CAUTION:
•
Avoid injury. Worn pump components can have sharp edges. Wear appropriate gloves
while handling these parts.
6.4.2 Disassemble the head and column
WARNING:
Safe lifting points are specifically identified in the general arrangement drawing. It is critical to
lift the equipment only at these points. Integral lifting eyes or swivel hoist rings on pump and
motor components are intended for use in lifting the individual components only. Never try to lift
the entire pump assembly by the lifting points furnished for the driver only.
1.
Remove the necessary components:
If the pump is...
Then remove...
Gear-driven
The driveshaft between the gear and the prime mover.
Electric-motor driven
The electrical connections at the conduit box and label the
electrical leads so they can be reassembled correctly.
2.
Uncouple the driver, or gear box, from the pump shaft and mounting flanges, and then lift off by the
lifting lugs or swivel hoist rings as furnished.
3.
Remove all hold-down bolts and integral piping.
4.
Remove the coupling, mechanical seal.
5.
Continue with disassembly down to the bowls as described in the next section.
6.4.3 Bowl disassembly
The bowl assembly is composed of these parts:
•
Suction bell
•
Intermediate bowls
•
Top bowl
•
Impellers and securing hardware
•
Bearings
•
Pump shaft
NOTICE:
Match mark the components in sequence in order to aid the reassembly.
6.4.3.1 Disassemble the keyed bowl
1.
Remove the capscrews that secure the top bowl to the intermediate bowl.
2.
Slide the top bowl off the pump shaft.
3.
For singe-stage pumps, lift pump shaft and impeller from suction bell as an assembly. Dismantle
split ring from impeller and remove shaft from impeller.
6.4.4 Remove the bowl and impeller wear rings
1.
Use a diamond-point chisel in order to cut two V-shaped grooves on the bowl or impeller wear ring
approximately 180° apart.
Use extreme care not to damage the wear ring seat.
2.
With a chisel or drift punch, knock the end of one half of the ring in, and pry the ring out.
6.4 Disassembly
Model VCW Installation, Operation, and Maintenance
57
Summary of Contents for Goulds Pumps VCW
Page 1: ...Installation Operation and Maintenance Model VCW ...
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