Dax DeCelle Posted February 19 Share Posted February 19 Anyone know the diameter and thread numbers for DT400 series injectors? I need to make a puller. I know Hy Capacity sells one, but I’d like to make my own with stuff on hand. Just can’t find a nut to fit. Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 19 Share Posted February 19 6 minutes ago, Dax DeCelle said: Anyone know the diameter and thread numbers for DT400 series injectors? I need to make a puller. I know Hy Capacity sells one, but I’d like to make my own with stuff on hand. Just can’t find a nut to fit. I made one and I think 9/16 fine thread. This should be the same as some old lug nuts but don’t quote me on size or threads. I know I found a nut in our collection of crap and welded it to a pipe couple that fit our bid slam hammer 1 Quote Link to comment Share on other sites More sharing options...
Dax DeCelle Posted February 19 Author Share Posted February 19 Great. I’ll check into that. Thanks. Quote Link to comment Share on other sites More sharing options...
Injpumped Posted February 19 Share Posted February 19 threads where the injection line screw on are 14mm X 1.5. 1 Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 20 Share Posted February 20 1 hour ago, Injpumped said: threads where the injection line screw on are 14mm X 1.5. That’s the ticket. I knew it was a lug nut I made it out of. Long time ago though. We always had all sizes of metric , standard stuff we would squirrel away if you needed something. Quote Link to comment Share on other sites More sharing options...
Dax DeCelle Posted February 20 Author Share Posted February 20 Metric? Weird. Thanks for the info. I’m working something up. Quote Link to comment Share on other sites More sharing options...
Injpumped Posted February 20 Share Posted February 20 361/407/ 282 are 9/16-18. Quote Link to comment Share on other sites More sharing options...
IHC_1470 Posted February 20 Share Posted February 20 Old injection line works well as a source for parts. The one I made I just took a 1 1/2 shaft drill hole slightly larger than the line and brazed a steel ball on the top of the line. Made a pretty good puller. 1 Quote Link to comment Share on other sites More sharing options...
Farmall1066 Posted February 20 Share Posted February 20 11 hours ago, IHC_1470 said: Old injection line works well as a source for parts. The one I made I just took a 1 1/2 shaft drill hole slightly larger than the line and brazed a steel ball on the top of the line. Made a pretty good puller. We did the same, took a junk line, cut it, took the nut, and welded another nut to it to fit the slide hammer, works great for the stubborn nozzles! Quote Link to comment Share on other sites More sharing options...
Injpumped Posted February 20 Share Posted February 20 I use an old inj line nut, and tap the area the line passes through to 3/8 coarse, and it screws right on my little slide hammer. More force needed, then the big slide hammer is needed which will require a larger nut welded to the old inj line nut. 1 Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 20 Share Posted February 20 16 minutes ago, Injpumped said: I use an old inj line nut, and tap the area the line passes through to 3/8 coarse, and it screws right on my little slide hammer. More force needed, then the big slide hammer is needed which will require a larger nut welded to the old inj line nut. With the big slide hammer a couple knocks brass tube and all come out. If injector is needed just cut open tube. Thanks for the info I know I made a puller out of lug nut. Now if I look I bet we have one for 361 and 400 series. Had them made to use on slide hammer and to use as a pulled under fuel tank. Quote Link to comment Share on other sites More sharing options...
756puller Posted February 20 Share Posted February 20 The one from hycap it made so it forces the injector out of the brass tube so you don't get the oil pan full off coolant or at least that's my understanding of it. Quote Link to comment Share on other sites More sharing options...
Dax DeCelle Posted February 21 Author Share Posted February 21 Well what a way to waste a day. So I was determined to make a puller with stuff on hand. I don’t have any lug nuts with that thread pattern, or extra injector nuts, but in my search, I came across a junk switch with an interesting nut on it. It was the perfect fit on the injectors. I started with that and set out to make my version on the Hy Capacity puller. I used this nut, a 3/8” carriage bolt, some washers, and a section of 1-1/2” fence rail. It’s what I had on hand. The problem was that I knew none of it would stand up to serious torque, but it’s what I had. It pulled 3 injectors before things started failing. Those injectors are really stuck. I pulled 1, 5, & 6. The other three are giving me a serious fight. I even tried the pulling nut in the slide hammer. I just wore a hole in my hand with that. I went back to the puller and stripped two sections of threads on the pulling bolt. I’m going to find a nut with those threads and build something more substantial. I can’t believe how stuck these injectors are. 1 Quote Link to comment Share on other sites More sharing options...
Ian Beale Posted February 21 Share Posted February 21 On 2/20/2022 at 10:23 AM, Dax DeCelle said: Metric? Weird. Thanks for the info. I’m working something up. Bosch by any chance? I met that pulling injectors on an AC Forty Five grader Quote Link to comment Share on other sites More sharing options...
redturbo Posted February 21 Share Posted February 21 Got this puller for $70 from Kiene Diesel, less than HC wanted. Quote Link to comment Share on other sites More sharing options...
Jeff-C-IL Posted February 21 Share Posted February 21 I shouldn't admit this, but I never had any problems pulling those injectors by simply taking the bolt out of the hold down clip, leaving the clip in place, and using a small prybar under the clip right slid right up to the injector. I had a few where we needed a small wedge/bar on both sides of the clip. Y'all tell me if "this is a terrible idea because ...." so I can stop doing it please (I'm being serious). Quote Link to comment Share on other sites More sharing options...
dale560 Posted February 21 Share Posted February 21 13 minutes ago, Jeff-C-IL said: I shouldn't admit this, but I never had any problems pulling those injectors by simply taking the bolt out of the hold down clip, leaving the clip in place, and using a small prybar under the clip right slid right up to the injector. I had a few where we needed a small wedge/bar on both sides of the clip. Y'all tell me if "this is a terrible idea because ...." so I can stop doing it please (I'm being serious). Did this many times also. The nut welded onto a big slide hammer works best to remove any of them. Quote Link to comment Share on other sites More sharing options...
Dax DeCelle Posted March 1 Author Share Posted March 1 Version 2.0 has failed. These injectors are very, very stuck. The pulling nut pulled the threads and seized. I guess I’ll try a 1/2” pulling bolt next. Quote Link to comment Share on other sites More sharing options...
midnightman Posted March 1 Share Posted March 1 Maybe the impact from a slide hammer puller might break it free? That’s the style I’ve built and have never had an issue. 🤷♂️ Quote Link to comment Share on other sites More sharing options...
snoshoe Posted March 1 Share Posted March 1 Don't know what grade bolt and nut you're using. Ep lube like 80-90 on the threads would help. Quote Link to comment Share on other sites More sharing options...
Dax DeCelle Posted March 1 Author Share Posted March 1 The slide hammer just wore a hole in my hand. This particular bolt was a grade 5 —3/8” fine thread. Quote Link to comment Share on other sites More sharing options...
Dax DeCelle Posted March 1 Author Share Posted March 1 The scars on the bolt are from gripping it with vise grips and trying to back off the nut. Quote Link to comment Share on other sites More sharing options...
snoshoe Posted March 1 Share Posted March 1 A closer look says the washer was to soft as well. Lube does make a big difference with pullers. I use gl5 on threads and moly disulfide on thrust surfaces. I have harbor freight pullers I've used for years with impacts. Always use ep lube. 1 Quote Link to comment Share on other sites More sharing options...
IHC_1470 Posted March 1 Share Posted March 1 If they are coming that hard I hope you have the coolant drained. Time for the pick and get the rubber umbrella out of the head so you can get some penetrating oil soaking in there if you have not all ready done it. Make you slot a little wider or cut one on the other side. Get it under pressure and that take an air hammer and small punch and jar the nozzle. It may help break it loose especially if you let it soak a day or so. Quote Link to comment Share on other sites More sharing options...
801486 Posted March 1 Share Posted March 1 A wheel stud nut from an 88-98 Chevy pickup will screw on an injector from 400 series engines. I welded a bolt to the nut and used my slide hammer vise grips. Have removed three sets so far. Quote Link to comment Share on other sites More sharing options...
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