Gorman-Rupp Pumps 112G60-B 1214462 and up - Manual (Page 28)

OM−05174 10 SERIES
MAINTENANCE & REPAIR PAGE E − 5
Be sure the eye bolt is fully engaged before attach-
ing a hoist. The hoist is used to support the suction
elbow only, do not try to lift the pump. Remove the
hardware securing the elbow support (84) and
front pedestal foot (63) to the base.
Do not attempt to lift the complete pump
using the lifting eye. It is designed to fa-
cilitate removal or installation of individ-
ual components only. Additional weight
could cause damage to the pump or fail-
ure of the eye bolt, resulting in possible
serious personnel injury.
Remove the hardware (12, 13, 81 and 82) securing
the suction elbow to the pump casing (1). Use the
jacking screws (83) to force the suction head out of
the pump casing. Tie and tag any leveling shims
used under the supports (63 and 84) to ease reas-
sembly.
Inspect the wear plate (74) and O-ring (75) for dam-
age or wear. If the wear plate must be replaced, re-
move the hardware (78 and 79) from the wear plate
studs (77). Loosen the jam nuts (11) and use the
adjusting screws (10) to press the wear plate from
the suction elbow. Remove the O-ring (75) from the
wear plate.
Impeller Removal
To loosen the impeller (2), immobilize the impeller
by by wedging a block of wood between the vanes
and pump casing. Remove the impeller capscrew,
washer and roll pin (93, 94 and 95). Remove the
wood block and install two capscrews (not sup-
plied) in the 3/8-16 UNC tapped holes located in
the impeller hub. Attach a suitable puller to remove
the impeller. Retain the impeller key (96).
Inspect the roll pin (95) and replace it if worn or
bent. Inspect the impeller and replace it if cracked
or badly worn.
Seal Removal and Disassembly
Before removing the seal, disconnect the hose (68)
from the barbed elbow (67) in the seal plate (72).
Plug the tube to stop the flow of oil from the bottle
oiler (47). Allow the seal cavity to drain. Remove the
air vent and piping (25, 26 and 27).
Remove the spring centering washer (39) and the
seal spring. Slide the shaft sleeve (41) and rotating
portion of the seal off the shaft as a unit. Remove
both shaft sleeve O-rings (42 and 43). 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 pair of stiff wires with hooked ends to remove
the stationary element, seat and O-rings from the
seal plate.
Remove the groove pin (40) if bent or damaged.
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.
Pump Disassembly
Remove the discharge piping. If disassembly is re-
quired, remove the hardware (14, 15 and 16) se-
curing the discharge reducer (17) and flange gas-
ket (21) to the pump casing (1).
Remove the hardware (44) securing the bottle oiler
bracket (48) to the pedestal (62). Use a suitable
hoist and sling to support the pump casing, and re-
move the remaining hardware (70 and 71). Sepa-
rate the casing from the pedestal assembly.
Remove the pump casing O-ring (23) and inspect it
for damage.
Separate the seal plate (72) from the intermediate
(28) by removing the capscrews (24). If required,
remove the air vent and piping (25, 26 and 27).
Press the oil seal (19) from the seal plate.
Separate the intermediate from the pedestal body
(62) by removing the hardware (64 and 65).