Bell & Gossett MK MV (8204, 8204X) - Manual (Page 42)

Replace the impeller
WS000139A
Required tools:
• 10 mm hexagon bit adapter with an extension of at least 125 mm (4.92 in.)
• Impeller puller
If applicable, contact your local sales and service representative for correct type and
size.
• Rod (wooden or copper) for locking the impeller in place, if applicable.
• Two crowbars, if applicable
WARNING:
• If you fail with the impeller installation, you must redo the installation procedure from the
beginning.
• A worn impeller and/or pump housing can have very sharp edges. Wear protective
gloves.
• When laying the pump on its side, do not allow the weight of the pump to rest on any
portion of the impeller. The impeller must not be allowed to make contact with the
concrete floor or other hard and rough surfaces.
Remove the impeller
CAUTION:
Wear heavy work gloves when you handle impellers. The sharp edges can cause physical
injury.
1. Place the pump in a horizontal position.
2. Remove the impeller:
a) Lock the impeller in place by inserting a rod through the pump housing outlet.
b) Remove the impeller screw.
c) Turn the adjustment screw counterclockwise until the impeller breaks free from the
shaft.
d) Hand-tighten the impeller screw to prevent it from falling off.
Maintenance
40 MK, MV (8204, 8204X) Installation, Operation, and Maintenance Manual