. Railway mechanical engineer . - the ballends are carefully ground so that a bearing from 1/32 in. to3/32 in. wide is obtained entirely around the ball to insurea tight joint when it seats in the header. The ends of the unit. Sugaesfed Mefhod of OrindiniTCutlers Using La/he Face Ph^or Qnrtd/na rhchine tYi/ft Infer-nal Orindinff tyhee/. Fig. 1—Tool for Facing the Ball Ends of Superheater Units are then protected by a wooden block, bolted in place. Whena superheater has to be removed from a locomotive duringrepairs the unit ends should be protected by blocks in thismanner, as otherwise the seat
. Railway mechanical engineer . - the ballends are carefully ground so that a bearing from 1/32 in. to3/32 in. wide is obtained entirely around the ball to insurea tight joint when it seats in the header. The ends of the unit. Sugaesfed Mefhod of OrindiniTCutlers Using La/he Face Ph^or Qnrtd/na rhchine tYi/ft Infer-nal Orindinff tyhee/. Fig. 1—Tool for Facing the Ball Ends of Superheater Units are then protected by a wooden block, bolted in place. Whena superheater has to be removed from a locomotive duringrepairs the unit ends should be protected by blocks in thismanner, as otherwise the seats will be damaged. This willnecessitate more work in order to get a satisfactor}- finish onthe ball end. In refacing the seats on the unit ends, careshould be taken to retain the spherical shape with a radius of1-1/16 in. Great care should be exercised not to remove toomuch metal when truing up the seats. Unless a unit has beendamaged so that it is grooved or cut, there is no need offmishing the end with a cutting tool as a light grinding isusually sufficient. The Draper cutting tool with the offsetshank should not be used for this work, as in the hands ofthe average man it almost invariably results in destroying the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
