Valve adjustment procedure questionDiscussion in ' Mack Forum ' started by brianApr 18, Log in or Sign up. Find Trucking Jobs. Valve adjustment procedure question Discussion in ' Mack Forum ' started by brianApr 18, Apr 18, 1. Does anyone have the procedure and specifications for setting valve lash on a E in a CX Vision? I have done this on Cats and Cummins but never a Mack. Yes, let employers and TruckersReport text me with new opportunities, job alerts and other career information to the number I provided. There is no charge for this service, but standard message and data rates may apply. Apr 18, 2. I do not have my book here tonight but intakes 16, exhaust I believe the E7's have timing marks on the flywheel but it takes two and I was often alone and use companion cylinder method. Write done the firing order. Then under that write down 6 2 4 1 5 3. Rock the valves on 1 exhaust closing and intake opening and adjust the valves on 6, draw a line through 6. Then rock 5 and adjust 2, etc. You can start anywhere as long as you keep up with it. If no one else answers and you want by the book let me know but it will be tomorrow. BoxCarKiddApr 18, Apr 18, 3. Apr 19, 4. No problem only 7 and a half pages. The first 4 tell you there is a pointer in the center of the hole, at the bottom of the flywheel housing, after you remove the cover. Tool JA is used in the flywheel housing hole at the right rear of the oil pan to rotate the engine. If you cannot read them there are instructions on here to remark them if you have a typical flywheel. If you have a non-typical flywheel it should be replaced. Then use the marks and adjust the valves the same as I explained in the companion cylinder method. BoxCarKiddApr 19, Apr 25, 5. Pedigreed BulldogApr 25, Apr 25, 6. Show Ignored Content. Draft saved Draft deleted. Your username or email address: Do you already have an account? No, create an account now. Yes, my password is: Forgot your password?
Valve adjustment procedure question
Asked by OldRedMack. Any ideas on whats going on? The truck has plenty of power, just all after rpm. I had an s built for it, then read that posting a couple days ago and swapped the manifold. And it helped a good bit, but you can still tell when it opens up. I thought I read somewhere that the torque curve was programmable on that engine, but when I call the local Mack dealer here in Atlanta they sound like idiots and acted like they have never even heard of the updates for that engine. So I have no idea if it has had the 12b update or not. If your still not happy Don't bother to call mack in Atlanta, they no nothing other than Mack starts with the letter M, I don't even by parts from them, we have them shipped in from KY. Boost sensor not picking low pressure reading?? Good luck. That engine should pull strong way below AMI data sheet. No I have not done injectors yet. I'll pull it up in the morning and see what the software levels are at. The ole dirty was as small as you would ever want to go in a AI engine. They actually had the same torque output as a The uses a turbo but injectors. The A for Allisons uses a injectors and turbo. Ok, y'all are awesome. I've learned more from this place than I have the last 3years of talking to every mechanic I can find to try and figure this truck out.
We have a Mack MR that's running rough we have replaced injectors and the fuel supply pump. The truck seemed to run better for a bit but has now gone back to running rough again. I also checked my muffler to see if it had fallen apart inside causing restriction as well as the air intake cover is not causing restriction. Any help or ideas would be very helpful! Any fault codes? Seems it would have to be fuel related because its a diesel and has no spark. No real clues. I agree it seems to be. A fuel issue. The truck doesn't seem to pour the smoke out it seems to run very clean little to no smoke from the exhaust. The electronic malfunction light only comes on when I have the PTO engaged doesn't flash just stays on steady. The light doesnt come on while driving. Is the engine starting a little rough. Turns over longer than normal. Let me know. You probably know this but, if the malfunction light comes on shut off the cruse button and hold down on the cruse set botton the EML will blink and give you a code on what is malfunctioning. I'm sure your fuel filter has been changed once mine had water in it and would freeze after stopping to pump. Maybe check for a crack in the fuel supply line? Lift pump is referred to as a fuel supply pump we replaced it. We got the codes when the EML flashed they were for injector issue cylinder 1 2 and 6 so The injectors have been replaced. What about the inside of the fuel supply line collapsing inside?
I have a CH I bought the truck a few years back. Bought it with k miles, and now it has about k. Runs very well. Power is good. Pulls 32lbs of boost. Engine is labeled HP, but previous owner says he had it turned into a HP?? Is that possible? I drove a stock yearand it felt like a slug compared to mine. That truck empty felt like mine loaded. Anyhow, I noticed my jake doesnt seem to be strong at all. I have not had the engine touched since i bought it. Someone told me i should have the valves adjusted. Is this the cause of a weak jake?? The Jake might need a tune up kit. I'm not sure what is involved or how much it is but after a while they wear. It wouldn't hurt to have the valves done. Did mine at k and made a big difference in power and mileage. Should help the Jake too. In any case, if you do decide to run the overhead yourself, be sure to adjust the brake loosely at. Otherwise you could end up with a broken guide pin and possibly replacing a head. Is this something I should just let the Mack dealer do?? Have them adjust valves and rebuild jake? About how many hours labor would it cost? Im only a few miles from the dealer but dealer prices scare me sometimes, but so does the idea of screwig up my motor trying to save a few bucks! I had mine done a year ago They replaced the solenoids, adjusted the valves and had to replace a worn out set screw thingermajigger The biggest deal was finding the time, as the truck has to sit almost over-night to allow the motor to cool to 'room' temperature. I think they call it stealth because you don't even know it's on. You can post now and register later. If you have an account, sign in now to post with your account. Paste as plain text instead. Only 75 emoji are allowed. Display as a link instead. Clear editor. Upload or insert images from URL. Engine and Transmission Search In. Recommended Posts. Posted October 14, By tuffenufOctober 27, in Engine and Transmission. Just got 2 know, why this Mack does not have the power it should? No boost gauge on truck seems I drive around with fuel pedal mashed towards floor, and doesn't seem able to get up and go? Hate the need to constantly stay near redline. Pyro never aboveno boost leaks, clean filters, maybe grossed out 73K is too much for the pup. Mack has real problem with emmisions restrictions choked engine. I have a turbo and injector combo that wakes engine up. Thanks for the infoI did talk to service manager and got to get there for appointment. Boost gauge will be installed to monitor things. You can post now and register later. If you have an account, sign in now to post with your account. Paste as plain text instead. Only 75 emoji are allowed. Display as a link instead. Clear editor. Upload or insert images from URL. Engine and Transmission Search In. Recommended Posts. Posted October 27, Share this post Link to post Share on other sites. Posted October 29,