TM   5-2815-241-34&P CYLINDER  BLOCK  -  CONTINUED ACTION LOCATION ITEM REMARKS 31. Adapter plate (6) Torque  reaction bar  (8) Install  into  place. 32.  ST-1081  boring tool (4) Drive gear (9), 1/2- inch drive flex drive  adapter  (10) and  1/2-inch  porta- ble  electric  drill  (11) Engage  1/2-inch  drive  flex  drive  adapter into  1/2-inch  portable  electric  drill, fasten in place, and engage onto drive gear. WARNING Safety goggles must be worn to prevent eye injury caused by flying steel chips. NOTE Be sure ST-1081 boring tool drive shaft is in maximum up position before turning on drill. 33. 1/2-inch    portable electric  drill  (11) a. Using  1/2-inch  portable  electric  drill, apply  a  slight  downward  pressure  until maximum depth of bore is complete. b. Pull  drive  shaft  of  ST-1081  boring  tool  up until  shaft  is  in  up  position. 34. Cylinder block (1) ST-1081  boring tool  (4) Remove from cylinder block. TA   242437 2-157