AMT 1641-161-91 - EPT

The AMT 1641-161-91 is a 0.63 Seal FS16 Ept/Epr/Car/Cer for an AMT Pump. MECHANICAL SEAL REPLACEMENT
IMPORTANT: Always replace the seal assembly to insure proper mating of components. Also, impeller o-ring seal should be replaced if worn or damaged anytime impeller nut has been removed. 1. Unthread fasteners and remove pump casing and casing seal . 2. Remove impeller fastener, impeller seal , and impeller . 3. Shims , seal spacer and seal head can now be pulled from shaft. IMPORTANT: Care should be taken to ensure that the same number of shim washers are replaced behind impeller as were removed. These shim washers are located directly behind impeller. NOTE: Some motors use an open end 7/16 wrench across flats on rear of motor shaft to prevent shaft from turning. Other motor shafts have a screwdriver slot instead of flats. The precision lapped faces on mechanical seal are easily damaged. Handle your replacement seal carefully. 7. Carefully wipe polished surface of new seal seat with a clean cloth. 8. Wet rubber portion of seal seat with a light coating of soapy water. 9. Press new seal seat squarely into recess in adapter. If seal seat does not press squarely into cavity, it can be adjusted in place by pushing on it with a piece of pipe. Always use a piece of cardboard between pipe and seal seat to avoid scratching polished surface. 10. After seal seat is in place, be sure that it is clean and has not been marred.Self-Priming Chemical Pumps 11. Using a clean cloth, wipe shaft/shaft sleeve and make certain that it is perfectly clean. 12. Secure seal plate and adapter on motor mounting face. Carefully guide motor shaft through seal seat. 13. Wet inside rubber portion of new seal head with a light coating of soapy water. Slide head onto shaft/shaft sleeve. Seal head and seal seat will meet. Reinstall any shims which have been removed. . 14. Install impeller and reassemble pump. 15. A short run-in period may be necessary to provide completely leak-free seal operation.