Hale Q Series Muscle - Manual (Page 122)

 Repair and Corrective Maintenance
122 MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual
p/n: 029-0020-63-0
WARNING!
WEAR PROTECTIVE, HEAT-RESISTANT GLOVES WHILE HEATING THE IMPELLER TO
REMOVE OR INSTALL IT ONTO THE IMPELLER SHAFT. HEATED METAL CAN CAUSE
SERIOUS INJURY TO YOUR HANDS.
DO NOT OVER HEAT THE IMPELLER. THE IMPELLER IS CONSTRUCTED OF BRONZE.
IF THE IMPELLER IS OVERHEATED (AND TURNS RED OR BLUE DURING REMOVAL
FROM THE SHAFT), IT HAS BEEN WEAKENED AND MUST BE REPLACED.
ALLOW ALL COMPONENTS TO COOL TO ROOM TEMPERATURE BEFORE CONTINU-
ING.
5. Remove the inner clearance ring, then remove the impeller key.
Assembly - QMAX/QMID Single-Stage Pump
Also see Figure 7-7: “Qmax / Qtwo Assembly Overview” on page 120.
1. Clean the impeller shaft and the keyway. Also see heading “Cleaning and Inspec-
tion Guidelines” on page 106. See WARNING! note on page 122.
2. Check the water way in the seal housing for restrictions - clean as needed.
3. Install the inner retaining ring.
4. Install a new gasket on the seal housing face. (See Figure 7-7: “Qmax / Qtwo
Assembly Overview,” on page 120.)
5. Verify the key is free to slide in the impeller keyway, then install the key.
CAUTION!
IF THE IMPELLER OR CLEARANCE RINGS ARE DROPPED, DAMAGED OR DEFORMED,
THEY MUST BE REPLACED.
6. Install the inner clearance ring over the impeller shaft checking for proper ori-
entation.
7. Using the torch, heat the “eye” and hub of the new impeller in an EVEN fashion
for approximately two minutes. Then, slide the impeller onto the shaft making
sure the vanes are in the proper orientation.
Note: The vanes turn in the clockwise direction when viewed from the front of the impeller
assembly. If the impeller does not fully slide onto the shaft allow the assembly to cool to
room temperature before re-heating.