TM  10-3930-638-24&P 4-2.  ENGINE  MAINTENANCE  (cont) a. Cylinder Block Assembly (cont). STEP LOCATION ITEM ACTION REMARKS REASSEMBLY  (cont) b. Measure sleeve Position  plasti  gage  at  four  points  shown. (cont) protrusion Plasti gage must not protrude onto sleeve flange. Install clamping disc tool care- fully over sleeve as shown. Install 1 inch ball and clamping bar. Tighten hold dew] bolts evenly to 50 pounds foot torque. Then,  remove  clamping  bolts,  bar  and ball. Carefully remove clamping disc so as not to disturb plasti gage. Flattened plasti gage will be on clamping disc or block. Measure plasti gage. If sleeve pro- trusion varies more than 0.005 inch around  circumference,  replace  that  sleeve and  recheck 4-8