fjh Posted yesterday at 12:40 PM Share Posted yesterday at 12:40 PM 12 hours ago, Moparmike said: Please post pic if you don’t mind I haven’t had time to check it out much just pull the blow by filter it was full of slug not there before but oil is fine no water thanks the sludge indicates water or coolant! If you in a damp climate this could be an indication your running cold! How ever you got other symptoms! if your going to keep running it take an oil sample ASAP! if its just water not a great deal! But if its coolant Big DEAL ! Also this could be a Turbo issue I have seen these pressure up the Base before! Just saying! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593400 Share on other sites More sharing options...
fjh Posted yesterday at 12:44 PM Share Posted yesterday at 12:44 PM 5 minutes ago, Joey Mack said: The breather is directly connected to the port in the top of the centrifugal filter pad. I put air to it and it only connects to the port. when did you replace the centrifugal filter last? is the filter housing dented bad enough to stop the filter from spinning? is the spindle worn so bad that it stops the filter from spinning? before you drop the oil pan, check the centrifugal filter setup.. post pics of the housing and the spindle focusing on where the filter spins. Jojo Joey what ever link you posted Aint workin! Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593401 Share on other sites More sharing options...
Joey Mack Posted yesterday at 12:59 PM Share Posted yesterday at 12:59 PM Fjh. I copied and pasted the pics. I can see them. Thats odd. I will try again later, Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593402 Share on other sites More sharing options...
fjh Posted yesterday at 01:08 PM Share Posted yesterday at 01:08 PM 7 minutes ago, Joey Mack said: Fjh. I copied and pasted the pics. I can see them. Thats odd. I will try again later, I am quite confused about this post any how I Probably should just observe! 🙏 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593404 Share on other sites More sharing options...
Joey Mack Posted yesterday at 05:25 PM Share Posted yesterday at 05:25 PM Here we go.. Still dont know what I did wrong the first time. Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593418 Share on other sites More sharing options...
Moparmike Posted yesterday at 06:42 PM Author Share Posted yesterday at 06:42 PM 6 hours ago, fjh said: the sludge indicates water or coolant! If you in a damp climate this could be an indication your running cold! How ever you got other symptoms! if your going to keep running it take an oil sample ASAP! if its just water not a great deal! But if its coolant Big DEAL ! Also this could be a Turbo issue I have seen these pressure up the Base before! Just saying! With the water I think it all came from when compressor went out haven’t seen any since but haven’t drove it a lot cause don’t want to mess it up any worst Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593424 Share on other sites More sharing options...
fjh Posted 6 hours ago Share Posted 6 hours ago 20 hours ago, Joey Mack said: Here we go.. Still dont know what I did wrong the first time. Hummmmm! Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593478 Share on other sites More sharing options...
Joey Mack Posted 5 hours ago Share Posted 5 hours ago Fjh. The hole in the top of the spinner pad is a vent and goes out the external vent. What gets me is how the oil is not draing back into the engine through the 1 inch line at the bottom of the spinner housing ? Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593479 Share on other sites More sharing options...
fjh Posted 5 hours ago Share Posted 5 hours ago 10 minutes ago, Joey Mack said: Fjh. The hole in the top of the spinner pad is a vent and goes out the external vent. What gets me is how the oil is not draing back into the engine through the 1 inch line at the bottom of the spinner housing ? Yup good question should be a straight shot to the pan thru the block there is it not! Last time I checked Gravity is still working ! Unless it was just air locked! If that draft vent was clogged! Hummmmm! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593481 Share on other sites More sharing options...
Joey Mack Posted 5 hours ago Share Posted 5 hours ago I guess a craked oil filter pad is possible, but ..... thats a stretch... i would be curious how many times the oil filters were super duper tight.. Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593483 Share on other sites More sharing options...
Geoff Weeks Posted 5 hours ago Share Posted 5 hours ago It is hard to know which way to turn, when only one set of eyes are on the truck, and we only "see" what is written. This isn't a knock on the poster, just if a clue isn't passed on, we will not know. @fjh said long ago that oil sample analysis would be prudent at this point, and I 100% agree, it will show what is in the pan even if no moisture/antifreeze is "seen" in the oil. Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593484 Share on other sites More sharing options...
Joey Mack Posted 5 hours ago Share Posted 5 hours ago Yes to an oil sample analisys. .a simple halo test will show right away that there is water in the oil, or even drain a quart into a clear jug and let it sit. Certainly need to know if its coolant, and not just condensation. Im still stuck on the bleeding breather..... Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593485 Share on other sites More sharing options...
Geoff Weeks Posted 4 hours ago Share Posted 4 hours ago 7 minutes ago, Joey Mack said: Im still stuck on the bleeding breather..... You sound like an Englishman I used to work with!😀 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593486 Share on other sites More sharing options...
Joey Mack Posted 4 hours ago Share Posted 4 hours ago Hope its a good thing... 👍 Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593487 Share on other sites More sharing options...
Geoff Weeks Posted 4 hours ago Share Posted 4 hours ago "bleeding, bloody, etc" was an expletive descriptor, "the bleeding nut was so tight, I had to get the smoke wrench". 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593488 Share on other sites More sharing options...
Mark T Posted 4 hours ago Share Posted 4 hours ago Get it up to temp, remove the turbo oil return and divert it into a pail with oil in it. Rev it up and look for bubbles. (which will be sorta violent in the pail) Potentially messy way to check, but ???? lot cheaper to clean up than an inframe for no good reason. Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593489 Share on other sites More sharing options...
cruiseliner64 Posted 1 hour ago Share Posted 1 hour ago 3 hours ago, Geoff Weeks said: "bleeding, bloody, etc" was an expletive descriptor, "the bleeding nut was so tight, I had to get the smoke wrench". Are you sure that guy wasnt from Dublin Ireland Geoff??? Amost everything a "Dub" ( thats what theyre called over here) is prefaced with the word "bleeding"... Me bleeding car broke down..me bleeding wife was giving me bleeding ear ache I went the bleeding football......🤣... Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593500 Share on other sites More sharing options...
Geoff Weeks Posted 1 hour ago Share Posted 1 hour ago Just now, cruiseliner64 said: Are you sure that guy wasnt from Dublin Ireland Geoff??? Amost everything a "Dub" ( thats what theyre called over here) is prefaced with the word "bleeding"... Me bleeding car broke down..me bleeding wife was giving me bleeding ear ache I went the bleeding football......🤣... Paul Bolton, Manchester area. Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593502 Share on other sites More sharing options...
cruiseliner64 Posted 1 hour ago Share Posted 1 hour ago 8 minutes ago, Geoff Weeks said: Bolton, Manchester area. Half Irish so Bolton/Manchester/liverpool is mostly of Irish decent..... Paul Quote Link to comment https://www.bigmacktrucks.com/topic/76478-2000-mack-rd688-e7-air-compressor-help/page/2/#findComment-593504 Share on other sites More sharing options...
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