Download - Hill Engineering
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SECTION 14.4 REPLACEMENT OF THE FLAT SPRING Refer to the parts list on page 43 Remove the main hydraulic cylinder as detailed on Page 34. Turn the cylinder (2) upside down so that the spring and securing bolts are facing upwards. Undo the socket head cap screws (14) retaining the spring (5) to the cylinder body (2) using the correct sized hexagon key. Remove the old spring and helpers (5) and discard. Remove any traces of locking compound from the screw threads. Apply thread locking compound to the threads of all screws. Fit the new spring (5) and helpers into position and align the holes in the spring retaining plate (15) ensuring the bevel is in the correct position. Loosely start all retaining pins into their relative tapped holes in the base of the cylinder. Hold the spring square to the cylinder axis and tighten all retaining screws using the correct sized hexagon key. Finally torque all screws up to their correct value (see table below). The cylinder is identified by a part number stamped into the upper side of the block beside the hose connection ports. Cylinder size Screw size Torque wrench setting (Nm) 3T M8 40 5T M10 77 7T M12 135 13T M14 215 20T M16 325 25T M16 325 35T M20 640 65T M16 325 100T M16 325 Page 38 of 47 Issue 1O 04/15 Tefra manual