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IMPELLER / WEAR
RINGS SHIMMING INSTRUCTIONS
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Tools
Needed:
1. 0.30 feeler gauge
2. Propane torch.
3. Bent screwdriver
4. WD-40
5. Impeller wrench
6. 3/4" wrench
7. 9/16" wrench
8. Dead blow hammer |
To Remove Old
Wear Ring:
Use a propane torch. Place the flame on the brass
ring go around in a circular motion until the insulator
starts to melt. Grab the ring with a bent over
screwdriver (90 degrees) and pull out. Clean up
wear ring bore.
Installation:
Place wear ring in freezer for four hours.
Place insulator in suction bore. Spray with
WD-40. Start wear ring by hand. Tap wear
ring in using a wooden block and a mallet. You may
use an old impeller, but it may bottom out on the shaft
before seating the ring.
Important:
Wear ring must be seated square in the bore within
0.004" side to side.
The axial
clearance between the impeller and the impeller shoulder
must be 0.025"-0.035" (check several places
around the wear ring.) Check again after the
impeller nut has been tightened.
Torque impeller
nut to 70 ft/lbs. Torque bowl bolts to 50 ft/lbs.
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