dickbuick Posted November 18, 2016 Share Posted November 18, 2016 I have 6 2012 GU's that are not covered by this campaign. First one came apart last week and I wanted to pin the other 5. My dealer scraped there fixture to do the job and I cant find where to buy one. #s from the campaign are no longer available. I know they are out there but where? HELP Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/ Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 Have you got MP7's or 8"s? Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352324 Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 Here are both the service bulletins. I remember doing alot of them. Ill check and see if I can locate the kit if it hasnt been thrown away. Im doing a bull gear failure in a 2014 MP8 right now. I think Id rather be hit in the head by Mike Tyson than do this. MP7 idler gear pinning.pdf MP8 idler gear pinning.pdf Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352325 Share on other sites More sharing options...
fjh Posted November 18, 2016 Share Posted November 18, 2016 (edited) Yup we got a newer Mp 7 and an 14 mp8 in the shop same deal we did an mp10 last year Also had an Mp8 fail after the pin Bandaid job the nut broke! makes one wonder how many failures is acceptable to these people before they repair stuff properly! Kinda like the injector Cup Fiasco !Except WAY MORE expensive! Edited November 18, 2016 by fjh 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352328 Share on other sites More sharing options...
1965 Posted November 18, 2016 Share Posted November 18, 2016 Makes me sick & scared to run my truck! mack should fix these problems! Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352330 Share on other sites More sharing options...
fjh Posted November 18, 2016 Share Posted November 18, 2016 simply a crap shoot ! It dosent happen that often however How often is to often to them? Its still happening ! so are they going to fix it? If it fails after warranty its not their problem! Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352331 Share on other sites More sharing options...
1965 Posted November 18, 2016 Share Posted November 18, 2016 Yea; & that's just plane sorry! Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352332 Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 This was supposed to be fixed by 2012. The failure was due to high oil temp to the gear train, This was fixed by software downloads that opened the oil valve at a lower oil temp so the timing gear bearings didnt get to hot ( All part of the "Clean Idle" crap) The oil filter stand is a maze of thermostats and oil control valves. They improved the bull gear as well. The failures really dropped off after 2012 but still happen , we only do 1 or 2 a year here. Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352333 Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 There is a 5 year/ 500000 mile warranty on Bull gear failures as well Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352334 Share on other sites More sharing options...
1965 Posted November 18, 2016 Share Posted November 18, 2016 Key word "supposed"!!!! Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352335 Share on other sites More sharing options...
fjh Posted November 18, 2016 Share Posted November 18, 2016 (edited) Guess its down to acceptable now? In there eyes! So the question now Is the engine still compliant or are we doing the VW thing! ? Kidding the EPA! Edited November 18, 2016 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352336 Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 We actually have done more bull gear failures on Detroit 60 series than Macks. However at least the gears on the Detroit are in the front and not the back. One of the downfalls of the over head cam engine . I miss the E-Tech's. LOL Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352337 Share on other sites More sharing options...
fjh Posted November 18, 2016 Share Posted November 18, 2016 (edited) 7 minutes ago, Mackpro said: We actually have done more bull gear failures on Detroit 60 series than Macks. However at least the gears on the Detroit are in the front and not the back. One of the downfalls of the over head cam engine . I miss the E-Tech's. LOL ME TO ! NOT LOL! For the most part it was fixable! MP not so much! One thing about it it will keep the younger folks busy for years to come ! Bandaids and patches! Edited November 18, 2016 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352338 Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 We live in a "disposable society" today. 30-40 years from now, no one will be pulling CHU's out of the weeds to restore like they do B Models now. We have a young boy here that does all the Bull Gears, sadly he was in the middle of a major overhaul so I took the job. Im to old for this sh*t. LOL Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352341 Share on other sites More sharing options...
fjh Posted November 18, 2016 Share Posted November 18, 2016 I'm proud of you buddy fly in the face adversity ! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352342 Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 27 minutes ago, fjh said: I'm proud of you buddy fly in the face adversity ! Our clutch jack is broke so Ill be flying with a broken back! LOL Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352343 Share on other sites More sharing options...
1965 Posted November 18, 2016 Share Posted November 18, 2016 2 hours ago, Mackpro said: We live in a "disposable society" today. 30-40 years from now, no one will be pulling CHU's out of the weeds to restore like they do B Models now. We have a young boy here that does all the Bull Gears, sadly he was in the middle of a major overhaul so I took the job. Im to old for this sh*t. LOL We might be living in a "disposable society" but the bullgear & injecters are not suppose to be the disposal parts; fortunately I live in an area that I could get by doing a delete on the "disposable " part Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352347 Share on other sites More sharing options...
dickbuick Posted November 18, 2016 Author Share Posted November 18, 2016 Thanks Mackpro but the part# on that service program is no longer available thru Mack even the phone# is disconnected.I thought maybe there was a kent more #. Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352352 Share on other sites More sharing options...
dickbuick Posted November 18, 2016 Author Share Posted November 18, 2016 I some times drive a 1977 DM steel nose not as nice as the GU's but there no parked regen need light. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352353 Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 Bull gear didnt go down on this one . Idler gear that run the fuel supply pump/power steering pump ( called tandem pump by Mack) went bad . Still gotta strip it all down to get it out. Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352359 Share on other sites More sharing options...
Mackpro Posted November 18, 2016 Share Posted November 18, 2016 Mountain O' Gears. Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352360 Share on other sites More sharing options...
br549 Posted November 18, 2016 Share Posted November 18, 2016 Bought a new REMACK MP 8 engine in early 2015 4 months and 30,000 miles later idler gear went out, It's sad to say but it' hard to make any money with MP-8 engine, E7 and E Tech Engine were reliable and dependable engines. I had been holding off about buying some New Macks when the plant shut down late last year, been hauling there for 54 years, with the way new trucks are it was a easy decision to sell off all of out trucks and trailers and exit the trucking business. No Trucks, No Drivers, No Problems! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352369 Share on other sites More sharing options...
dickbuick Posted November 19, 2016 Author Share Posted November 19, 2016 Ya no more trucks. I am 51 and my father worked for local Mack dealer for 50 years. My grandfather tells stories of going to California in a gas job Brockway. The only other thing for me is you want fries with that? Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-352398 Share on other sites More sharing options...
dickbuick Posted December 11, 2016 Author Share Posted December 11, 2016 After a month of searching I am getting remaining gears pinned on my 2012 MP8'S. I was told Mack don't like to do them after 1000 hrs dose anyone know why? Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-354689 Share on other sites More sharing options...
fjh Posted December 11, 2016 Share Posted December 11, 2016 Cause it costs them money! I guess! Quote Link to comment https://www.bigmacktrucks.com/topic/47723-2012-mp8-double-idler-gear-pinning/#findComment-354715 Share on other sites More sharing options...
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