Hale Q Series Muscle - Manual (Page 123)

123 MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual
p/n: 029-0020-63-0
Repair and Corrective Maintenance 
8. Install the outer retaining ring and the outer clearance ring ensuring proper orien-
tation.
9. Slide the AutoLube assembly over pump shaft. Also see heading “QMID/QMAX/
QTWO AutoLube ® Service” on page 116.
10. Install the impeller shaft assembly to the pump.
Disassembly - QTWO Two-Stage Pump
Also see Figure 7-7: “Qmax / Qtwo Assembly Overview” on page 120.
1. Place the impeller shaft assembly on a suitable workbench, capable of handling
the load.
2. Remove the AutoLube assembly from pump shaft end. Also see heading “QMID/
QMAX/QTWO AutoLube ® Service” on page 116.
IMPORTANT!
MARK THE PRIMARY OR SECONDARY IMPELLERS IN RELATION TO THE AUTOLUBE.
IMPROPER OR BACKWARD INSTALLATION OF THE IMPELLERS AFFECTS PUMP PER-
FORMANCE.
3. Remove impeller retaining rings.
4. With an acetylene torch EVENLY heat the “eye” and hub of the first impeller for
approximately two minutes.
5. When heated properly the impeller is removed from the pump shaft using a gear
puller. If the impeller moves but does not slide freely, do not immediately reheat.
Allow the complete assembly to cool to room temperature, then reheat again and
continue removing the impeller.
6. Allow the components to cool to room temperature before continuing.
7. Remove the center support bearing. Then rotate the impeller shaft assembly end
for end and heat and remove the second impeller.
8. Remove the impeller key.