Jocko Posted May 2, 2011 Share Posted May 2, 2011 hey guys im about to change the connecting rod bearings in the 1959 mack end673,and i was wondering when i put the connecting rod bolts back in how pounds of tourch each bolt should have,also heres an update of what my dash looks like nowmack b 2.bmp Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/ Share on other sites More sharing options...
Jocko Posted May 2, 2011 Author Share Posted May 2, 2011 tjis is what it used to look likemack3.bmp Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77202 Share on other sites More sharing options...
fifth wheel Posted May 2, 2011 Share Posted May 2, 2011 hey guys im about to change the connecting rod bearings in the 1959 mack end673,and i was wondering when i put the connecting rod bolts back in how pounds of tourch each bolt should have,also heres an update of what my dash looks like now150 ft/lbs.-oiled.FW Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77205 Share on other sites More sharing options...
Jocko Posted May 3, 2011 Author Share Posted May 3, 2011 thanks Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77206 Share on other sites More sharing options...
theakerstwo Posted May 3, 2011 Share Posted May 3, 2011 Like been stated 150lbs but if you dont know make sure to get the rod cap and rod pushed over to one side before tighten so you end up with .007 or more side end play in the rod and cap against the crank. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77212 Share on other sites More sharing options...
Freightrain Posted May 3, 2011 Share Posted May 3, 2011 When building my motors, I usually slip some feeler gages inbetween the rods to keep them tight and aligned on the journal. Keeps from cocking the cap or bearing when pulling on it with a torque wrench. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77244 Share on other sites More sharing options...
Mike Posted May 3, 2011 Share Posted May 3, 2011 When building my motors, I usually slip some feeler gages inbetween the rods to keep them tight and aligned on the journal. Keeps from cocking the cap or bearing when pulling on it with a torque wrench. I'll have to agree Larry, thats the best way to get the clearance on any motor, is to use the gauges. Micrometers are a good thing to have also in your tool box. I'm so pickie about mine I keep them in the house away from the humidity. mike Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77253 Share on other sites More sharing options...
theakerstwo Posted May 4, 2011 Share Posted May 4, 2011 On a mack rod it is easy to burn the thrust side of the crank and rod if not done right. I aways snug up the rod bolts and then tap with a hammer the rod to one side withe cap and then you have all that is possible.Its best to replace the rod bolts on the later engines but the older rods i have not seen any problems with the bolts. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77265 Share on other sites More sharing options...
Jocko Posted May 8, 2011 Author Share Posted May 8, 2011 ok i think i have a problem,when i took the oil pan off of the truck to do the connecting rod bearings,one of the brass thrust bearings came off and was sitting in the oil pan.can someone tell me how this could happen and how i can fix it Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77515 Share on other sites More sharing options...
rhasler Posted May 8, 2011 Share Posted May 8, 2011 ok i think i have a problem,when i took the oil pan off of the truck to do the connecting rod bearings,one of the brass thrust bearings came off and was sitting in the oil pan.can someone tell me how this could happen and how i can fix itThere should be a rivet or pin in the main cap that can wear out. If I remember it comes in the thrust bearing kit. Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77516 Share on other sites More sharing options...
Jocko Posted May 8, 2011 Author Share Posted May 8, 2011 what would i have to take out to get to that Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77517 Share on other sites More sharing options...
theakerstwo Posted May 8, 2011 Share Posted May 8, 2011 what would i have to take out to get to thatA main brg cap.Look at it and question your self first do you want to do this along. May be better if you get some one to help you the first time. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77520 Share on other sites More sharing options...
rhasler Posted May 8, 2011 Share Posted May 8, 2011 what would i have to take out to get to thatYou just need to get the #4 main cap down so you can get to the pins. There should be one on each side of the #4 main cap. Check the thrust surfaces on the crank and the block while you have it down. Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77522 Share on other sites More sharing options...
Jocko Posted May 9, 2011 Author Share Posted May 9, 2011 i apprieciate the help guys,i didnt state this before but the thrust bearing that came off was the top one,and im preety sure that there is no pin on the top,how could the top one of come off Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77528 Share on other sites More sharing options...
Jocko Posted May 12, 2011 Author Share Posted May 12, 2011 how much tourche goes on the brg caps Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77664 Share on other sites More sharing options...
Mike Posted May 12, 2011 Share Posted May 12, 2011 how much tourche goes on the brg caps Jocko, One Hundred and Fifty foot pounds of Torque. Do you have a manual? If not, can someone post the torque specs. for Jocko? I would if I knew how. I don't have a scanner. I also borrow a computer at my g/f house. Thanks mike Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77669 Share on other sites More sharing options...
Jocko Posted May 12, 2011 Author Share Posted May 12, 2011 ok thanks,i wasnt sure if it was the same as the connecting rod bolts,and also i dont have a manual,if someone could post the tourque specs that would be great Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77672 Share on other sites More sharing options...
Mike Posted May 12, 2011 Share Posted May 12, 2011 ok thanks,i wasnt sure if it was the same as the connecting rod bolts,and also i dont have a manual,if someone could post the tourque specs that would be great When I go home tonight i'll get my manuel, but it may be tomorrow night before I can post it. If I can get someone's help in posting. mike Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77675 Share on other sites More sharing options...
rhasler Posted May 12, 2011 Share Posted May 12, 2011 Barry posted the specs in the wiki: http://www.bigmacktrucks.com/index.php?app=tutorials&article=52I think the fits and limits are posted in the wiki somewhere too. Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77676 Share on other sites More sharing options...
fifth wheel Posted May 12, 2011 Share Posted May 12, 2011 5/8-150ft/lbs11/16 200ft/lbsFW Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77687 Share on other sites More sharing options...
Mike Posted May 12, 2011 Share Posted May 12, 2011 Thanks Men, for helping out when needed. I had not seen this posting from Barry. I brought my MOTOR'S Manual to work this morning to take a zerox copy of the info needed, but this is much faster. Thanks Barry mike Quote Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77691 Share on other sites More sharing options...
other dog Posted May 12, 2011 Share Posted May 12, 2011 hey guys im about to change the connecting rod bearings in the 1959 mack end673,and i was wondering when i put the connecting rod bolts back in how pounds of tourch each bolt should have,also heres an update of what my dash looks like nowLooking good! Quote Producer of poorly photo-chopped pictures since 1999. Link to comment https://www.bigmacktrucks.com/topic/18933-connrecting-rod-bearings/#findComment-77692 Share on other sites More sharing options...
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