Gorman-Rupp Pumps 112B60-B 758209 and up - Manual (Page 25)

OM-01828 10 SERIES
MAINTENANCE & REPAIR PAGE E - 5
for wear or damage and if replacement is required,
press them from the pivot brackets.
If no further disassembly is required, see Suction
Check Valve Installation.
Wear Plate And Suction Head Removal
Service to the wear plate (59), impeller (2) or seal
assembly (3), can be accomplished from either
side of the pump casing (1). The following instruc­
tions are based on service from the suction side of
the pump.
Remove the hardware securing the check valve
flange to the base. Tie and tag any leveling shims
used under the mounting feet to ease reassembly.
Remove the hardware (69, 70, 71, 98 and 99) and
use a suitable hoist and sling to separate the valve
flange (72) and gasket (97) from the suction head
(68).
Before attempting to remove the suction head,
support the pump body by wedging a block of
wood under the pump casing. Install an eye bolt
(1‐8 UNC threads, not supplied) in the tapped hole
in the top of the intermediate (15). Be sure the eye
bolt is fully engaged before attaching a hoist. The
hoist is used to support the pump only, do not try
to lift it.
Remove the hardware securing the pedestal foot
(48) to the base. Tie and tag any leveling shims
used under the mounting feet to ease reassembly.
Remove the hardware (66, 67, 100, and 101) se­
curing the foot and suction head (68) to the pump
casing and separate the assemblies.
NOTE
To ease the removal of the suction head, it may be
necessary to loosen the wear plate retaining hard­
ware (63 and 64). If the wear plate is loosened the
impeller face clearance will require readjustment.
See
Pump Reassembly.)
Inspect the wear plate (59) and O‐ring (60) for dam­
age or wear. If the wear plate must be replaced, re­
move the hardware, (63 and 64) from the wear
plate studs (62). Loosen the jam nuts (101) and
back off the adjusting screws (100) until the wear
plate is free. Inspect the suction head O‐ring (61)
for damage and replace as required.
Impeller Removal
To loosen the impeller (2), remove the impeller
capscrew and washer (85 and 87). Install two
capscrews in the 3/8‐16 UNC tapped holes located
in the impeller hub and use a suitable puller to re­
move the impeller from the shaft (35). Retain the
impeller key (88).
Inspect the roll pin (86) and replace it if worn or
bent. Inspect the impeller and replace it if cracked
or badly worn.
Seal Removal and Disassembly
(Figures E-1 and E-3)
Before removing the seal, disconnect the feed tube
(53) from the barbed elbow (52) in the seal plate
(57). Plug the tube to stop the flow of oil from the
bottle oiler (32). Allow the seal cavity to drain.
Remove the spring centering washer and seal
spring. Slide the shaft sleeve (28) and rotating por­
tion of the seal off the shaft as a single unit. Remove
both shaft sleeve O‐rings. Apply oil to the sleeve
and work it up under the bellows. Slide the rotating
portion of the seal off the shaft sleeve.
Use a stiff wire with a hooked end to remove the
stationary element, seat and O‐rings from the seal
plate.
Inspect the grooved pin (27) for wear or damage.
Using pliers, remove the grooved pin if replace­
ment is required.
Clean the seal cavity and shaft with a soft cloth
soaked in 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 contain­
ers.
If no further disassembly is required, see Seal
Reassembly and Installation.