r686st Posted August 13, 2013 Share Posted August 13, 2013 I have a '91 RD690S as some of you may know and I'm putting new heads on it. I couldn't find out from Mack but I thought yall might know the sequence in which you torque the heads on the motor. It has a newer '96 EM7-300. Quote Link to comment Share on other sites More sharing options...
Back In Black Pulling Posted August 13, 2013 Share Posted August 13, 2013 most of the time you start in the middle and work your way out going from one side to the other Quote Link to comment Share on other sites More sharing options...
hatcity Posted August 13, 2013 Share Posted August 13, 2013 and you do them in a series.50 lb, then 100, then final 1 Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment Share on other sites More sharing options...
r686st Posted August 13, 2013 Author Share Posted August 13, 2013 Hatcity what should be the final? Quote Link to comment Share on other sites More sharing options...
Back In Black Pulling Posted August 13, 2013 Share Posted August 13, 2013 friend of mine just did on a 2000 , believe he told me 196 to 215 , that was the acert e7 Quote Link to comment Share on other sites More sharing options...
r686st Posted August 13, 2013 Author Share Posted August 13, 2013 Thanks. If anyone comes up with an exact number please let me know. Quote Link to comment Share on other sites More sharing options...
hatcity Posted August 14, 2013 Share Posted August 14, 2013 Hatcity what should be the final?shit if I know. just remember doing it one time for a company I worked for long ago Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment Share on other sites More sharing options...
thomastractorsvc Posted August 14, 2013 Share Posted August 14, 2013 The book I have says final torque5/8 head bolt studs and nuts 175 ft lbs5/8 head bolt cap screws is 220 ft lbs 9/16 head bolt 150 ft lbs3/4 head bolt 175 ft lbsV-8 head bolts 11/16 235 ft lbsValve Clearances 673,707,711,675,676 Cold Static adjustmentIntake .016 Exhaust .024865,866 intake .016 exhaust .026cyl head.pdf Quote Robert"I reject your reality and substitute my own." Link to comment Share on other sites More sharing options...
r686st Posted August 14, 2013 Author Share Posted August 14, 2013 So we're in agreement that that you start in the center and work outward alternating bolts? 1 Quote Link to comment Share on other sites More sharing options...
thomastractorsvc Posted August 14, 2013 Share Posted August 14, 2013 Click on the pdf and it will open with a diagram on the bottom of the page with a sequence of order you are suppose to tighten in. Quote Robert"I reject your reality and substitute my own." Link to comment Share on other sites More sharing options...
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