Maintenance Waukesha Cherry-Burrell
Page 34 95-03080 12/2010
10. If your system has a water cascade, thread the water cas-
cade hose through the guard and install the cascade block on
the backplate (See Figure 33, items A and B).
11. Slide the motor shims onto the shaft. Use the same number
of shim
s that were removed when the pump was disassem-
bled.
12. Install the impeller assembly on the stub shaft of the motor.
13. Hand-tighten the impeller retainer bolt on the shaft.
14. Check the space between the back of the impeller and the
backplate with a feeler gauge (.030 nominal) while holding
the backplate tight against the bearing housing flange. (Any
axial movement of the shaft should not be added to the .030
nominal clearance). See Figure 34. If needed, change this
clearance by adding or removing shims. Shims (Figure 35,
item A) are added on the drive shaft (item C) behind the
impeller shaft (item B).
15. Confirm operating clearances by cla
mping the casing to the
bearing housing flange and rotating the shaft/impeller manu-
ally to be sure the impeller does not touch the casing or back-
plate.
16. When the proper shim pack is confirmed, remove the back-
plate/impeller assembly leaving the shim pack on the shaft.
17. Apply anti-sieze or equal compound to the motor shaft and
install the key.
18. Install the backplate/impeller assembly and lock it in place
usin
g the o-ring and impeller retainer nut. Tighten with a
wrench.
19. Install the casing o-ring on the backplate and clamp the cas-
ing in place. See Figure 36.
s
NOTE: Rotate the impeller manually to ensure that it does not rub
on the backplate or casing.
Figure 33 - Installing the Water Cascade
System
Figure 34 - Clearance Between Impeller
and Backplate
Figure 35 - Locations of Shims
Figure 36 - Install Casing
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