6.5.4.2 Replace the impeller wear rings
The impeller wear rings (142, 144, 206) are held in place by a press fit and three setscrews (320).
1.
Remove the impeller wear rings:
a) Remove the setscrews.
b) Remove the wear rings from the impeller (101), (145). Use suitable pry or puller tools to force
the rings from the fits.
You can also machine the rings for removal.
CAUTION:
Excessive machining can damage ring fits and render parts unusable.
2.
Install the impeller wear rings:
a) Thoroughly clean the wear-ring seats, and make sure that they are smooth and free of scratch-
es.
b) Heat the new impeller wear rings to 132°C–143°C | 180°F–200°F using a uniform method for
heating, such as an oven, and place them on the impeller (101, 145) wear-ring seats.
WARNING:
Wear insulated gloves when you handle rings. Rings will be hot and can cause physical injury.
101
145
142
144
203
320
Figure 67: Wear ring replacement
c)
Locate, drill, and tap three new setscrew holes equally spaced between the original holes in
each new ring and ring seat area.
d) Install the setscrews (320) and upset threads.
3.
Turn the impeller wear rings (142, 144, 206) to size after you mount it on the impeller (101, 145).
NOTICE:
The impeller and wear-ring clearance setting procedures must be followed. Improperly set-
ting the clearance or not following any of the proper procedures can result in sparks, unexpect-
ed heat generation, and equipment damage.
6.5 Preassembly inspections
3640 i-FRAME API Type BB2 2-Stage / ISO 13709 2nd Ed. API 11th Ed. Installation, Operation, and Maintenance Man-
ual
89
Summary of Contents for Goulds Pumps i-FRAME 3640
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