Out of all the videos yours is the most helpful. I just got a International paystar 5000 with a 290 big cam. I see oil on the manifold. Going to do the valve and injectors adjustments to see if that is the problem. Thank you.
Nice vid! I had to clean the injector screens on my NHC250 ( M925 5 ton) a couple years back, and runnin' those adjustments per the Mil manual, was quite the different experience for me....especially when you're used to adjusting valves on a small block chebby. lol ...my shop teacher also used the same reference to age. Never have forgot that firing order.
Must follow what on wrote in SPEC on engine.... DO NOT LOWER IT OR OVER HIGER.... the injectors shaft can JAM AND PUSH BROKE INTO PISTON and the answer is GENERAL overhaul
Great video! Do you have a picture or video of the manuals you need to work on these engines?I have a NTC 335 small cam that needs a complete overhaul and the book in this video has all the specs to rebuild or do you need multiple manuals?Thanks for the help!
Thanks for a informative video, I have got to set a small cam non top stop injector NHC250. I am following the torque method as I don't have the equipment to carry out the dial gauge method. All information I have suggests 72 inlbs, is this correct?
Yes that is where I set them. Just be sure and go in firing order. Set injector first then valves on same cylinder. Valve setting will be .014 and .027 I think. Don’t go in the order that I did.
First thanks for posting...second I dont suppose you have a link where I can get a small cam shop manual...I run dumptrucks and I try to mostly stick with big cam stuff but I've came into a couple small cams, and I'd really like to have a book for them as they appear to be good solid engines...but this video was very helpful to me, I really appreciate that you were willing to take your time to make it
The book I have covers both, some of them refer to the small cam as 2inch cam in the specs. Not a lot of difference in them. A small cam only is probably hard to find, I had one once but it was burned in a fire. Check in yours and see if it shows the specs for 2 inch cam. You are welcome hope it was helpful.
Do you have link or part number on the fork shaped took you're using to work the injector rocker? I'm getting ready to do my overhead soon and I can't find one anywhere
Small cam is the predecessor to the Big cam. Not a lot of difference, most big cams had top stop injectors. Of course the camshaft is bigger, rods are different, but a lot of parts will interchange between them.
72 i believe, but you have to do it in the firing order not like video, you would set both valves and injectors at same time on the same cylinder. Torque method works better if there is a lot of camshaft wear because you are setting on outer base circle of cam and making sure injector plunger is tight to injector cup.
i have a small cam 855.it has top stop injectors. i dont have a dial indictor so i was going to do the 72 inch pound torque. i must be doing it wrong it bottoms out injector at 72 inch pounds. how do you do the torque method?
Set timing mark to 1-6vs. If valves are loose on no. 1 start there. Adjust injector first, it will bottom out at 72in. Lbs. set valves .014 intake .027 exhaust. Then go to 2-5 vs. set number 5 same way. Go in firing order to number 6 It is called the outer base circle. It’s different.
Greetings from Odessa, Ukraine. Thank you for a very useful video! I have an International 9700, a Cummins NT855 engine. The question of adjusting the injector. Installed 0.170 inch (4.32mm), but not suitable. Could there be another adjustment? Tell me please.
could you not set valve lash like this? Set the gauge on the rocker arm. Loosen the adj screw till the rocker is on the valve. Run down screw till you get your gap. Tighten nut?
I suppose you could, but the injector is what I have the indicator on. After the injector is set the preload is there for valve adjustment. What we are looking for is basically zero backlash on injector. Valve lash is usually set by feeler gauges though. There is another way to set Cummins overhead, torque method. I will have a video hopefully soon on it.
Yeah i know. I just like finding odd ways to do things. Boredom and all lol. Never heard of the torque method, unless your talking about running down the adj screw with a inch pound, torque limiting screw driver to mimic the same effect of an outside mic. I hear a lot of guys talking about that. Either way im looking forward to it.
I think for valve lash the feeler gauge is the way to go, the injector stetting on the other hand is impossible with a feeler gauge. Basically what we are trying to achieve is zero lash on the injector. The dial indicator assumes the exact lift of the cam lobe, torque method assumes friction=torque=oil film= correct setting. Thanks for watching! Stay tuned!!!!!
Hello my friend or lover from Syria I admire your work my friend can I ask you for a favour can you send this manual book for me if this possible or can you send a copy for it
boa noite eu vou trocar a junta do cabeçote do motor cumens smal cam eu não tenho costume com esses motor você pode mim da alguma implicação como coloca o cabesote regulagem de valvula e dos bico injetor por favor
If it's a big cam it has top stop injectors, you have to set same way in firing order as dial indicator method but you use 6 inch pound torque wrench, the injector plunger travel is preset on top stop injectors, the setting varies but the most common is .230 ths
Digginok I do overheads on 855 Cummins all the time, is to short to do to make a video on..😂🤣 A B C one exhaust and intake and injector, set the valve lash and move to the next.. and so on....
Jonathan Williams so make us a video, I’m sure you know the shortcuts and a lot of people don’t have a clue as to how to do it. Not doubting your time of 15 minutes, but a video would be some good proof.
I didn’t know setting overhead was a timed event lol! I didn’t expect people who already know how to did this to watch it. Make a video, it will be used, lots of people are looking for information on these engines. Thanks for the feedback though.
Anytime you’re working in a retail environment, it’s a timed event. The quicker you get a job done, the sooner you can move on to the next job. Retail shops are always going to rate their technicians on efficiency. The better your efficiency, the better you’re going to look to the company.
Rail Fan I agree with that, I worked in a shop once that had what they called flat rate. This is my truck and I was trying to help show some others how to do the job. But in my opinion fast doesn’t mean it’s right. Like I said before if you can make a good video of how to do it, many people would appreciate it.
