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Company Confidential
Waukesha Cherry-Burrell
200 Series
Centrifugal Pump
Seal School
Company Confidential
Company Confidential
200 Series Tear Down
•Lock out power.
•Disconnect suction and discharge piping
•Loosen clamp
Company Confidential
200 Series Tear Down
Remove pump casing, may require light tapping with soft mallet.
Company Confidential
200 Series Tear Down
With casing removed, unscrew impeller nut by turning counter clock wise.
Company Confidential
200 Series Tear Down
With impeller nut removed, the impeller, back plate and seal assembly can be removed by pulling toward you.
(Pumps built after July of 2004 are fitted with an impeller nut versus bolt)
Company Confidential
200 Series Tear Down
Complete removal by pulling assembly off of the motor, or bearing frame shaft. Make sure to check shims located on motor shaft. It is not necessary to replace shims unless they have been damaged.
Company Confidential
200 Series Tear Down
Place assembly impeller down on soft or non metallic surface.
Company Confidential
200 Series Tear Down
Using a 1/8” allen wrench loosen both set screws in the spring retainer.
Company Confidential
200 Series Tear Down
Slide spring retainer off of the impeller shaft, using care not to lose the three springs.
Company Confidential
200 Series Tear Down
Loosen seal retainer ring using a 7/16” wrench by turning the four bolts counter clockwise.
Company Confidential
200 Series Assembly
Place back plate over impeller, using care not to drop the
plate onto the impeller.
Company Confidential
200 Series Assembly
Install new L gasket and stationary seal. Note stationary seal can be used on both
sides.
Company Confidential
200 Series Assembly
Re-install seal retainer and 4 bolts.
Slide rotary seal over impeller shaft.
Company Confidential
200 Series Assembly
Using the spring retainer upside
down press rotary seal o-ring into
place.
Company Confidential
200 Series Assembly
Remove spring retainer and install
tabbed washer, align tabs with flats on the
rotary seal.
Company Confidential
200 Series Assembly
Install spring retainer with springs pointed down. A light coat of grease or sealant can
be used to retain springs into the
retainer. Align tabs of washer onto the
retainer.
Company Confidential
200 Series Assembly
Using a 1/8” allen wrench as a spacer,
press the sprint retainer down to
compress the wrench onto the rotary seal.
While keeping pressure on the spring
retainer, remove wrench and tighten
both set screws.
Company Confidential
200 Series Assembly
Install splash defector with flat side toward the motor. Install
until deflector is over the end of
the impeller shaft.
Company Confidential
200 Series Assembly
Apply a light coat of food grade anti-seize onto motor shaft and
install complete assembly onto the motor by aligning key and keyway.
Company Confidential
200 Series Assembly
Press back plate onto the motor
adaptor to ensure clearance of .030” between impeller and back plate is obtained. Use a feeler gauge to
check clearances.
Company Confidential
200 Series Assembly
If clearance between impeller and back plate needs to be adjusted, shims can be
added or removed from motor shaft.
Company Confidential
200 Series Assembly
Re-install impeller nut and o-ring
onto shaft stud and tighten with 9/16”
wrench turning clockwise.
Company Confidential
200 Series Assembly
Install clamp and tighten, check to ensure clamp is
installed correctly by clamping both
casing and adaptor.