AMT 5585-001-96 Casing - Cast Aluminum

The AMT 5585-001-96 is a Casing Xal for an AMT Self-Priming Trash Pump. IMPELLER AND VOLUTE REPLACEMENT : Impeller and volute are subject to wear only by abrasive sand or sediment laden liquids. If badly worn, all these parts can be replaced and the pump thus restored to full efficiency. NOTE: When the clearance between the impeller and the volute exceeds 1/16 Inch at the face of the impeller or 1/8 Inch on the outside diameter of the impeller, it may be necessary to take corrective action. The increased clearance can cause lengthened priming times and reduce pumping capacity. If both the priming and capacity of your unit are satisfactory for your application, it is recommended that no corrective maintenance be performed regardless of what clearances on your unit may have developed, since the increased clearances in themselves are not generally harmful to your pump. Normally, new pump clearances can be restored by simply shimming behind the impeller. If the impeller is badly worn, it is recommended that the impeller be replaced. This is usually all that is required since only on unusually abrasive services does the cast iron volute show deterioration. Occasionally a stone or hard object might get caught in the impeller and cause damage to the volute/cutwater. In these cases, follow the instructions below for replacement. 1. Refer to InchSliding Engine Sled Operation Inch section for procedure to access the volute and inside of the casing. 2. Remove casing O-ring from outside diameter of volute flange. A mechanical means of supporting the volute during this procedure is recommended. The volute casting weighs 50 lbs. 3. Remove three 1/2-13 x 1-1/4 Inch cap screws holding volute to pump adapter . Slide volute out of adapter machined pocket. 4. Replace worn parts as necessary. NOTE: When replacing volute, attach a new volute gasket to new volute with fasteners. NOTE: Before installing new parts, clean all mating surfaces thoroughly. 5. Install volute aligning flange outside diameter with adapter machined pocket. Replace three 1/2-13 cap screws. Check for interference between impeller face and volute by slowly rotating engine shaft. See SHIM ADJUSTMENT section for procedure to set impeller clearance. 6. Inspect casing O-ring for cracks or tears, replace if necessary. Install O-ring on outside diameter of volute flange. 7. Slide engine sled and engine assembly into casing, align outside diameter of volute flange with casing machined inside diameter, do not pinch casing O-ring. Install four 5/8- 11 hex bolts and nuts. Tighten six 1/2-13 hex nuts clamping engine sled in position.