longshipconstruction Posted 19 hours ago Share Posted 19 hours ago Hi all, looking for some guidance of what I need to fix an oil leak at my oil cooler. I am not getting any coolant contamination, only an external leak. 2000 CH613 E7 460 with around 2m miles and 50k hrs i believe it’s leaking oil from both sides of the top 1” crossover pipe to the oil filter housing, and possibly both sides of the lower “log” section. Should oil be able to leak from the lower gaskets, or does that seal coolant? It’s hard pinpoint as the fan has blown oil all over everything. Only able to upload one photo. Am I correct in thinking I can remove only the upper section and reseal the oil side without draining the coolant and pulling the whole cooler? It’s always had a small oil leak in the 6 years I’ve owned it, but this sub zero weather this year seems to have opened it up much worse. Thank you for any insight. Quote Link to comment https://www.bigmacktrucks.com/topic/76378-mack-e7-oil-cooler-leaking-oil-externally/ Share on other sites More sharing options...
longshipconstruction Posted 19 hours ago Author Share Posted 19 hours ago Picture before cleaning it up. Quote Link to comment https://www.bigmacktrucks.com/topic/76378-mack-e7-oil-cooler-leaking-oil-externally/#findComment-590616 Share on other sites More sharing options...
Joey Mack Posted 17 hours ago Share Posted 17 hours ago Yes, be aware that the oring inside the filter housing is a bit smaller around then the one under the tube mount. Quote Link to comment https://www.bigmacktrucks.com/topic/76378-mack-e7-oil-cooler-leaking-oil-externally/#findComment-590630 Share on other sites More sharing options...
longshipconstruction Posted 13 hours ago Author Share Posted 13 hours ago Thank you Joey Mack, good to know. I see the reseal kits online show 3 of the hexagon shaped gaskets, does the middle gasket seal oil on one side of the cartridge when it gets sandwiched in the lower section? I suspect my oil leak is up top but if that doesn’t solve it I’m assuming I’ll need to dig into the lower section. Quote Link to comment https://www.bigmacktrucks.com/topic/76378-mack-e7-oil-cooler-leaking-oil-externally/#findComment-590636 Share on other sites More sharing options...
Solution Joey Mack Posted 4 hours ago Solution Share Posted 4 hours ago Yes, it is likely thebtop tube only. Do not take the whole thing apart at this time. Just pull the 2,, 13mm bolts on the end of the top tube and you can remove the tube alone. The oring where the leak is, is inside the hole. You should not need RTV, but a light coating may be needed if you see a grove in the tube. I do use a very light amt on the oring where the bolts are to hold the oring in the groove during reassembly Quote Link to comment https://www.bigmacktrucks.com/topic/76378-mack-e7-oil-cooler-leaking-oil-externally/#findComment-590638 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.