Gorman-Rupp Pumps V3A60-D914L3 1438800 and up - Manual (Page 42)

OM−06267 ULTRA V SERIES
MAINTENANCE & REPAIR PAGE E − 15
Turn
Counterclockwise
Lathe Dog Arm
V" Notch
Shaft Key
Impeller Shaft
Lathe Dog
Setscrew
Heavy
Bar Stock
Figure 7. Loosening Impeller
Rotating Assembly Removal
(Figure 5)
Remove the hardware (13 and 38, Figure 4) secur-
ing the rotating assembly to the pump casing. Sep-
arate the rotating assembly by pulling straight
away from the pump casing. Tie and tag the rotat-
ing assembly spacers (40) for ease of reassembly.
NOTE
An optional disassembly tool is available from the
factory. If the tool is used, follow the instructions
packed with it. A similar tool may be assembled us-
ing 1/2-inch pipe (schedule 80 steel or malleable
iron) and a standard tee (see Figure 8). All threads
are 1/2-inch NPT. Do not pre-assemble the tool.
TEE
APPROX. 6 IN.
(152 MM) LONG
APPROX. 14 IN.
(356 MM) LONG
Figure 8. Rotating Assembly Tool
To install the tool, remove the vented plug (10, Fig-
ure 5) from the bearing housing, and screw the
longest length of pipe into the vent hole until fully
engaged. Install the tee, and screw the handles into
the tee. Use caution when lifting the rotating assem-
bly to avoid injury to personnel or damage to the
assembly.
Remove the seal plate and bearing housing O-
rings (27 and 28).
Impeller Removal
(Figure 5)
With the rotating assembly removed from the
pump casing, unscrew the impeller from the shaft.
Use caution when unscrewing the impeller; ten-
sion on the shaft seal spring will be released as the
impeller is removed. Inspect the impeller and re-
place if cracked or badly worn.
Remove the impeller adjusting shims (2); tie and
tag the shims, or measure and record their thick-
ness for ease of reassembly.
Seal Removal
(Figure 5)
Slide the integral shaft sleeve and rotating portion
of the seal off the shaft as a unit.
Use a pair of stiff wires with hooked ends to remove
the stationary element and seat.