Gorman-Rupp Pumps 06B3-B 806819 and up - Manual (Page 25)

OM-01224 0 SERIES
MAINTENANCE & REPAIR PAGE E - 5
Remove the suction and discharge lines. Remove
the nuts (35) and use a suitable hoist and sling to
separate the pump casing and gasket (8) from the
seal plate and pedestal.
Tie and tag any leveling shims used under the cas­
ing feet to ease reassembly.
Inspect the wear ring (36) 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 three holes through the ring hori­
zontally, 120
_ apart. Use a saw or chisel to com­
plete 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. Disengage the hardware (42 and 43).
Remove the bar from the impeller.
Install 5/16-18 UNC by 4‐inch long capscrews in
the tapped holes in the impeller. Use the caps­
crews and a suitable puller to remove the impeller
from the shaft. Use caution when removing the im­
peller; tension on the seal spring will be released as
the impeller is removed. Retain the impeller key
(44).
Remove the impeller adjusting shims (51). 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 (50)
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.
Remove the round head machine screws (9) and
slide the seal plate and stationary seat off the im­
peller shaft as a unit. Press the stationary seal seat
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 (10) for excessive wear or
damage. The wear ring is secured in the seal plate
by a press fit. If replacement is required, use a
small bit to drill three holes through the ring hori­
zontally, 120
_ apart. Use a saw or chisel to com­
plete 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 (31) and drain the
lubricant. Clean and reinstall the drain plug.
Remove the slinger ring (12) Disengage the hard­
ware (33) and slide the assembled bearing cap
(13) and oil seal (15) off the shaft. Remove the bear­
ing cap gasket (14). Press the oil seal from the
bearing cap.
Disengage the hardware (19) and slide the as­
sembled bearing cap (18) and oil seal (20) off the
shaft. Tie and tag bearing shim set (23) for ease of
reassembly. Remove the bearing cap gasket (17).
Press the oil seal from the bearing cap.