Gorman-Rupp Pumps 02F1-GR 642659 and up - Manual (Page 28)

0 SERIES OM-01155
MAINTENANCE & REPAIR PAGE E - 8
Pump Disassembly
(Figure 1)
If the pump casing, oil seal (4) or gearbox assem­
bly (9) requires replacement, the casing must be
separated from the gearbox housing (5, Figure 2).
Remove the hardware (7 and 8) securing the pump
casing to the gearbox, and separate the assem­
blies. Remove the casing gasket (6).
Lay the pump casing on an arbor (or hydraulic)
press with the cover plate opening up, and use a
suitably sized sleeve to press the oil seal out of the
casing.
Inspect the wear ring (5) for excessive wear or
scoring. The wear ring is secured in the pump cas­
ing by a press fit. If replacement is required, care­
fully cut through the wear ring in two places, 180
_
apart, and remove the wear ring parts from the
pump casing. Use caution not to damage the
pump casing when removing the ring.
If no further disassembly is required, proceed with
PUMP AND SEAL REASSEMBLY. If the gearbox
requires disassembly, do not reassemble the
pump components at this time. Refer to GEAR­
BOX DISASSEMBLY and GEARBOX REAS­
SEMBLY, followed by PUMP AND SEAL REAS­
SEMBLY.
PUMP AND SEAL REASSEMBLY
If the gearbox requires disassembly, refer to
GEARBOX DISASSEMBLY and GEARBOX
REASSEMBLY, followed by PUMP AND SEAL
REASSEMBLY.
Pump Reassembly
(Figure 1)
Clean the pump casing (1), shaft and all compo­
nent parts with a soft cloth soaked in fresh cleaning
solvent.
Most cleaning solvents are toxic and
flammable. Use them only in a well‐ven­
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent
containers.
Inspect the shaft for distortion, nicks, scratches or
thread damage. Dress small nicks and burrs with a
fine file or emery cloth. If the shaft is defective, see
GEARBOX DISASSEMBLY and GEARBOX
REASSEMBLY.
If the wear ring (5) was removed, press the replace­
ment wear ring into the pump casing through the
cover plate opening until fully seated.
The wear ring must seat squarely in the
casing bore or binding and/or excessive
wear will result.
Inspect the pump casing for nicks or burrs and re­
move any that exist. Apply a light coating of oil to
the oil seal (4) and press it into the casing with the
lip positioned as shown in Figure 1.
Install the casing gasket (6) and slide the casing
over the shaft. Be careful not to damage the lip of
the oil seal (4) on the shaft threads. Secure the cas­
ing to the gearbox assembly (9) with the hardware
(7 and 8).
Seal Reassembly and Installation
(Figures 1 and 4)
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 excessive heat,