lip seal assembly
(05) off the shaft.
Remove the shaft O‐ring (05C).
The cartridge seal is replaceable as an assembly.
To replace the seal, loosen the setscrews securing
the seal to the shaft sleeve and pull the sleeve out
of the seal assembly.
Removal of the seat sleeve (06AK) is not normally
required. If replacement is desired, continue with
PUMP DISASSEMBLY
, then use an arbor (or hy
draulic) press and a suitably sized dowel to press
the seat sleeve out of the backhead from the front
end of the backhead.
Seal Installation
(Figures E‐1 and F‐8)
If the seat sleeve (06AK) was removed, use an ar
bor (or hydraulic) press and a suitably sized dowel
to press the new seat sleeve into the backhead
from the back end of the backhead.
See
Pump Reassembly, Section E
, and as
semble the housing assembly (04), backhead kit
(06) and rotor/shaft assembly (03).
Clean the seal cavity 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.
Lubricate and install the shaft O‐ring (05C).
Slide the cartridge seal assembly over the shaft
sleeve until fully seated against the shoulder on the
sleeve. Slide this subassembly onto the rotor shaft
until the shaft sleeve seats squarely over the O‐ring
(05C) and against the shaft shoulder.
Assemble the rotor adjusting sleeve (07) and pro
ceed with
Pump Reassembly, Section E
.
Barrier Liquid Recommendations
In general, a barrier liquid is
always
recom
mended. This requirement may be satisfied by a
simple grease zerk, or it may become more compli
cated based on the application. The following bar
rier liquid guidelines are offered for maximum per
formance.
