18
Operation Manual.
6.
Disassembling the pump
Below are outlined instructions to completely disassemble the pump.
In order to perform maintenance, only disassemble as far as required.
•
Turn off power.
•
Drain system, including. flushing, if necessary.
•
Closed coupled units and remove bolts that hold down the
motor.
•
Remove casing bolts.
•
Remove back pull-out casing.
•
Unscrew impeller nut.
•
To remove the impeller from the shaft, use the appropriate
size gear puller aligned behind the impeller vanes.
•
Remove impeller key.
•
Remove the backplate bolts and backplate.
•
To replace the shaft sleeve, heat evenly to about 350°F in
order to loosen the Loctite and then twist the sleeve off.
•
Remove motor bracket.
•
Remove Slinger.
•
Replace lip seals if worn or damaged..
•
Check shaft for runout at the sleeve area.
CAUTION.
Do not insert screwdriver between impeller vanes to prevent
rotation. It may be necessary to use a strap wrench around the impeller
or shaft to prevent rotation.