Impeller/Wear Ring Shimming Instruction
5725 Redwood Drive. Rohnert Park, CA 94928 Phone 707.585.9871 Fax 707.585.2935 IMPELLE/R WEAR RING SHIMMING INSTRUCTIONS AT, TJ, SD-309, DOMINATOR, BERKELEY, ENERGIZER KITS Tools Needed: 1. .030 Feeler Gauge 2. Propane Torch 3. Bent Screw Driver 4. WD-40 5. 6. 7. 8. Impeller Wrench ¾ Wrench 9/16 Wrench Dead Blow Hammer To remove old wear ring: Use a propane torch. Place the flame on the brass ring and go around in a circular motion until the insulator starts to melt. Grab the ring with a bent over screwdriver (90 deg.) and pull it out. Clean up the wear ring bore. Installation: Place the wear ring in the freezer for four hours. Place the insulator in the suction bore. Spray with WD-40. Start the wear ring by hand. Tap the 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: The 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 the impeller nut to 70 ft/lbs. Torque the bowl nuts to 50 ft/lbs.
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