OM--05450
GHS SERIES
PAGE F -- 27
SEAL APPENDIX
Seal Removal
(Figures E-1 and F-9)
See
PUMP DISASSEMBLY
and disassemble the
pump up to and including the
Rotor Adjusting
Sleeve (07)
. As the rotor adjusting sleeve (07AA) is
unscrewed from the backhead (06A), the complete
seal assembly (05) will be pulled out with it.
Position the rotor adjusting sleeve assembly on a
flat surface with the seal facing up. Pry the seat
sleeve (07L) and seal assembly from the rotor ad-
justing sleeve assembly. Press the seal assembly
out of the seat sleeve.
Remove the shaft O-ring (05C).
NOTE
Due to the complexity of design of the cartridge seal
assemblies, seal disassembly for the purpose of re-
use is not recommended. Replacement seals in-
clude the shaft sleeve, spring pins and all O-rings.
Replace the complete cartridge seal when leakage
occurs.
Continue as required with
PUMP DISASSEMBLY
.
Seal Installation
(Figures E-1 and F-9)
See
Pump Reassembly, Section E
, and as-
semble the housing assembly (04), backhead kit
(06) and rotor/shaft assembly (03A).
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.
NOTE
Due to the complexity of design of the cartridge seal
assemblies, seal disassembly for the purpose of re-
use is not recommended. Replacement seals in-
clude the shaft sleeve, spring pins and all O-rings.
Replace the complete cartridge seal when leakage
occurs.
Unwrap the cartridge seal and check that all com-
ponents are preassembled, clean, undamaged
and free of any foreign matter.
Position the pump on a flat surface with the drive
end facing up. Lubricate the shaft O-ring (05C) and
install it in the groove in the shaft.
Assemble the rotor adjusting sleeve (07) as de-
scribed in
Pump Reassembly, Section E
and po-
sition it on a flat surface with the drive end down.
Position the cartridge seal assembly in the rotor ad-
justing sleeve assembly so the spring pins (S) fully
seat in the holes in the bearing retaining nut
(07AD). Use a suitably sized sleeve and an arbor
(or hydraulic) press to press the seat sleeve (07L)
over the end of the bearing retaining nut (07AD) un-
til fully seated against the shoulder of the bearing
retaining nut.
Oil the O-ring (07B) and install it in the groove in the
seat sleeve (07L).
Proceed to install the rotor adjusting sleeve assem-
bly as described in
Pump Reassembly, Section
E
.