mcratchet1 Posted May 3, 2023 Share Posted May 3, 2023 I have a 2007 Mack mr688 the top carrier is leaking into bottom one over filling it. Is there a seal inside that separates them? Thanks! Quote Link to comment Share on other sites More sharing options...
Solution Popular Post MACKS Posted May 3, 2023 Solution Popular Post Share Posted May 3, 2023 No check the bottom hot,after running a few miles,the bottom splashes lube up top and the excess drains back down,if the bottom is still over full hot then you have to much lube .. 3 Quote Link to comment Share on other sites More sharing options...
fjh Posted May 3, 2023 Share Posted May 3, 2023 13 minutes ago, MACKS said: No check the bottom hot,after running a few miles,the bottom splashes lube up top and the excess drains back down,if the bottom is still over full hot then you have to much lube .. That said pull the back plug let it drain till it stops flowing That is the correct level! If its still leaking after that you may have a crack in the diff housing specially if it has a torque rod to the frame from the back! 2 Quote Link to comment Share on other sites More sharing options...
Popular Post mechohaulic Posted May 3, 2023 Popular Post Share Posted May 3, 2023 have seen a number of times the complaint of rears over full .why won't top stay full!. not suppose to as stated . once had a customer trying to keep power divider housing full!! " it keeps going down" . after a rebuild, the initial three point fill =power divider / top carrier/ rear housing: level needs only to be check in rear housing. 2 2 Quote Link to comment Share on other sites More sharing options...
mcratchet1 Posted May 3, 2023 Author Share Posted May 3, 2023 Ok great thanks, just wanted to make sure! Quote Link to comment Share on other sites More sharing options...
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