Rob Posted February 9, 2021 Share Posted February 9, 2021 (edited) Seems like 2004 was the start of the "AI" series engine and the EGR problems? Friend has a 2001 E7-427 with a little over 1.2M on the clock and it's been a very good engine without any emissions related failures. From what I've seen those air compressors such as the original poster has can be troublesome to get a replacement that holds up long. Another friend has replaced his twice since the original went bad at 900K. The first replacement didn't go 50K before pushing oil, and the second replacement about the same. The third replacement is just a few months old and still going from what I understand. All sourced directly from Mack. Edited February 9, 2021 by Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468636 Share on other sites More sharing options...
storkmack Posted February 9, 2021 Share Posted February 9, 2021 We have a few Granites with over a Mil on the original motor. I credit it to luck and maybe our preventive Maintene program. We also have that barely made 800k before they shit the bed. Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468637 Share on other sites More sharing options...
Joey Mack Posted February 9, 2021 Share Posted February 9, 2021 I always liked the Bendix Tu-Flow compressors better than those wabco"s.. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468643 Share on other sites More sharing options...
Rob Posted February 9, 2021 Share Posted February 9, 2021 Both Bendix, and Midland are time proven designs. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468644 Share on other sites More sharing options...
Joey Mack Posted February 9, 2021 Share Posted February 9, 2021 Heck, I forgot about midlands. yes they are good as well.. Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468645 Share on other sites More sharing options...
trucking251 Posted February 9, 2021 Author Share Posted February 9, 2021 I'm thinking because of the hole in hose it's sucking dirty air through compressor, I just got truck, so I don't know how long it's been doing this. Dealer claims no issues before it made it's journey from PA to Mass, he says turbo went on way here. Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468653 Share on other sites More sharing options...
Vmac3 Posted February 9, 2021 Share Posted February 9, 2021 (edited) 3 hours ago, Joey Mack said: I always liked the Bendix Tu-Flow compressors better than those wabco"s.. Aren't they cheaper to buy Joey? Edited February 9, 2021 by Vmac3 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468654 Share on other sites More sharing options...
Joey Mack Posted February 9, 2021 Share Posted February 9, 2021 (edited) Yes and bolt right in,, just have to make new coolant hoses, and re-locate intake and output pipes based on application. I suggest buyin the offset intake nipple for the Bendix.. You can use this to get the right part if needed... CH613/118032... Thats one of my old trucks... I have gotten remans from outside truck parts vendors for under $400.00...Jojo Edited February 9, 2021 by Joey Mack 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468685 Share on other sites More sharing options...
Rob Posted February 10, 2021 Share Posted February 10, 2021 I like the Midland 1300, and 1600 series myself as the valves and head are very easy to service should maintenance be required. Cost is about the same for a Bendix Tu-Flo 501 and a Midland also so six of one, 1/2 dozen of the other. Change or service your air drier with the compressor maintenance or replacement too. 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468697 Share on other sites More sharing options...
Joey Mack Posted February 10, 2021 Share Posted February 10, 2021 air dryer and D-2 governor at the same time... Next time i look at a midland pump issue, I will look into repair kits. Thanks rob... Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468698 Share on other sites More sharing options...
Rob Posted February 10, 2021 Share Posted February 10, 2021 PAI markets a very good, complete maintenance kit for the compressors. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468700 Share on other sites More sharing options...
Joey Mack Posted February 10, 2021 Share Posted February 10, 2021 Sweet, thanks again... The last '90 E-7 I built, was 90 percent P.A.I. it's been 8 months, still gettin it done... jojo Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-468701 Share on other sites More sharing options...
trucking251 Posted May 18, 2021 Author Share Posted May 18, 2021 UPDATE: So to recap I started out with a blown turbo. Had oil dumping out exhaust pipe fittings, no oil on intake side at all. Bearing was shot in turbo. Ok so new turbo on and also replaced small section of hose with hole you see in picture, no more oil out exhaust, but.... Picture dumping a 5 gallon pail of oil on the compressor in picture. Oil everywhere! had oil in my tanks and out purge valve. Put on new compressor, duh. Well that fixed oil inside system but now still have massive amounts of oil everwhere in this area. Have completely degreased motor and tried to find leak 6 times. No oil until after I drive it, can sit for an hour idling, no oil. Back head oily so I replaced valve cover gasket, no luck. Intake side of head oily, exhaust side (side with most oil everywhere) dry around head gasket, but is this because close to exhaust and burning off????? pulling my hair out. no loss of power, smoke, coolant in oil vice versa. I'm at a loss!!! Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/page/2/#findComment-474036 Share on other sites More sharing options...
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