HALE AP, Technical Manual

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Perform the following to remove and replace pump clearance ring(s).
AP/CBP/MBP Volute Clearance Ring Removal
NOTE
Use cribbing to prevent volute from tipping or moving if required.
A. Place volute on stable work surface with suction opening down.
DO NOT CUT THRU THE CLEARANCE RING. CUTTING THRU THE CLEARANCE RING
WILL DAMAGE THE VOLUTE AND MAY RESULT IN PUMP FAILURE.
B. Using cutting wheel, cut two slots (180° apart - opposite each other) into
failed clearance ring. See Figure 38.
Figure 39. Slots Cut In Clearance Ring–Volute
C. Place volute on stable work surface with suction opening up.
D. Using a chisel and hammer, drive clearance ring out of volute. See Figure 39.
Figure 40. Clearance Ring Driven Out–Volute