Ezrider Posted October 9, 2016 Share Posted October 9, 2016 i understand the plugs in the ends of the rocker shafts are known to pop out on this engine. iv had it happen twice now.its been the same one both times and both times i did a less than ideal fix by just re-installing the old plug. first time was about 2 years ago but this last time was on Sunday night when i went to leave town i lost the second stage of jakes and noticed a drop in oil pressure. so i turned back around pulled back into the shop at 11pm left again at 1:45am and still got my load on time.i have heard there is a fix for this problem by threading the ends of the shaft and installing threaded in plugs rather than the freeze plug style. or a rivet of some kinddoes any one here have any knowledge or details on this fix? i am thinking this winter id like to fix this once and for all Quote Link to comment https://www.bigmacktrucks.com/topic/47190-rocker-arm-shaft-end-plugs-2000-e-7/ Share on other sites More sharing options...
fjh Posted October 9, 2016 Share Posted October 9, 2016 When you installed the plugs did you install them with locktight ? You cant just pop them back in and expect them to stay! As for threading them I have never had them fall out twice, but i imagine it would work ! If it happens again install clean and dri with lock tight! Quote Link to comment https://www.bigmacktrucks.com/topic/47190-rocker-arm-shaft-end-plugs-2000-e-7/#findComment-348252 Share on other sites More sharing options...
Mackpro Posted October 10, 2016 Share Posted October 10, 2016 We always install new plugs and use the Loctite flange sealant (green in color). I cant remember the freeze plug size but its not metric. I think you can get one from Napa if no dealer is close by. Quote Link to comment https://www.bigmacktrucks.com/topic/47190-rocker-arm-shaft-end-plugs-2000-e-7/#findComment-348323 Share on other sites More sharing options...
Ezrider Posted October 12, 2016 Author Share Posted October 12, 2016 used red loctite. my local napa didn't have them. do have a mack dealer near by but both times iv had the problem they were not open at the time and i needed to get going. ill probably get one in my next parts order though so ill have one on hand. if there is a better solution though i would prefer to do something different with it. Quote Link to comment https://www.bigmacktrucks.com/topic/47190-rocker-arm-shaft-end-plugs-2000-e-7/#findComment-348494 Share on other sites More sharing options...
fjh Posted October 12, 2016 Share Posted October 12, 2016 I have done this many times with red and never had an issue ,as long as both peices are clean and dri (hit them with some brake clean) and wipe dri They have stayed in place for me everytime! Quote Link to comment https://www.bigmacktrucks.com/topic/47190-rocker-arm-shaft-end-plugs-2000-e-7/#findComment-348538 Share on other sites More sharing options...
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