Gorman-Rupp Pumps 03J1-B 713013 and up - Manual (Page 25)

OM-01202 0 SERIES
MAINTENANCE & REPAIR PAGE E - 5
the pump or component only as high as
necessary and keep personnel away
from suspended objects.
Tie and tag any leveling shims used under the cas­
ing feet to ease reassembly.
Inspect the wear ring (37) for excessive wear or
scoring. The wear ring is secured in the pump cas­
ing by a press fit. If replacement is required, use a
small bit to drill two holes through the ring horizon­
tally, 180
_ apart. Use a saw or chisel to complete
the cuts through the ring, and remove it from the
pump casing. Use caution not to damage the
pump casing bore when removing the wear ring.
Use caution not to damage the pump cas­
ing bore when removing the wear ring.
Impeller Removal
Immobilize the impeller by inserting a bar between
the impeller vanes, being careful not to damage
the vanes. Remove the impeller capscrew, lock­
washer and washer (32, 33 and 34). Remove the
bar from the impeller vanes.
Position two wedges opposite each other behind
the impeller, and tap the wedges carefully in turn
untill the impeller comes free of the shaft. When the
impeller comes free, remove the wedges and finish
pulling the impeller from the shaft. Use caution
when removing the impeller; tension on the seal
spring will be released as the impeller is removed.
Retain the impeller key (8).
Remove the impeller adjusting shims (4). Tie and
tag the shims or measure and record their thick­
ness for ease of reassembly.
Seal Removal and Disassembly
(Figures 1 and 2)
Remove the seal spring. Slide the shaft sleeve (10)
and rotating portion of the seal off the shaft as a
unit. Remove the shaft sleeve O‐ring (11).
Apply oil to the sleeve and work it up under the rub­
ber bellows. Slide the rotating portion of the seal off
the shaft sleeve.
Slide the seal plate and stationary element off the
impeller shaft as a unit. Press the stationary seal
element and O‐ring out of the seal plate from the
back side.
Use caution not to damage the seal plate
bore when removing the wear ring.
Inspect the wear ring (7) for excessive wear or
scoring. The wear ring is secured in the seal plate
by a press fit. If replacement is required, use a
small bit to drill two holes through the ring horizon­
tally, 180
_ apart. Use a saw or chisel to complete
the cuts through the ring, and remove it from the
seal plate. Use caution not to damage the seal
plate bore when removing the wear ring.
Shaft And Bearing Removal And Disassembly
When the pump is properly operated and main­
tained, the pedestal should not require disassem­
bly. Disassemble the shaft and bearings only
when there is evidence of wear or damage.
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.
Remove the pedestal drain plug (29) and drain the
lubricant. Clean and reinstall the drain plug.
Remove the slinger ring (12).
Use snap ring pliers to remove the bearing retain­
ing ring (21) from the pedestal bore. Remove the
bearing shim set (20); tie and tag the shims, or
measure and record their thickness for ease of
reassembly.
Remove the setscrews (25) from the bearing re­
tainer (26) and install two machine screws
(#10-32 x 1-inch long, not supplied). Pry the re­