cruiseliner64 Posted August 27 Share Posted August 27 Hi all,we were out in our Cruiseliner again and she started pouring out black smoke and went down on power.we stopped to investagate and discovered the V clamp on the exhaust side of the turbo had come off and jambed the turbine wheel solid.the bolt in the the V clamp had broken.we removed the turbo and took it to our loical turbo rebuilder who told us he can rebuild it but he needs to know if parts can be got and who made the turbos for Mack at this time.(1982)its the EM6 300 engine.he said in all his time he has never worked on a Mack turbo.any help on identifying the turbo would be a big help to us.. Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/ Share on other sites More sharing options...
fjh Posted August 27 Share Posted August 27 5 minutes ago, cruiseliner64 said: Hi all,we were out in our Cruiseliner again and she started pouring out black smoke and went down on power.we stopped to investagate and discovered the V clamp on the exhaust side of the turbo had come off and jambed the turbine wheel solid.the bolt in the the V clamp had broken.we removed the turbo and took it to our loical turbo rebuilder who told us he can rebuild it but he needs to know if parts can be got and who made the turbos for Mack at this time.(1982)its the EM6 300 engine.he said in all his time he has never worked on a Mack turbo.any help on identifying the turbo would be a big help to us.. Paul 5 minutes ago, cruiseliner64 said: Hi all,we were out in our Cruiseliner again and she started pouring out black smoke and went down on power.we stopped to investagate and discovered the V clamp on the exhaust side of the turbo had come off and jambed the turbine wheel solid.the bolt in the the V clamp had broken.we removed the turbo and took it to our loical turbo rebuilder who told us he can rebuild it but he needs to know if parts can be got and who made the turbos for Mack at this time.(1982)its the EM6 300 engine.he said in all his time he has never worked on a Mack turbo.any help on identifying the turbo would be a big help to us.. Paul It could be schwitser or borgwarner if the fuel pump is rob bosch it will likly be a schwitser if ambc borg! Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557696 Share on other sites More sharing options...
cruiseliner64 Posted August 27 Author Share Posted August 27 Many thanks for that.it has a Bosch pump.ill tell our man that.it has a Mack i d plate on the turbo but we are unable to read it as it has decayed to the point that Mack is all that can be read. Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557700 Share on other sites More sharing options...
Joey Mack Posted August 27 Share Posted August 27 S-400 SO-41 ?? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557703 Share on other sites More sharing options...
Solution fjh Posted August 27 Solution Share Posted August 27 Sound wise the Schweitzer tended to have a high pitch whistle to them most of the time! Might be a clue for you! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557705 Share on other sites More sharing options...
cruiseliner64 Posted August 27 Author Share Posted August 27 Thats a great clue as our Cruiseliner had a great sounding whistle to her.many thanks Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557711 Share on other sites More sharing options...
cruiseliner64 Posted August 29 Author Share Posted August 29 Hi all,the turbo guy came back to me with really bad news...the turbo is toast.he found a foreign object stuck in the exhaust turbine which came from inside the engine.its cast iron and shattered the turbine wheel.it seems to be to big to have passed through an exhaust valve so we are hopeing its from the exhaust manifold.we are going to strip it on saturday and do a cylinder leak test...wish us luck.anyone see anything like this before? Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557802 Share on other sites More sharing options...
Joey Mack Posted August 29 Share Posted August 29 that looks like the bottom of a bolt hole that was pushed out by a bolt that was installed too deep.. i need to think on it.. any other pictures? wide out rather than zoomed.. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557803 Share on other sites More sharing options...
Joey Mack Posted August 29 Share Posted August 29 what is the inner diameter of the piece? 10 mm I presume? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557804 Share on other sites More sharing options...
fjh Posted August 29 Share Posted August 29 Bummer ! Nope sorry no ideas here ! Could be part of a bad manifold casting! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557805 Share on other sites More sharing options...
cruiseliner64 Posted August 30 Author Share Posted August 30 Hope your right joey.the guy said it was covered in soot so has been in there for a bit.not sure on the diameter on the inside.really hope the engine is ok🙏ill try get more pictures.thanks. Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557807 Share on other sites More sharing options...
Joey Mack Posted August 30 Share Posted August 30 are there any odd bolts mounting brackets to the manifold? are the turbo mount bolt correct, or been replade with longer ones? you can check those holes by simply looking in them with a flash light inserted into the turbo ports. if you see the light coming from a bolt hole, you likely found where the slug came from.. I'm pullin' for ya... jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557808 Share on other sites More sharing options...
Joey Mack Posted August 30 Share Posted August 30 Bedtime for me here in the states.. good luck sir. Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557809 Share on other sites More sharing options...
cruiseliner64 Posted August 30 Author Share Posted August 30 Thanks joey i will check all that out.yeah it was 1.30am when i put up the last post.its now 9am here in ireland.i cant thank you enough for the support.having never worked on Macks before its great to be able to talk to those who have.every make of motor has their own quirks that are learned with experence... Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557812 Share on other sites More sharing options...
cruiseliner64 Posted August 30 Author Share Posted August 30 Heres a few more pics of the object.its 16mm one side 11mm at the other and about 3mm thick.thanks for looking. Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557817 Share on other sites More sharing options...
Popular Post Freightrain Posted August 30 Popular Post Share Posted August 30 Could have been flashing inside the exhaust manifold that finally broke loose? Could be exhaust port side of head also? Have to dig around and look for a clean spot where it might have chipped off. 3 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557821 Share on other sites More sharing options...
Joey Mack Posted August 30 Share Posted August 30 It would be great if you had a bore scope to stick in the turbo port. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557822 Share on other sites More sharing options...
cruiseliner64 Posted August 30 Author Share Posted August 30 Thanks guys for the suggestions.just home from work so will be checking it out in the morning.my son hopes to borrow a scope from work to see if we can see anything.....we will let you know if we come up with anything. Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557837 Share on other sites More sharing options...
Popular Post Mark T Posted August 30 Popular Post Share Posted August 30 Just a thought, but you say what a rarity that truck is there. I wonder if some component failed on it at some point, and someone didn't do a thorough cleaning cause of scarcity of parts, like gaskets and such. No way that piece made it through an engine and it still has 6 live holes. 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557839 Share on other sites More sharing options...
cruiseliner64 Posted August 31 Author Share Posted August 31 Hi all,so we stripped the manifold off and can find nothing broken chiped or missing in the exhaust ports valves move smoothly when turning engine by hand.also cant see anything wrong with the manifold.we couldnt get the bore scope today but will have it tomorrow.we used a mirrow and light today and so far nothing.the scope will tell the full story.off to work now ohbthe joys..... Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557851 Share on other sites More sharing options...
Joey Mack Posted August 31 Share Posted August 31 Gosh, I hope you dodged a bullet.. can you cap the oil feed line for the turbo and put the fuel lines on and run it with manifold off and watch each port? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557857 Share on other sites More sharing options...
fjh Posted August 31 Share Posted August 31 36 minutes ago, Joey Mack said: Gosh, I hope you dodged a bullet.. can you cap the oil feed line for the turbo and put the fuel lines on and run it with manifold off and watch each port? Great minds buddy my thoughts exactly is that piece magnetic? Not lump of carbon? 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557859 Share on other sites More sharing options...
cruiseliner64 Posted August 31 Author Share Posted August 31 Hi all,yes the piece is magnetic,its cast iron as far as we can tell.i wonder if its off the exhaust turbine housing itself.it appears to have two vains around it which the exhaust travels before being fed onto the turbine.we cant see into it and we dont think the scope will fit in when we get it.i wiil see if i can block the oil feed and run the motor.see what it sounds like... thanks guys. Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557863 Share on other sites More sharing options...
Joey Mack Posted August 31 Share Posted August 31 it would be worth the extra time to cap the oil line and put the fuelines back on to run it, this way you can see what each cylinder is doing and hear what they say.. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557864 Share on other sites More sharing options...
cruiseliner64 Posted August 31 Author Share Posted August 31 I will do that joey.i think it would be worth it too.i want to be sure its in top condition before putting a new turbo on it.its a bit of a set back to the plans for painting it as the cost of the turbo has to come out of the budget for paint.but we will get there just take a bit longer.....thanks for all the help. Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74501-turbo-problems/#findComment-557866 Share on other sites More sharing options...
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