Gorman-Rupp Pumps 03F3-B 463273 and up - Manual (Page 24)

OM-01189 0 SERIES
MAINTENANCE & REPAIR PAGE E - 5
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 and
washer (25 and 26). Remove the bar from the im­
peller vanes.
Install the shaft key (14). Install a lathe dog on the
drive end of the shaft (15) with the “V” notch posi­
tioned over the shaft key.
With the impeller rotation still blocked, see Figure 2
and use a long piece of heavy bar stock to pry
against the arm of the lathe dog in a counterclock­
wise direction (when facing the drive end of the
shaft). Use caution not to damage the shaft or key­
way. When the impeller breaks loose, remove the
lathe dog, key and wood block.
Turn
Counterclockwise
Lathe Dog Arm
“V” Notch
Shaft Key
Impeller Shaft
Lathe Dog
Setscrew
Heavy
Bar Stock
Figure 2. Loosening Impeller
Unscrew the impeller from the shaft. Use caution
when removing the impeller; tension on the seal
spring will be released as the impeller is removed.
Remove the impeller adjusting shims (35). Tie and
tag the shims or measure and record their thick­
ness for ease of reassembly.
Seal Removal and Disassembly
(Figures 1 and 3)
Remove the seal spring. Slide the shaft sleeve (17)
and rotating portion of the seal off the shaft as a
unit.
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.
Shaft And Bearing Removal And Disassembly
When the pump is properly operated and main­
tained, the shaft and bearing should not require
disassembly. Disassemble the shaft and bearing
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.
Disengauge the hardware (12 and 13) and remove
the bearing cap (16) and bearing shims (18). Tag
the shims, or measure and record their thickness
for ease of reassembly.
NOTE
There are no previsions for removing the grease
from the pedestal. Place a drip pan under the ped­
estal before removing the shaft and bearings.
Remove the slinger ring (22) from the shaft.