67 1 5 5 9 3 3 3 7 7 11 2 2 2 6 6 10 4 8 1 1 4 4 8 12 Step 1 Spanner tight ensuring that 23 threads extend above nut Step 2 Tighten each bolt to onethird of the final required torque following the pattern as shown above Step 3 Increase the torque to two thirds following the pattern shown above Step 4 Increase the torque to full torque following the pattern shown above Step 5 Perform one final pass on each bolt working clockwise from bolt 1 at the full final torque Breakout Torque When loosening bolts a torque value higher than the tightening torque is normally required This is mainly due to corrosion and deformations in the bolt and nut threads Breakout torque cannot be accurately calculated however depending on conditions it can take up to 2 times the input torque to breakout The use of penetrating oils or antiseize products is always recommended when performing breakout operations Manufacturers rating of pressure and torque are maximum safe limits Good practice encourages using only 80 of these ratings Select the Correct Wrench Choose your Enerpac torque wrench using the untightening rule of thumb When loosening a nut or bolt more torque is usually required than when tightening For general conditions it can take up to 2 times the input torque to breakout Do not apply more than 75 of the maximum torque output of the tool when loosening nuts or bolts Conditions of Bolted Joints Humidity corrosion rust requires up to twice the torque required for tightening Sea water and chemical corrosion requires up to 2 12 times the torque required for tightening Heat corrosion requires up to 3 times the torque required for tightening Minimum Output Torque The recommended minimum torque value of a hydraulic wrench is 10 of the maximum rated value Torque Tightening Torque Procedure When torquing it is common to tighten only one bolt at a time this can result in Point Loading and Load Scatter To avoid this torque is applied in stages following a prescribed pattern Torque Sequence