Moparmike Posted January 27, 2017 Share Posted January 27, 2017 Pick my dump truck up yesterday drove about 50 miles bolt broke out in last injector it popped out..you guys think it's possible to drill out and time sert it in the truck with no problems. Maybe remove the turbo and exhaust down piping.. I see its a lot of pressure on those injectors I tried to push it back in no luck about a 1/4 wouldn't go ... Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/ Share on other sites More sharing options...
fjh Posted January 27, 2017 Share Posted January 27, 2017 this is common It will likly just screw out replace the orings and the bolts good to go 1 Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-359978 Share on other sites More sharing options...
Moparmike Posted January 27, 2017 Author Share Posted January 27, 2017 Wow ok so normal thing ..are they grade 8 bolts or should I just replace with grade 8.. And thanks for the heads up on this Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-359983 Share on other sites More sharing options...
Moparmike Posted January 27, 2017 Author Share Posted January 27, 2017 Few pictures Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-359985 Share on other sites More sharing options...
fjh Posted January 28, 2017 Share Posted January 28, 2017 Not normal! just happens some times! Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360062 Share on other sites More sharing options...
Moparmike Posted January 28, 2017 Author Share Posted January 28, 2017 Thanks guys any other stuff to look out for on this ..I'm new to mack have had a few others still have a fld freightliner Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360065 Share on other sites More sharing options...
fjh Posted January 29, 2017 Share Posted January 29, 2017 11 hours ago, Moparmike said: Thanks guys any other stuff to look out for on this ..I'm new to mack have had a few others still have a fld freightliner Nope THE RD is a tough unit Cams sometimes fail Rocker bolts sometimes break on the newer engines with power leash! I recommend replacing ALL the unit pump bolts if you got the bucks Get the proper bolts from the dealer! 2 Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360143 Share on other sites More sharing options...
Moparmike Posted January 31, 2017 Author Share Posted January 31, 2017 Thanks guys any other stuff to look out for on this ..I'm new to mack have had a few others still have a fld freightliner OK guys I need some help here ..however worked on this injector before made a mess ..how to fix it now..I'm thinking time sert..I'm open to all suggestions..I have 1 more thought but it's extreme lol.. Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360396 Share on other sites More sharing options...
hatcity Posted January 31, 2017 Share Posted January 31, 2017 appears you got something to bite on. Try a good pair of vise grips? Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360400 Share on other sites More sharing options...
terry Posted January 31, 2017 Share Posted January 31, 2017 Weld a nut on it and back out. terry 1 Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360401 Share on other sites More sharing options...
Moparmike Posted February 1, 2017 Author Share Posted February 1, 2017 49 minutes ago, terry said: Weld a nut on it and back out. terry Sorry guys the picture is a little deceiving it's broken off about 1inch in the hole treads are gone looks like someone tried to get it out before and this is what left of there mess ..my new mess .. Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360404 Share on other sites More sharing options...
theakerstwo Posted February 1, 2017 Share Posted February 1, 2017 If you have never drilled broken bolts out than dont start on this.This can be done but dont use one of the cheap easy outs.For the price of a block it would be good for you to get some one who has done this. 1 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360406 Share on other sites More sharing options...
Moparmike Posted February 1, 2017 Author Share Posted February 1, 2017 7 minutes ago, theakerstwo said: If you have never drilled broken bolts out than dont start on this.This can be done but dont use one of the cheap easy outs.For the price of a block it would be good for you to get some one who has done this. Ohhhh yes your right it's in a shop ..we've been discussing our options cause I need it done right..we've used time sert on cylinder head on race cars so I was thinking it should be able to keep this in place... Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360408 Share on other sites More sharing options...
Underdog Posted February 1, 2017 Share Posted February 1, 2017 Weld a nut on it and back out. terryBest option. The heat from welding will help break loose the stud and then you have a nut to work with a wrench. Done it many times with exhaust manifold bolts. Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360423 Share on other sites More sharing options...
eddeere Posted February 1, 2017 Share Posted February 1, 2017 I had a stud that holds the axle flange on a rear drum broken off about 1 inch down in. I took it to a local weld shop and the welder started with a wire welder and built the stud up to the top . Next he welded a nut on top. After it cooled he said everything came out using a pair of pliers . I do not have the skill to weld like this but thought if I ever wanted to try it maybe using a copper sleeve to protect the threads might work. Like Underdog said it works. I think the welding shrinks the metal. Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360440 Share on other sites More sharing options...
Underdog Posted February 1, 2017 Share Posted February 1, 2017 Mostly you can do it because your welding to a steel stud and it will not stick to the cast around it. And the different rates of expansion allow it to thread out rather easily after Heating. If your welding skills are not that good, best to take it to a professional welder. Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360446 Share on other sites More sharing options...
Dirtymilkman Posted February 1, 2017 Share Posted February 1, 2017 Center punch the bolt and drill with a left handed drill bit. Most of the time it will spin out while drilling. Don't drill all the way through the bolt though. Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-360452 Share on other sites More sharing options...
Moparmike Posted February 25, 2017 Author Share Posted February 25, 2017 Ok guys put about 2500 miles on my truck running great ..this morning same problem going to work same injector broke 2 new studs ..what's going on here..I'm hoping that I can just screw the Olds 2 out this time and replace with new grade 8 bolts again but this is crazy ..any thing I should look for to cause this problem.. Quote Link to comment https://www.bigmacktrucks.com/topic/48545-2000-mack-e7-motor/#findComment-362620 Share on other sites More sharing options...
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