CE WH PHG 250 0808 Copyright 2008 by Wurth 05 0194 STEP 1 Mill the damaged thread using wrenchTbar A and milling tool B Correct milling depth is reached once the stop of tool B is touching the base material Make sure the milling tool is not tilted STEP 2 Place tap C on tool A and cut the thread Blow out debris thor oughly and remove oil and grease from the newly cut thread STEP 3 Firmly tighten socket head cap screw of insertion tool D with hexagon socket wrench F and screw insert onto BIGSERT in sertion tool D Apply universal gasket joining compound DP 300 Art No 890100048 G on the upper part of the insertion collar The insertion which has been screwed onto tool D and coated with DP 300 G on the up per part of the collar is now screwed into the precut thread by using an appropriate hexagon socket Turning the socket head cap screw to the left will relieve the tension from the insertion tool D Remove the insertion tool D from the insert by using the appropri ate hexagon socket STEP 4 Insertion tool E into wrenchT bar A Turn the tool into the in sert Locking the thread is complete when suddenly the tool can be turned with ease remove tool from the insert Repair is complete Spark Plug Thread Repair If repair with TIMESERT is no longer possi ble Threads which have been previously re paired or cut too big can be renewed with the BIGSERT insert The BIGSERT insert compromises a 4fold torque lock out The BIGSERT external thread is M18 x 15 the internal thread M 14 x 125 Maximum diameter for repair should be 163 mm or 640 respectively The lower portion of the threads comprise grooves for 4 metal pins When inserting the insert these pins are pressed outwards into the base material The locking effect of these pins guarantees 100 safety against torqueout of the insert BIG SERT Spark Plug Repair Kit Art No 6991700 M14 x 125 Tools A Wrench with TBar B Reamer C Tap D Locating Tap E Insertion Tool F Socket Head Wrench G DP 300 Art No 89010048 BIGSER T BIGSERT Spark Plug Inserts Size Threads Washer Seat Inserts Kits per Inch Insert length Art No available Inches mm 14 125 370 94 6991710 6991700 14 125 600 15 6991712 6991700 14 125 660 168 6991713 6991700 14 125 6991700 AB C D E F G STEP 2 S TEP 3 S TEP 4