Mack Technician Posted November 28, 2017 Share Posted November 28, 2017 (edited) Gettting an education in the Land of Lincoln. New Volvo/Mack engine line. Some pretty neat stuff, hope it holds together as planned. . Edited December 1, 2017 by Mack Technician Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 (edited) big sign says Volvo, interior decorator obviously was leaning Mack..... Edited December 1, 2017 by Mack Technician Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 Volvo side of engine training room..... 13 liter. Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 (edited) Mack side of engine training room, MP7. Edited December 5, 2017 by Mack Technician Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 (edited) Impressed by the hollow camshaft. The lobes are floating in designated clocking and a driveshaft is pushed through. The center tube is then swedged to expand and lock the lobes onto the hollow shaft. Edited November 28, 2017 by Mack Technician 1 Quote Link to comment Share on other sites More sharing options...
Dirtymilkman Posted November 28, 2017 Share Posted November 28, 2017 Keep the updates coming. I love it. I don't understand the camshaft deal? Looking for weight savings? More durable? 1 Quote Link to comment Share on other sites More sharing options...
Popular Post carlotpilot Posted November 28, 2017 Popular Post Share Posted November 28, 2017 triple cost of replacement with greater freqency 4 Quote Link to comment Share on other sites More sharing options...
fjh Posted November 28, 2017 Share Posted November 28, 2017 37 minutes ago, carlotpilot said: triple cost of replacement with greater freqency 😂 yup real spensive sounding process and can’t see that screwing up.🙄 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 (edited) On 11/27/2017 at 7:09 PM, Dirtymilkman said: Keep the updates coming. I love it. I don't understand the camshaft deal? Looking for weight savings? More durable? Weight and savings. Unbelievable LIGHT! I have a pic my co worker took of me arm curling it with one arm at chest height (some grunting involved). If anyone told me they would build a 13 liter cam this old man could arm curl I'd have called them nuts. Unfortunately I cannot add more pics, there must be a cap on how many pics you can put on a post? They added a 120 pound compounder down stream of the turbo output. We won't see it on the off road machines. They cut and trimmed to keep the engine weight from increasing (multiplier). Once again emissions robs the gains of engineering. The instructor says this engine is likely the last step of diesel power we will see. Edited November 29, 2017 by Mack Technician Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted November 28, 2017 Share Posted November 28, 2017 Last steps of diesel now that is sad.But i believe it. Quote glenn akers Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 (edited) 11 minutes ago, theakerstwo said: Last steps of diesel now that is sad.But i believe it. CNG and battery power is entering stage right. Who really wants a truck that makes no sound.........O'school truckers will be suffering from sensory deprivation and fall asleep at the wheel out of boredom with the new machine . Edited November 28, 2017 by Mack Technician 1 Quote Link to comment Share on other sites More sharing options...
carlotpilot Posted November 28, 2017 Share Posted November 28, 2017 I can imagine that idea lasting maybe 2500 hours guess we will find out eventualy Quote Link to comment Share on other sites More sharing options...
41chevy Posted November 28, 2017 Share Posted November 28, 2017 (edited) 1 hour ago, Mack Technician said: The instructor says this engine is likely the last step of diesel power we will see. Diesel will still be here in 50 years. there are applications electric just will not be practical in. The method for doing the cams is a aero space process. The normal cams are forged and than machined / centerless ground. Volvo /MACK set up is a tube most likely molly based steel, the lobs are formed as a stick , machines and sliced off. The "swege" process is actually called Cryo-Fitting . The cam lobes are chilled in liquid nitrogen and placed in position on the tube.They will not move when they reach air temp. The assembly is than heat treated and final finished on lobes and bearing journals. Been used in Top Fuel engines for 3 to 4 years and they survive 9000 h.p. 97% nitro methane. The cams are lighter, have more torsional "give" and less rotating mass = less wear and spool up faster. Paul As for keeping the driver alert. . . .electro shock seats Edited November 28, 2017 by 41chevy 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
57 bcr Posted November 28, 2017 Share Posted November 28, 2017 Keep your pockets sewn up while your here Mack Techniician,Illinois needs the money! Keep clicking your heels together and repeat "there's no place like home"! Lol! Al 1 1 Quote IF YOU BOUGHT IT, A TRUCK BROUGHT IT..AND WHEN YOU'RE DONE WITH IT, A TRUCK WILL HAUL IT AWAY!!! Big John Trimble,WRVA Link to comment Share on other sites More sharing options...
Jamaican Bulldog Posted November 28, 2017 Share Posted November 28, 2017 1 hour ago, Mack Technician said: The instructor says this engine is likely the last step of diesel power we will see. To paraphrase " the demise of the internal combustion engine is greatly exaggerated". Same thing happening in the car end and right truck end of the auto industry where I am. Constant advances in the good old internal composition tech will keep them viable foe many years to come. However there are so many interest groups often funded by tax payer money trying to undermine it to make alternatives seem more viable future powertrain 2 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 1 hour ago, 41chevy said: They will not move when they reach air temp. The assembly is than heat treated and final finished on lobes and bearing journals. I asked the instructor about trueing the cam and he said once the lobes are on the shaft it has no follow up machining. 1 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 (edited) The fuel rail design raised a few heckles. Whole rail system is mounted under the valve cover. Makes for a nice clean engine, but a bit of a plumbing cluster under the cover. Other issue is any leaking goes right to sump. Advantage is no element exposure. Lines get replaced after every removal. The instructor was debating diagnostics on the internal rail system. He didn't deny upfront the potential of top deck leakage (or that it is being experienced in machines in the field). He mentioned a tooled cover built with an inspection window that allows you to see a leak and not be exposed to high pressure streaming. Edited November 28, 2017 by Mack Technician Quote Link to comment Share on other sites More sharing options...
Mackpro Posted November 28, 2017 Share Posted November 28, 2017 I went to the Atlanta school on the common rail engine last year and not much was known on it at the time. I think we were the first or second class ever. Yep hollow cam and no more balancer on the end of it. A few tech bulletins in CBR on checking for leaks under the valve cover. I haven't read them but I wonder if the $10,000 smoke machine that Mack sent all the dealerships is used. The only thing I dont like about the common rail engine is that the AHI module is made into the fuel filter stand. Better change your air drier filters! I been to the Chicago school a few time back 10 years ago. We get the choice of going to Atlanta or Chicago for school but since we only go in the winter , we head south. Heard stories of twisted cams on the new engine but it was on test trucks in Europe and was fixed before they got over here. 1 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 28, 2017 Author Share Posted November 28, 2017 20 hours ago, 57 bcr said: Keep your pockets sewn up while your here Mack Techniician,Illinois needs the money! Keep clicking your heels together and repeat "there's no place like home"! Lol! Al Too late, the toll way shook me down for my wallet before I even got here. 1 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 29, 2017 Author Share Posted November 29, 2017 20 hours ago, Jamaican Bulldog said: To paraphrase " the demise of the internal combustion engine is greatly exaggerated". Same thing happening in the car end and right truck end of the auto industry where I am. Constant advances in the good old internal composition tech will keep them viable foe many years to come. However there are so many interest groups often funded by tax payer money trying to undermine it to make alternatives seem more viable future powertrain Day two stuff......I pressed the subject a bit and asked the instructor to back up. Volvo/Mack has hit 95% emissions efficiency. Engineering believes it will be unable to satisfy another tier. They are to the point in engine building where this line has become a race engine that is virtually unable to be improved or manipulated for improvement. Engine is going to be a "Standard" condition engine. You will not be machining this engine. No bore cuts, no plane cuts, no align boring. They hit terminal on the emissions and hit terminal on certain lathe serviceability too. Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 29, 2017 Author Share Posted November 29, 2017 (edited) - Volvo will continue to ship engine components to USA for machining into service at Hagerstown. Cannot do casting of engine parts stateside due to EPA. - They will keep the 7th injector instead of injecting on exhaust stroke like Cummins is going to. - Buy all the warranty you can get. A major failure of turbo can down your emission/exhaust system (any engine OEM). Think $25K max damage. - Turbo compounder is back feeding 50 horse into engine through two additional gears in the rear timing gear train. - New head is going to be reverse compatible to old engine despite harness differences. - Cam is hollow, but can take it. Less unit pump injector action (due to high rail) has taken the stress out of cam action which means less stress, vibration and no harmonic balancer. -New cam design means that, for the first time, they have an exact hardness match on lobe and follower. No sacrificial metal on one or the other as in past. - really nice video mechanic website for DIY mechanics..... www.volvotrainingsupport.com - Frank Russian has a system for setting dowels/ plate/ timing lash accurately in 4-5 minutes for someone doing it for the first time. Edited November 29, 2017 by Mack Technician 1 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 29, 2017 Author Share Posted November 29, 2017 If this is accurate......tisk..tisk...tisk Volvo. Volvo/ Mack will be shutting out (not shutting down) Emedia. Everyone will have access to the old information. They will put the info cut-line at post 2016. They will only be including information they have to legally present in open books, namely certain emissions system information. I'm going to save my rant, I did it on last weeks post, all ranted out on intellectual property warfare. Ok, one more rant..... There are two business models running parallel in our country. The European business model and OURS. The European model is about to come to complete fruition right before your eyes. Get ready to be injected with ignorance unless you are a dealership. No angst against BMT dealership mechanics, you guys are the new Robin Hoods of Mack Trucks. Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 29, 2017 Author Share Posted November 29, 2017 (edited) 23 hours ago, 41chevy said: Diesel will still be here in 50 years. there are applications electric just will not be practical in. The method for doing the cams is a aero space process. The normal cams are forged and than machined / centerless ground. Volvo /MACK set up is a tube most likely molly based steel, the lobs are formed as a stick , machines and sliced off. The "swege" process is actually called Cryo-Fitting . The cam lobes are chilled in liquid nitrogen and placed in position on the tube.They will not move when they reach air temp. The assembly is than heat treated and final finished on lobes and bearing journals. Been used in Top Fuel engines for 3 to 4 years and they survive 9000 h.p. 97% nitro methane. The cams are lighter, have more torsional "give" and less rotating mass = less wear and spool up faster. Paul As for keeping the driver alert. . . .electro shock seats Per group discussions.... Predictions are no practicality for long haul. Battery power behind heavy loading is mixed. Long grades create unmanageable heat. Locomotives are pulling diesel over electric drivetrain, but also never seeing more than a %5 grade...so heat generation in drive system never hits terminal overheat. Alternative power is trending toward sprint vans. Looking at practicality of smaller transports that may haul less on shorter runs, but can be fit with a lower skill set, uber-style, driver that does not have the paid qualifications of CDL driver. Tesla has a 800 mile charge (Though KS is only seeing 500 in his articles...not sure what truck these guys are talking about going 800?). Edited November 29, 2017 by Mack Technician Quote Link to comment Share on other sites More sharing options...
41chevy Posted November 29, 2017 Share Posted November 29, 2017 (edited) 1 hour ago, Mack Technician said: Per group discussions.... Predictions are no practicality for long haul. Battery power behind heavy loading is mixed. Long grades create unmanageable heat. Locomotives are pulling diesel over electric drivetrain, but also never seeing more than a %5 grade...so heat generation in drive system never hits terminal overheat. Alternative power is trending toward sprint vans. Looking at practicality of smaller transports that may haul less on shorter runs, but can be fit with a lower skill set, uber-style, driver that does not have the paid qualifications of CDL driver. Tesla has a 800 mile charge (Though KS is only seeing 500 in his articles...not sure what truck these guys are talking about going 800?). Musk states a 30 minute charge =400 miles. We'll see as he is going to run some from his factory in Cali to his other factory in Nevada, 220 each way with Donner Pass thrown in. Edited November 29, 2017 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
Hayseed Posted November 29, 2017 Share Posted November 29, 2017 On 11/28/2017 at 12:09 PM, Dirtymilkman said: I don't understand the camshaft deal? I'm surprised they haven't gone Camless...& Actuate the valves By Solenoid.. But as Swishy is wont to say.. Waddaeyekno... Quote "Be who you are and say what you feel...Because those that matter...don't mind...And those that mind....don't matter." - Link to comment Share on other sites More sharing options...
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