Gorman-Rupp Pumps 02K3-B 283128 and up - Manual (Page 24)

OM-01162 0 SERIES
MAINTENANCE & REPAIR PAGE E - 5
the impeller vanes, being careful not to damage
the vanes. Disengage the impeller nut (28).
Install the shaft key (16). Install a lathe dog on the
drive end of the shaft (17) 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 (15). Tie and
tag the shims or measure and record their thick­
ness for ease of reassembly.
Seal Removal and Disassembly
Remove the spring retainer and spring. Apply oil to
the shaft and work it up under the rubber bellows.
Slide the rotating portion of the seal off the shaft.
Remove the hardware (9, 10 and 11) securing the
intermediate bracket (20) to the bearing housing
(13). Slide the intermediate bracket off the shaft
and use a suitably sized dowel to press the seal
stationary element and seat out of the intermediate
from the back side.
Remove the slinger ring (21).
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.
Use snap ring pliers to remove the bearing retain­
ing ring (18) from the bearing housing bore. Re­
move the bearing shim set (19); tie and tag the
shims, or measure and record their thickness for
ease of reassembly.
Place a block of wood against the impeller end of
the shaft (16) and tap the shaft and bearings (12
and 14) from the bearing bore.
After removing the shaft and bearings, clean and
inspect the bearings in place as follows.
To prevent damage during removal from
the shaft, it is recommended that the bear­
ings be cleaned and inspected in place. It
is strongly recommended that the bear­
ings be replaced any time the shaft and
bearings are removed.
Clean the bearing housing, shaft and all compo­
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage and replace as necessary.
Most cleaning solvents are toxic and