trucking251 Posted February 4, 2021 Share Posted February 4, 2021 2005 mack cv713 400 AI I think also called a e7. What is the contraption with all the hoses going to it under the turbo? There's a short rubber fitting with big hole in it and oil blowing out of it. Are these all vaccum lines? I'm a little lost here. Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/ Share on other sites More sharing options...
trucking251 Posted February 5, 2021 Author Share Posted February 5, 2021 I know this engine doesn't have EGR. It's not coolant lines, is it vaccum? any help would be great. Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468354 Share on other sites More sharing options...
Vmac3 Posted February 5, 2021 Share Posted February 5, 2021 Can you upload a pic and we can help you out some more. V Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468361 Share on other sites More sharing options...
Joey Mack Posted February 6, 2021 Share Posted February 6, 2021 W.T.F.?? Yes "V" we need to see a pic..🤔 Jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468380 Share on other sites More sharing options...
trucking251 Posted February 6, 2021 Author Share Posted February 6, 2021 So here is pic. Figured out it is air compressor. But what is the hose that has big hole in it? Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468402 Share on other sites More sharing options...
br549 Posted February 6, 2021 Share Posted February 6, 2021 That tube goes to the intake manifold on rear of driver side. It is feed for A/C intake, that will cause you to loose turbo pressure, causing low power. Need top replace hose. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468404 Share on other sites More sharing options...
trucking251 Posted February 6, 2021 Author Share Posted February 6, 2021 Do you think the small piece of rubber hose with hose clamp is original or a quick fix? Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468415 Share on other sites More sharing options...
Vmac3 Posted February 6, 2021 Share Posted February 6, 2021 You mentioned that it is leaking oil out of that hose. That would suggest that the air compressor has failed. Drain the air tanks and see if there is oil coming out of them. Also check the purge valve on the air drier for excessive amounts of oil. Thanks for the pic. V 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468416 Share on other sites More sharing options...
Joey Mack Posted February 6, 2021 Share Posted February 6, 2021 quick fix.. make sure the new hose can handle heat.... no wimpy hose 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468417 Share on other sites More sharing options...
Vmac3 Posted February 6, 2021 Share Posted February 6, 2021 2 minutes ago, trucking251 said: Do you think the small piece of rubber hose with hose clamp is original or a quick fix? That hose is a quick fix. If its blue in color then more than likely it is original. V 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468418 Share on other sites More sharing options...
fjh Posted February 7, 2021 Share Posted February 7, 2021 18 hours ago, Vmac3 said: That hose is a quick fix. If its blue in color then more than likely it is original. V Yup agree ! also there is a second hose like that one on the under side of the inlet manifold! check on that too!Your best to use a heavily braided coolant hose OR the proper Blue heavily braided hose from mack land! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468479 Share on other sites More sharing options...
trucking251 Posted February 7, 2021 Author Share Posted February 7, 2021 Thanks for info. I didn't mention that major amount of oil in exhaust, I assumed turbo and have new one on shelf ready to go in, would this cause oil in that hose? hoping to not have to replace compressor as well, seems to build air fine Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468485 Share on other sites More sharing options...
Joey Mack Posted February 7, 2021 Share Posted February 7, 2021 is there oil on the compressor side of the turbo? (the outlet) 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468488 Share on other sites More sharing options...
Joey Mack Posted February 7, 2021 Share Posted February 7, 2021 I just noticed your picture. I've been to the top of Mt. Washington twice.. I went up on a motorcycle once, it was great!. Jojo Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468489 Share on other sites More sharing options...
Mark T Posted February 7, 2021 Share Posted February 7, 2021 23 hours ago, trucking251 said: So here is pic. Figured out it is air compressor. But what is the hose that has big hole in it? That's called the hose that's going to make you buy a new compressor in this instance . Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468490 Share on other sites More sharing options...
Joey Mack Posted February 7, 2021 Share Posted February 7, 2021 Yes it is...... Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468491 Share on other sites More sharing options...
Mark T Posted February 7, 2021 Share Posted February 7, 2021 '05 is an EGR engine, and wouldn't have a turbocharged compressor (would it ?) 🤔 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468492 Share on other sites More sharing options...
Joey Mack Posted February 7, 2021 Share Posted February 7, 2021 If you are asking me..... what I mean is the output of the turbo is called the compressor side, in some terms... I also think his air comp. intake goes around the back of the head to the bottom of the rear of the intake manifold. i didnt see where it went to the elbow after the air filter... thank you, jojo Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468493 Share on other sites More sharing options...
trucking251 Posted February 7, 2021 Author Share Posted February 7, 2021 This is the "AI" motor. No EGR thank goodness. The air side of turbo goes to intercooler around front of motor. Really don't understand the purpose of all these hoses coming off the compressor. Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468496 Share on other sites More sharing options...
Joey Mack Posted February 7, 2021 Share Posted February 7, 2021 The hose with the hole in it, is the intake, the larger steel pipe is the output. the 2 #6 J.I.C. hoses is coolant flow , in-and-out, the 1/4" line is the signal line for the governor... Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468497 Share on other sites More sharing options...
Mark T Posted February 7, 2021 Share Posted February 7, 2021 AI most certainly is an EGR engine. I can almost remember the rigid line that hose with the hole in it rotting on those where it hides behind the engine on it's way up to the ducting from the air cleaner into the turbo. Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468498 Share on other sites More sharing options...
fjh Posted February 8, 2021 Share Posted February 8, 2021 Those often fail due to due to heat ,the compressor working because of overtime air leaks is the air drier purging every fifteen seconds ? ! Or clogged coolant lines! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468580 Share on other sites More sharing options...
trucking251 Posted February 8, 2021 Author Share Posted February 8, 2021 I promise. AI-400 has no EGR system. I get it now on compressor, that's just air feed in and out, so probably got a bunch of junk in there between the turbo failing and the hole. -( Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468583 Share on other sites More sharing options...
Popular Post Vmac3 Posted February 8, 2021 Popular Post Share Posted February 8, 2021 8 hours ago, trucking251 said: I promise. AI-400 has no EGR system. I get it now on compressor, that's just air feed in and out, so probably got a bunch of junk in there between the turbo failing and the hole. -( Your engine does have an EGR system. The egr system is integral. It works by using the valve timing and exhaust pressures to feed the cylinders with exhaust gas. The engine camshaft has an extra bump on the exhaust lobe to allow the exhaust gases to enter the cylinder during the intake stroke. If you take a look at the exhaust manifold you will find that the diameter is narrow. The engineers did this purposely to increase the back pressure in the exhaust manifold so to push the exhaust gases into the cylinder. V 4 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468618 Share on other sites More sharing options...
Joey Mack Posted February 9, 2021 Share Posted February 9, 2021 Bingo! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/65785-400-ai-question/#findComment-468624 Share on other sites More sharing options...
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