Waterous CM Series Overhaul Instructions page 26

Safety
Disassembling the Impeller Shaft with Mechanical Seals
13
15
Introduction
14
Disassembly
16
26 | 70
Assembly
Use the illustrations and instructions to disassemble
the impeller shaft.
13 Remove the seal housing hardware, then
remove the seal housing cover.
14 Remove the stationary ring.
15 Remove the throttle bushing.
16 Remove and discard the O-ring.