Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 13 minutes ago, Joey Mack said: Yes sir.. another concern I had was, if you were to free it up after 'Giving it Hell'... then actually get it to fire up,, what will cut loose?? and cause more work if it's not 'Fatal'? I truly understand being anxious... Ive been there many times, whether it was a dirt bike, snowmobile, lawn equipt... and so-on.. I have blown some engines because i was in a hurry,, .. anyway, you got this... jojo Thanks for reminding me about having patience. I know better for sure. I just really didn’t want to get into the motor but it is what it is and I’ll do it. Worried that they don’t make parts for it anymore, but if I break something because I’m being hasty I’m gonna screw myself. That said, is the 673 considered an “E6”? Does this gasket set look like it’s for the 673? Looks as if the head gaskets match up but just wondering about the rest of the manifolds etc Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514729 Share on other sites More sharing options...
Joey Mack Posted November 11, 2022 Share Posted November 11, 2022 Its an E-6, or one of them anyway... good call going to Agkits for parts... PAI, has a lot of parts.. As you have seen, there are a few other guys here that are very smart. They can guide you very well, and I can add a little bit when it comes to buying parts, because of the one that I am building.. jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514731 Share on other sites More sharing options...
Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 16 minutes ago, Joey Mack said: Its an E-6, or one of them anyway... good call going to Agkits for parts... PAI, has a lot of parts.. As you have seen, there are a few other guys here that are very smart. They can guide you very well, and I can add a little bit when it comes to buying parts, because of the one that I am building.. jojo Oh good. I don’t mind tearing it down as long as I can get it back together with the right gaskets and what not. I’ve made gaskets out of thin cardboard and gasket material but a gasket kit sure is easier haha. I wish I had a service manual. Those are hard to find for sure. I think the Mack museum used to send them on a pdf but last I checked the website was kind of on hold fe Covid or whatever. I’ll go check again Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514732 Share on other sites More sharing options...
BOBWhite Posted November 11, 2022 Share Posted November 11, 2022 (edited) Isn't it awful finding online books for these? If you can't find the book then the standard torque values are your next best thing. This chart should help: Edited November 11, 2022 by BOBWhite 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514736 Share on other sites More sharing options...
Joey Mack Posted November 11, 2022 Share Posted November 11, 2022 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514737 Share on other sites More sharing options...
Joey Mack Posted November 11, 2022 Share Posted November 11, 2022 If you can get your Mack parts dept. to print the KSA+A book.. there is a bunch of goodies in it. Part numbers and such. The other book is one that I got from E-Bay. Its a copy of a copy of a copy.. But the words are ledgible. Its an E-6 2 valve engine book.. jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514738 Share on other sites More sharing options...
Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 (edited) I just found a 673/711 manual from 1966 on eBay! I’ve been looking and haven’t found anything until now. Snatched it up!! $50 for a Mack service manual is a good deal in my book Edited November 11, 2022 by Craig N Spellcheck got me 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514741 Share on other sites More sharing options...
Joey Mack Posted November 11, 2022 Share Posted November 11, 2022 Hell Yeah !!!!! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514742 Share on other sites More sharing options...
fjh Posted November 11, 2022 Share Posted November 11, 2022 1 hour ago, Joey Mack said: If you can get your Mack parts dept. to print the KSA+A book.. there is a bunch of goodies in it. Part numbers and such. The other book is one that I got from E-Bay. Its a copy of a copy of a copy.. But the words are ledgible. Its an E-6 2 valve engine book.. jojo Don't forget the head bolts are Proper STUDS and nuts Coarse on the bottom fine on the top! pulling the heads is not always a cake walk either You may find your self struggling here too don't be surprised !Joe , Glenn Myself and others will likely be able to walk you thru the scenarios! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514744 Share on other sites More sharing options...
Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 7 hours ago, fjh said: Don't forget the head bolts are Proper STUDS and nuts Coarse on the bottom fine on the top! pulling the heads is not always a cake walk either You may find your self struggling here too don't be surprised !Joe , Glenn Myself and others will likely be able to walk you thru the scenarios! It’s like any other project, whether it’s a house project, work project, car/truck/bike/boat, it’s not usually going to go as planned haha. Usually takes 3x the amount of time that you plan it to take, or more. I guess I’ll know if this motor will ever run again once I tear the heads off and see what I’ve got to work with. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514750 Share on other sites More sharing options...
Popular Post Freightrain Posted November 11, 2022 Popular Post Share Posted November 11, 2022 When I biught my 237 it had two cylinders full of mud daubers nests. I pulled the heads, cleaned the mess out, oil the cylinders and found a gasket set on Ebay and bolted it back together. The intake had been removed for some time and thus the mess inside. It was a good day when I got it fired back up. 2 2 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514764 Share on other sites More sharing options...
Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 1 hour ago, Freightrain said: When I biught my 237 it had two cylinders full of mud daubers nests. I pulled the heads, cleaned the mess out, oil the cylinders and found a gasket set on Ebay and bolted it back together. The intake had been removed for some time and thus the mess inside. It was a good day when I got it fired back up. Oh, that must’ve been a great feeling hearing that thing sing after you got it all back together!! 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514771 Share on other sites More sharing options...
Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 Would you guys recommend using this injector puller to try and break these stuck ones free? I could use this and pull with the heel bars at the same time. I just worry about the threads that the puller threads into. About 3/4” of threads though. What do you guys think? How much should I “crank” the puller down? I’m not going to put an impact on or anything Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514776 Share on other sites More sharing options...
fjh Posted November 11, 2022 Share Posted November 11, 2022 2 hours ago, Craig N said: Would you guys recommend using this injector puller to try and break these stuck ones free? I could use this and pull with the heel bars at the same time. I just worry about the threads that the puller threads into. About 3/4” of threads though. What do you guys think? How much should I “crank” the puller down? I’m not going to put an impact on or anything Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514780 Share on other sites More sharing options...
fjh Posted November 11, 2022 Share Posted November 11, 2022 1 minute ago, fjh said: Be careful That can strip the boss at the top combine that with what you doing! Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514781 Share on other sites More sharing options...
Freightrain Posted November 11, 2022 Share Posted November 11, 2022 Wonder if you just snug that puller lightly them smack it with a hammer on top? Maybe that would jar the injector loose? "I assume no responsibility if it screws something up". Lol. 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514782 Share on other sites More sharing options...
Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 Well, there was a mouse house in the front valve cover all in the rockers. Haven’t taken rear off yet. Bunch of dead mice too. Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514794 Share on other sites More sharing options...
Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514795 Share on other sites More sharing options...
mrsmackpaul Posted November 11, 2022 Share Posted November 11, 2022 There's some good reasons to not force the engine to hard mentioned here My thoughts are fairly similar, if the truck is home and you are capable of mechanical work to me it's a no brainer, pull the heads and have a look Because without doing that you have no idea what's stuck, everyone here is assuming pistons, it really could be anything and the chance of causing a major issue is pretty high and could be easily prevented by pulling the heads and having a good look Not only that it gives you the chance to clean 50 years or more of crap off everything and not have it pumped thru the motor Anyway thats just thoughts Paul Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514797 Share on other sites More sharing options...
Joey Mack Posted November 11, 2022 Share Posted November 11, 2022 Craig, Buddy... I almost added to my post about tearing the E-6 down.... I had 2 sweet mouse house's under the valve covers, as well.. this engine was in the woods upstate NY.. too funny... Your rocker shafts look at lot better then mine.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514801 Share on other sites More sharing options...
Popular Post Craig N Posted November 11, 2022 Author Popular Post Share Posted November 11, 2022 (edited) Well if this ain’t a sight for sore eyes!!! A little tension with the puller and prying them with the heel bars from the valve cover side did it. There’s mouse evidence in the air intake as well. I think it’d be foolish on my part to not take the heads off at this point. Edited November 11, 2022 by Craig N “Louse” 1 2 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514806 Share on other sites More sharing options...
mrsmackpaul Posted November 11, 2022 Share Posted November 11, 2022 50 minutes ago, Craig N said: I think it’d be foolish on my part to not take the heads off at this point. I would agree, you can see there's issues, dont want to make it worse Gaskets and the like are cheap Paul 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514812 Share on other sites More sharing options...
Craig N Posted November 11, 2022 Author Share Posted November 11, 2022 If I have time tomorrow I’ll start tearing the intake, exhaust and coolant manifolds off. Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514813 Share on other sites More sharing options...
Popular Post Craig N Posted November 11, 2022 Author Popular Post Share Posted November 11, 2022 6 minutes ago, mrsmackpaul said: I would agree, you can see there's issues, dont want to make it worse Gaskets and the like are cheap Paul Yep. Rather be safe than sorry. I must’ve vacuumed 5-6 little mice out of the rocker area. There’s mouse poop in the air intake. There’s bound to be dried mice hanging out in the cylinders. Acorns. Who knows. 1 2 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514814 Share on other sites More sharing options...
BOBWhite Posted November 12, 2022 Share Posted November 12, 2022 On 11/10/2022 at 10:03 PM, fjh said: Don't forget the head bolts are Proper STUDS and nuts Coarse on the bottom fine on the top! pulling the heads is not always a cake walk either You may find your self struggling here too don't be surprised !Joe , Glenn Myself and others will likely be able to walk you thru the scenarios! What could be so hard about taking the heads off an old engine like this? Opposite the re-torquing pattern and then lift them off. I don't even think you would need a lift like a cat or cummins engine since it has two heads. And do you need to replace the head bolts and studs on something like this? I know now they have special torque to yield one time only bolts and studs but on old stuff I almost always reuse the head bolts. Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/3/#findComment-514823 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.