LUBRICATION AND ADJUSTMENT OF BEARINGS 55 



urements may now be made from the line to the crank- 

 disc and pin, in order to determine how much, if any, the 

 shaft has been out of line. By doing this before the old 

 babbitt is disturbed, you will be able to tell later just how 

 much the shaft must be moved in order to correct the 

 alignment When this has been done, the shaft must be 

 taken out and the old babbitt removed from the box and 

 all grease and dirt or metal, etc., cleaned from it. When 

 the box is properly cleaned, replace the shaft, letting the 

 disc end rest on blocks, one or two of which should be 

 wedge-shape so that the shaft may conveniently be raised 

 or lowered. The shaft should now be brought to the 

 proper height so that its center is exactly on a level with the 

 line. Now, by carefully measuring to the line, the shaft 

 should be moved forward or rearward until the front and 

 rear portions of the crank-disc rim are exactly the same 

 distance from the line. When this is accomplished, the 

 crank-shaft will be at right angles to the bore of the cylin- 

 der and the shaft will be in its proper position "fore and 

 aft." The shaft should now be moved along its axis until 

 the crank-pin is divided into two equal parts by the line. 

 All of the measurements should be made very carefully 

 and accurately, and verified two or three times. The bab- 

 bitt should be of the best quality Case grade "A" being- 

 suitable. 



Both halves of the bearing can be run at the same time, 

 or the halves run separately as preferred. It is usually 

 best to pour the lower half first. The lower edge must be 



