Vision 618 Posted August 3, 2019 Share Posted August 3, 2019 I have 1.7 million miles on my E7 with original eup's. Number 6 and 5 are starting to leak and I'm getting an intermittent number 2 flash code. I'm gonna go ahead and replace all 6 and am looking for the proper procedure. Can anyone help with that? Quote Link to comment Share on other sites More sharing options...
0 JoeH Posted August 3, 2019 Share Posted August 3, 2019 Go to your local Mack dealer and buy book # 5-106. It's the E-tech Engine Service Manual. While you are there buy book # 8-211, it's the v-mac III service manual. Contains every code and the diagnostics to find the fault. Those motors contain a blink code system to read active fault codes. Between those books you should have everything you need to tackle just about any issue you have with the engine. Great life out of your existing eups! Pictures please! EUPs tend to fail from either broken springs or an alignment dowel breaks, allowing the EUP roller to rotate, eating the lobe off the camshaft. Replacing the alignment dowels is a good idea. I've never had to touch an EUP though, so I'm just reciting what I've read here. 1 Quote Link to comment Share on other sites More sharing options...
0 Vision 618 Posted August 4, 2019 Author Share Posted August 4, 2019 Ok. Thank you. I found online where you can download the manuals for free. I just needed the 5-106. Mutch appreciated! Quote Link to comment Share on other sites More sharing options...
0 JoeH Posted August 4, 2019 Share Posted August 4, 2019 4 hours ago, Vision 618 said: Ok. Thank you. I found online where you can download the manuals for free. I just needed the 5-106. Mutch appreciated! The guys here are a huge resource, but for doing detail work you have to have the book. You need to know torque settings and step by step procedures. 1 Quote Link to comment Share on other sites More sharing options...
0 Mackpro Posted August 4, 2019 Share Posted August 4, 2019 Always make sure your heat shields are in place to protect the EUPs . On some chassis’s the exhaust pipe is really close to #5 and #6 EUP. Even with the heat shields in place the those back two EUP’s take beating from the heat off the pipe. We see the back two fail more than the front 4 . Remember that there are 3 different part numbers for EUP’s . All three look exactly the same . Also the middle o-ring is no longer used and on some the later castings the O-ring groove was totally elimated . 1 1 Quote Link to comment Share on other sites More sharing options...
0 Vision 618 Posted August 5, 2019 Author Share Posted August 5, 2019 Hopefully the eup's I ordered from thedieselstore.com are the right ones. As long as they send me what I ordered they should be. My local Mack dealer showed me a Mack website where you can download the manuals for free. Pretty handy! Thanks for all your help!! 1 Quote Link to comment Share on other sites More sharing options...
0 Vision 618 Posted August 17, 2019 Author Share Posted August 17, 2019 So, I changed 2 and 6. No problems! Yesterday, an 8-6 code started intermittently popping up. Before it was an 8-2, that's why I changed number 2 to see if that code would go away. Figured if it didn't, I had a wiring issue. I never got a 8-6 but I changed it because there was fuel leaking around that one. No change in engine performance when the code pops up. 20 year old wiring harness perhaps? Quote Link to comment Share on other sites More sharing options...
0 JoeH Posted August 17, 2019 Share Posted August 17, 2019 Perhaps; clean your wire connectors and put dielectric grease on the connector? 1 Quote Link to comment Share on other sites More sharing options...
0 Mack Technician Posted August 22, 2019 Share Posted August 22, 2019 (edited) On 8/17/2019 at 12:43 PM, Vision 618 said: So, I changed 2 and 6. No problems! Yesterday, an 8-6 code started intermittently popping up. Before it was an 8-2, that's why I changed number 2 to see if that code would go away. Figured if it didn't, I had a wiring issue. I never got a 8-6 but I changed it because there was fuel leaking around that one. No change in engine performance when the code pops up. 20 year old wiring harness perhaps? So the 8-6 continues to pop even after changing the EUP? How much are you paying for your EUP's? Edited August 22, 2019 by Mack Technician Quote Link to comment Share on other sites More sharing options...
0 wilbur Posted August 22, 2019 Share Posted August 22, 2019 From the diesel store they are 265bucks supposed to be Bosch rebuilt from Bosch. https://thedieselstore.com/electronic-unit-pump-for-1997-2001-mack-e7-series.html Quote Link to comment Share on other sites More sharing options...
0 Vision 618 Posted September 12, 2019 Author Share Posted September 12, 2019 On 8/22/2019 at 9:32 AM, Mack Technician said: So the 8-6 continues to pop even after changing the EUP? How much are you paying for your EUP's? Yep. Thedieselstore.com for $265. I still get the 8-6 code from time to time with no difference in how the engine is running. My mack dealer told me it wasn't necessary to put the calibration codes into the computer unless I have an issue. I'm going to wait until I do the other 4 pumps and then have them put the codes in anyways. I am getting an ignition knock(not all of the time) at an idle. Quote Link to comment Share on other sites More sharing options...
0 Vision 618 Posted September 12, 2019 Author Share Posted September 12, 2019 On 8/22/2019 at 6:32 PM, wilbur said: From the diesel store they are 265bucks supposed to be Bosch rebuilt from Bosch. https://thedieselstore.com/electronic-unit-pump-for-1997-2001-mack-e7-series.html Yep. That's where I got them from. Quote Link to comment Share on other sites More sharing options...
0 Mack Technician Posted September 12, 2019 Share Posted September 12, 2019 38 minutes ago, Vision 618 said: I am getting an ignition knock(not all of the time) at an idle. That's Mack E-Tech's, distinctive, patented, "Oh No, Cams Gonna Go!" Idle Hammer Knock, they have it intellectually patented like Harley Davidson owns their "POP-POP-PAUSE" idle lope. 1 Quote Link to comment Share on other sites More sharing options...
0 Vision 618 Posted September 12, 2019 Author Share Posted September 12, 2019 1 hour ago, Mack Technician said: That's Mack E-Tech's, distinctive, patented, "Oh No, Cams Gonna Go!" Idle Hammer Knock, they have it intellectually patented like Harley Davidson owns their "POP-POP-PAUSE" idle lope. Lol... yep! Quote Link to comment Share on other sites More sharing options...
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Vision 618
I have 1.7 million miles on my E7 with original eup's. Number 6 and 5 are starting to leak and I'm getting an intermittent number 2 flash code. I'm gonna go ahead and replace all 6 and am looking for the proper procedure. Can anyone help with that?
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