Haven’t watched this yet, but thought I’d chime in. I was a Cummins tech in Atlanta in the 80’s, and I had a cheat I’d use for adjusting the valves on the 855. I’d run down the adjusting screws to squeeze out any excess oil in the push tube cups, then back them off. Then I’d set my feeler gage in place and use my 5-6 in/lb torque wrench to tighten the adjusting screws. Lock them down and done. I got consistent results every time, and I didn’t wear out my feeler gages slipping them in and out trying to get the “feel” just right. For anyone who doesn’t know, the 5-6 in/lb torque wrench was for setting the injector push tube clearance to zero. I used that principle to set my valves, but with the feeler gage in place, I got perfect clearance every time. I haven’t touched a Cummins engine in 30 years, so I’m behind on the technology and current design, but I’m sure there’s a lot of those engines still in service today.
I always wore out my feeler gauges, but it was always fun. Loved working on the old Cummins Engines, especially using the uniform plunger travel method for injector adjustment.
I Armando Rabino Automotive Mechanic Student of TESDA. I present this time. The day Dec. 14,2020 I watch the video. How to adjust Cummins engine valves and injectors adjustment. I focus to watch a video. To big in come. My big knowledge, and my personal Experience in this time. And I thank you.
just did an 855 big cam in my dragline today. i was goin off the newer cummins book... way off. older big cams are different got it to finnaly fire off though. good work very thorough i like it.
boss thank you for your a good man thank you for share your knowledge god bless you always im a filipino but im woking here in dubai as a heavy equipment mechanic i hope in the future i asking about my problem regarding cummins engine..thank you
intake 11 thousands and exhaust 23 . If it is a big cam 290 you set it like I described in the video to 6 inch pounds on in inner base circle method. If it is a small cam 290 set it on outer Base circle method to 72 inch pounds on injector.On outer Base circle you adjust the injectors on the same cylinder as the valves.
Thank you so very much I have been looking for the answers to questions I had on this old Cummins I'm working on and you absolutely answered every one of them and I greatly appreciate it!!
Never heard it called the inner/outer base circle method. On the big cam engines, we always ran the injector on 1 ahead of the cylinder we were adjusting the valves. For instance, if we ran the valves on 1, we would set the injector on 5. On the small cams we would adjust the injector on the same cylinder as the valves.
Great video. I took my first big cam 400 apart today. I noticed on mine , just like yours in the video.... The pushrods for injectors all 6 arent the same. 3 are tapered on the end and 3 aren't. What's the purpose for this? Thanks much!
When you have the heads done over and your starting over. Where do you start over . So I’m going to intall my heads then the pushrods. When I install my rocker boxes I’m assuming back off all my set screw on all my rockers. First set my injectors then follow my procedures. This is my first Cummins
I,m lookin at buying a 50's K Dub with a 220 in it and i was curious ( it hasn't ran in 25+ years) if the 220 was a sleeved motor and easily rebuild-able or if it has to be bored out, I'm tryin to figure out if i should even think of keepin the motor or just swapping it out for something else, it'll end up being a roll back tow truck
Would you be able to explain to me how to adjust the cross heads. My exhaust crossheads when it’s their turn to be adjusted during inner base their at the correct lash but when i cycle over to next letter it seems to be to loose and create a tick and the cross T moves when looking at my valves on their cycle letter the exhaust valve seems to be lower than the intake. I have read the manual but It’s not the easies to understand.
Q: Looking at buying a 1977 truck fitted with BC350. Owner has ‘adjusted’ injectors and says it now fills shed with smoke. Are the injectors easy to set without reseting valves and how likely is it that its only inj that needs setting up. How many hr work to set injectors at a diesel workshop should l expect? Thanks
I have a N14 RedTop Celect+ 460hp. Started smelling coolant and found bubbling at block and front head. I'm guessing this is the problem but wondering if a blown head gasket will allow coolant to get into a cylinder. Reason I ask is I stopped the engine for a few minutes to check oil and upon starting I generated a large steam cloud for a few seconds, then it cleared up. No engine miss, no power loss but temps climb and require engine fan use to keep temps in check. What is the clearance for the rockers upon reassembly. Your videos are great! Thx! Kelly
That n-14 should be 14 in take and 27 exhaust. Injectors will be set on same cylinder as valves and adjust injector before valves by loosening locknut and tighten injector set screw till timing plunger touches (which you will feel) and then back out two flats.
is this at tc or at a b or c depending on cylinder because i am confused because outer base circle says adjust to 90 inch pounds injector first then valves while the pulley is on the marks and what do you mean by two flats big cam 4 855 stc injector
+Dons Gee Don't adjust anything on tc. Start a A which will be cylinder 1 or 6. If the valves are loose on 6 that means you are on tdc on that cylinder so you would start there and then go in firing order 1, 5 , 3 , 6 , 2 , 4. B mark covers cylinders 2 and 5 and C mark covers cylinders 3 and 4. It takes 2 complete revolutions of crankshaft to adjust all valves. And yes start by adjusting Injector on that cylinder first and the do your valve , then rotate to next letter on accessory drive until all have been adjusted.
Good info thanks. But I am still getting mixed specs (valve and injector)for this 1991 Cummins STC 444 CPL 1280 serial# 11622768. I believe this is an 88 big cam IV. The book method I see is for a 6 lb-in torque wrench with a lever(3822648) for the injectors and 0.11 and 0.23 on the valves. Am I on the right path?
Love your videos. On the outer base circle method (Mine is an old Big Cam 4 CPL 1594 with STC injectors) am I understanding correctly that the only part that I have to torque (to 90 inch pounds or whatever it is is with dial torque wrench) is the injector rocker correct? The rockers for the valves I do with feeler gauges correct? Doing it this way you do not mess with that 6 inch pound setting that I keep hearing thrown around if I understand it right(which I understand is for the INNER base circle)? There is so much misinformation about this on the web and forums that it is unbelievable.
Great thanks, One other question: How do I know what torque number to torque the injectors to? I cannot seem to find the OBC torque rating for the 1594 CPL anywhere. It is in a John Deere 8970 tractor. Any ideas how to find something like this out? Our local Cummins dealer in Houston is clueless and think that that CPL is a N14 when its clearly a BCIV.
The outer base circle, the inner base circle was only used on big cam engines, in later years the engines were all set at the outer base circle except the M 11 .
Hey, I'm re-building a Cummins NTA 855G big cam. Everything is on set and just need to adjust and need to know the injector travel. Please reply, thanks
I know this is a few years old but I have a small cam NTC350 with top stop injectors. I ran the overhead just as you did and told I was wrong. Am I wrong? Thank you.
David Pokorzynski Yeah ,if you run valves on a Cat or international they use valve overlap on the companion cylinder and loose on the one to adjust, the old Cummins make change your train of thinking.
David Pokorzynski No, on a small cam start at A mark on accessory drive and see if 1 or 6 is loose, first adjust your injector down to 72 inch pounds and the n valves intake 11 and exhaust 23. B Mark is 2 or 5 and C is 3 or 4. That's Obc method.
did you read my comment on the 68fre dodge transmission about overdrive underdrive clutch hub from sonnax great company to buy performace transmission parts from
+Adam Still I did, I actually did the last 2 with bd performance kits with the double disc converter, they too use double sided frictions, and upgraded pressure plates and a inline module that increases line pressure called protect 68. I was really happy with those. I have used sonnax parts on 4l60e transmissions alot and was happy with them as well.
Hey man so I’m running the over head on a 365 stc big cam and I was wondering if not having the engine in TDC before disassembly would have any effect in the reassembling and adjusting process ?
I have an early 70's NHRS Cummins (supercharged) operating a fire pump. I have been told that it is reverse rotation. #1 how do I determine. Looking at the front of the engine the crank balancer turns clock wise. #2 what kind of overhead setting do I use inner or outer base method? #3 what are the injectors settings (torque) and valve clearance, cap torque?
I'm confused, data plate says zero lash on injectors and nothing for injector torque? I just had the overhead adjustment done, and now it smokes like crazy. way worse then before and I think fuel is mixing into oil.... he didn't do something right and of course I can't get the guy to return my calls. so I am wanting to do it myself
Josh Gibson Start out on accessory drive mark A, valves will be loose on 1 or 6 , on the cylinder with valves loose adjust injectors to 72 inch pounds, make sure you adjust Injector first before valves, and then on same cylinder adjust intake to 11 and exhaust to 23 that's what your data plate should say. Go in firing order, 1,5,3,6,2,4.
So I have a 444 cummins and it says right on cpl tag .011 INT and .023 Exhaust. So I guess I would use the IBC method? You said on your 444 you use the OBC method. .014 INT and .027 Exhaust. It also says on my tag T.S. Zero Lash. This is for a 444 STC engine CPL# 1280. So I am very confused here.
Sir can help me?engine ntc 400 engine with stc injector,can adjust valve n injector in 1 cylinder? Or top number 1 and i adjust injector number 4 90 inch pound??
I’ve got an older n14 and I keep bending and breaking injector push tubes. Twice on number 4 now on number 1 cam and rollers look fine I’ve herd that if the Jake’s are sticking it might cause this. Any help would be appreciated
Biggest reason for bent push tubes is the engine is probably set wrong, set it at the outer base circle which means when on A the cyl set should be 1 or 6, whichever has both valves closed. Intake clearance should be 14 thou, exhaust 27 thou and injector 125 inch pound on mechanical engine or on electronic N 14 bottom out injector and back off 2 flats of adjusting nut. Other possibility is that the accessory drive has been removed and not timed to the camshaft when reinstalled.
The setting would be outer base circle, when on A or 1 - 6 B 2 - 5 C 3 - 4 you set injector at 72 inch pound the intake valve at 14 thou, and the exhaust valve at 27 thou. This should be done when engine Is hot firing order is 1 5 3 6 2 4 the cylinder to set is the one with the valves shut colder I usually set at 60 inch pound and intake 13 and exhaust 25. then after warming up reset the the valves and injectors.
I had my old versatile 800 n855c250 running great finished seeding Friday when the vent started smoking wild blow by. I finished went to move it 2 miles next day it started and ran great and half way home the coolant filled the crank case as pressured up as the block was would you guess head bolt or gasket ?
jeff amoth I would guess head gasket, pull the turbo and exhaust manifold and maybe you can see a wet valve port, or sometimes I take a pressure tester and pump up the coolant system and can hear it.
+jeff amoth I have seen head bolts do that also, could be either one . You could pop your valve covers and just grab the head bolts and yank on them with a pair of pliers and see if one comes out. Oh yeah no turbo n855c, don't see many natural aspirated ones. Thanks for your comment and for watching.
I tried pressuring the system, it drained down in about 15 minutes couldn't hear for sure what head was leaking or were it was leaking. I pulled the middle head after finding no broken head bolts because there seemed to be moister on outside of head on the block.I deiced to pull all 3 after not finding any definite failed spot on any of the gasket's.I didn't have a dial indicator so I slid a .007 feeler around the edges of the sleeve every thing was below it and looks flat will check it later. the tractor is 116 miles from the nearest Cummings dealer in the US hard to have some on just swing by to take a look.I was told its hard to see the failure of the gasketts some times? on all the old cases I have worked on I could see the problem.
jeff amoth I wonder if an Injector copper cracked, any pistons have any white crusty looking crap on them? Run each piston down to bottom dead center and see if you have a cracked liner. Look at heads real close and make sure you don't see a crack between a water port and where the fire ring is. Sometimes problems like that can be hard to find, look at Injector coppers real close too.
grease monkey101 the bridges on the intake side are for Jakes. someone probably put them in at some point in that engines life. plus I wasn't paying attention at first to see that engine doesn't have Jakes anyway. no worries, just figured I'd point that out
MattB. Yeah I just put them back where they were, and wasn't worried about it because there were no Jake's, thanks for watching and thanks for commenting.
Yes sir I have an old versatile 895 with the 855 big cam with around 13000 hours was getting oil in the water 100 hours ago replaced the cooler and now in getting water in the oil seem to run fine until today and was running hot that's when I noticed them water vapor coming from the blowby what's the odd of a bad oil cooler or cooler seals?
Maynard 59 I would think you have a separate issue, sounds like a head gasket, oil cooler typically blow the back in the coolant because the pressures are higher.
grease monkey101 kinda what I suspect it seemed to have a lot of pressure in the cooling system although it was around 220 degrees n blowing steam didn't want to pull the cap off any tricks to picking the right head the first time
dale evans That's what I was worried about i had replaced the oil cooler and I guess I didn't get the O rings in far enough some of them older engines will pressure up to 75 - 80 lbs of oil pressure and I guess push them out and made a big mess then when I shut I off the water pressure forced water in the oil anyway got an new O ring kit and did it all over and seams to be working fine
How to. Marking pulley.ABC....please correction my explain.... Turn pulley cylinder 1 top position thats mean the mariking put writen A? and turn pulley to cylinder 5 to top position thats mean is a marking B and turn pulley to cylinder no 3 to top pisitiom also thats mean marking is C? Is correct? Please sir help me to more to know that
jose rubio Start out on accessory drive mark A and check valves to see if valves are loose on #1 or # 6 . So if valves are loose on #1 then adjust Injector on same cylinder you are adjusting valves which would be #1. Adjust Injector to 72 inch pounds , and then set valves to intake .011 thousandths and exhaust to 23 thousandths. Go to accessory drive mark B and you will be on #2 or #5 , if you did cylinder #1 then cylinder #5 will be next. Firing order is 1, 5 ,3,6,2,4 .So the next mark will be C and You'll be on cylinder #3. Then go back to A to do the other cylinders.
ok. Am I looking for a riveted tag or is it stamped in the cast? Im cleaning thendirt off of it now. The engine isnt the original engine in the truck so the vin is no help
ok. My 5.9 cummins is like that. This engine doesnt have the tag on it. I know I have the right injectors because we got a part number off of the old injectors. (Top stop injectors) the engine has what looks to be millitary paint on it. single long valve cover with a slanted valve box riser. Just trying to make sure i have the right valve specs. We didnt loosen any of the valves when we pulled injectors just slipped the injectors out after moving the injector rockers
hola muy buena la enseñanza de la calibración de balbulas y inyectores me gustaría saber l orden de calibrado de inyectores y balbulas del bican y esmolcan Muchas gracias
+Marc Robinson Well they are pretty similar, usually I just look at the data plate on the accessory drive cover, it will say ntc 350 or or nta 290 . I Know the 400's had larger crank dampners than the 290's, but I don't remember if the 350's we're the same as the 400 or 290.I guess I have never run across a 290 or 350 with the data plate missing. I am sure there is an old Cummins mechanic somewhere that could rattle off all the variations, but I usually just go off the plate.
grease monkey101 ....its very easy...Cummin 290 n 350 also big cam...but..290 doesn't use upper cooler..350 use it...n one another thing the timing cam for 290 n 350 also not the same...
we just replaced number 1 and 2 injector on big cam 4 855 engine with stc injectors and replaced gaskets on number 3and 4 cylinder rotate engine and get a clicking noise on both heads we adjusted the motor using outer base circle we adjusted number 1 cylinder to 90 inch pound and then the valves then finished adjusting the other 3 clyinders now we get a clicking noise when we rotate the motor using the starter and a jumper clicking noise is worse when we start building up oil pressure any help would be appreciated thanks
+Dons Gee What gaskets? Head gaskets, rocker box gaskets. Make sure the rocker box hold down bolts are tight, it sounds like you have a valve loose, was it ticking before you changed injectors? What are valve lash settings on your engine? 14 and 27 or 11 and 23?
we replaced rocker and jake gaskets set valves to 14 and 27 and injector to 90 inch pounds we change injector cylinder two was white smoke my friend wanted to change both injectors so we would not have to touch that head again for a while but after getting injector we noticed the bottom oring was hard and flat on old injector i put my hands on the rocker for the injector and the injector feels like it is clicking we tightened the rocker hold down bolt to 60 foot pounds don know what we did to get a clicking noise have done the out base circle a coulpe of times never had a problem with clicking noise untill now i think the injector clicking noise is when the injector is coming back up
Haven’t watched this yet, but thought I’d chime in. I was a Cummins tech in Atlanta in the 80’s, and I had a cheat I’d use for adjusting the valves on the 855. I’d run down the adjusting screws to squeeze out any excess oil in the push tube cups, then back them off. Then I’d set my feeler gage in place and use my 5-6 in/lb torque wrench to tighten the adjusting screws. Lock them down and done. I got consistent results every time, and I didn’t wear out my feeler gages slipping them in and out trying to get the “feel” just right. For anyone who doesn’t know, the 5-6 in/lb torque wrench was for setting the injector push tube clearance to zero. I used that principle to set my valves, but with the feeler gage in place, I got perfect clearance every time. I haven’t touched a Cummins engine in 30 years, so I’m behind on the technology and current design, but I’m sure there’s a lot of those engines still in service today.
I always wore out my feeler gauges, but it was always fun. Loved working on the old Cummins Engines, especially using the uniform plunger travel method for injector adjustment.
Yep the good old days of working 14 hours and in bed with her
Love it
I Armando Rabino
Automotive Mechanic
Student of TESDA. I present this time. The day Dec. 14,2020
I watch the video. How to adjust
Cummins engine valves and injectors adjustment. I focus to watch a video. To big in come.
My big knowledge, and my personal
Experience in this time. And I thank you.
Looking back at your older videos what a wealth of knowledge...👍
Im only going to watch 4 or 50 more times. Great information.
just did an 855 big cam in my dragline today. i was goin off the newer cummins book... way off. older big cams are different got it to finnaly fire off though. good work very thorough i like it.
boss thank you for your a good man thank you for share your knowledge god bless you always im a filipino but im woking here in dubai as a heavy equipment mechanic i hope in the future i asking about my problem regarding cummins engine..thank you
intake 11 thousands and exhaust 23 . If it is a big cam 290 you set it like I described in the video to 6 inch pounds on in inner base circle method. If it is a small cam 290 set it on outer Base circle method to 72 inch pounds on injector.On outer Base circle you adjust the injectors on the same cylinder as the valves.
western truck and tractor repair Brother where do u fix the truck. I have 2017 x 15 cummins need to get valve adjustment done.
Thank you so very much I have been looking for the answers to questions I had on this old Cummins I'm working on and you absolutely answered every one of them and I greatly appreciate it!!
Worked. On these in the eighties I used the IBC method great old engines gaskets all fell off them no scraping for hours
Not a bad old engine thanks for showing us how to do the over head
Thank u very much for giving good information sir.
At 1:32 the jake brake cross heads are positioned on the intake valves.
That might mean something if this one had jakes.
@@westerntruckandtractorrepa1353 - Judging from your reply, safe to assume it does not have jakes.
Never heard it called the inner/outer base circle method. On the big cam engines, we always ran the injector on 1 ahead of the cylinder we were adjusting the valves. For instance, if we ran the valves on 1, we would set the injector on 5. On the small cams we would adjust the injector on the same cylinder as the valves.
Very good videos,I do have a question 80 Cummins ntc 300 what is the method for valve and injectors adjustment
Video helped me a lot. Thank you
I can guarantee you is good to ue...I myself already use for 11 year...trust my experience...
Great video. I took my first big cam 400 apart today. I noticed on mine , just like yours in the video.... The pushrods for injectors all 6 arent the same. 3 are tapered on the end and 3 aren't. What's the purpose for this? Thanks much!
Good Jod Sr..gobless po
When you have the heads done over and your starting over. Where do you start over . So I’m going to intall my heads then the pushrods. When I install my rocker boxes I’m assuming back off all my set screw on all my rockers. First set my injectors then follow my procedures. This is my first Cummins
mas bien gracias a ustedes por enseñanzarnos q dios los bendiga y les mucha sabiduría
On NT855 big cam with STC injector and with OBC method.did we adjust the valve and the injector in the same cyl or not
Running the rack on a KTA 600?
Please explain , difference. Ibc method and once methods. Never heard of these terms. thanks in advance.
I,m lookin at buying a 50's K Dub with a 220 in it and i was curious ( it hasn't ran in 25+ years) if the 220 was a sleeved motor and easily rebuild-able or if it has to be bored out, I'm tryin to figure out if i should even think of keepin the motor or just swapping it out for something else, it'll end up being a roll back tow truck
Would you be able to explain to me how to adjust the cross heads. My exhaust crossheads when it’s their turn to be adjusted during inner base their at the correct lash but when i cycle over to next letter it seems to be to loose and create a tick and the cross T moves when looking at my valves on their cycle letter the exhaust valve seems to be lower than the intake. I have read the manual but It’s not the easies to understand.
Q: Looking at buying a 1977 truck fitted with BC350. Owner has ‘adjusted’ injectors and says it now fills shed with smoke. Are the injectors easy to set without reseting valves and how likely is it that its only inj that needs setting up.
How many hr work to set injectors at a diesel workshop should l expect?
Thanks
THANK YOU!! do you have any information on the NT-280 F looking for injector information
I have a N14 RedTop Celect+ 460hp. Started smelling coolant and found bubbling at block and front head. I'm guessing this is the problem but wondering if a blown head gasket will allow coolant to get into a cylinder. Reason I ask is I stopped the engine for a few minutes to check oil and upon starting I generated a large steam cloud for a few seconds, then it cleared up. No engine miss, no power loss but temps climb and require engine fan use to keep temps in check. What is the clearance for the rockers upon reassembly. Your videos are great! Thx! Kelly
+Swede Jr. Well you definitely have a blown head gasket.
That n-14 should be 14 in take and 27 exhaust. Injectors will be set on same cylinder as valves and adjust injector before valves by loosening locknut and tighten injector set screw till timing plunger touches (which you will feel) and then back out two flats.
is this at tc or at a b or c depending on cylinder because i am confused because outer base circle says adjust to 90 inch pounds injector first then valves while the pulley is on the marks and what do you mean by two flats big cam 4 855 stc injector
+Dons Gee Don't adjust anything on tc. Start a A which will be cylinder 1 or 6. If the valves are loose on 6 that means you are on tdc on that cylinder so you would start there and then go in firing order 1, 5 , 3 , 6 , 2 , 4. B mark covers cylinders 2 and 5 and C mark covers cylinders 3 and 4. It takes 2 complete revolutions of crankshaft to adjust all valves. And yes start by adjusting Injector on that cylinder first and the do your valve , then rotate to next letter on accessory drive until all have been adjusted.
+Dons Gee The head of the bolt where the wrench goes on has 6 flats on it make a mark on head and then 2 flats on bolt and move to mark on head.
Good info thanks. But I am still getting mixed specs (valve and injector)for this 1991 Cummins STC 444 CPL 1280 serial# 11622768. I believe this is an 88 big cam IV. The book method I see is for a 6 lb-in torque wrench with a lever(3822648) for the injectors and 0.11 and 0.23 on the valves. Am I on the right path?
Love your videos. On the outer base circle method (Mine is an old Big Cam 4 CPL 1594 with STC injectors) am I understanding correctly that the only part that I have to torque (to 90 inch pounds or whatever it is is with dial torque wrench) is the injector rocker correct? The rockers for the valves I do with feeler gauges correct? Doing it this way you do not mess with that 6 inch pound setting that I keep hearing thrown around if I understand it right(which I understand is for the INNER base circle)? There is so much misinformation about this on the web and forums that it is unbelievable.
Yes , that is correct.
Great thanks, One other question: How do I know what torque number to torque the injectors to? I cannot seem to find the OBC torque rating for the 1594 CPL anywhere. It is in a John Deere 8970 tractor. Any ideas how to find something like this out? Our local Cummins dealer in Houston is clueless and think that that CPL is a N14 when its clearly a BCIV.
El Campo You set yours to 125 inch pounds on the same cylinder you are adjusting valves on .
I just pulled my injectors on my old Cummins 400 big cam. Is this process what I’m gonna need to do? First time doing this today.
Why are the Jake bridges both on the inside where the intake valve would be I thought the Jake Bridges went on the exhaust valve for the jakes
You had helped me out with a 350 small cam overhead once. wondering if you could guide me through an N14?
Thanks i want to learn cummins.......🙂
How do you set the injectors on a ism 370 Cummins?
Sir, I have a question What kind of method do i use to get valve clearance on NH220 Cummins? The Ibc or Obc method?? Thanks.
The outer base circle, the inner base circle was only used on big cam engines, in later years the engines were all set at the outer base circle except the M 11 .
Cummins NT855, i need to know how much you have regulated the injector, or how many turns of the screw otherwise. Thnks
Great Cummins Video
in a filler gauge how much you give a clearance in both valve and injector?
Hey, I'm re-building a Cummins NTA 855G big cam. Everything is on set and just need to adjust and need to know the injector travel. Please reply, thanks
I know this is a few years old but I have a small cam NTC350 with top stop injectors. I ran the overhead just as you did and told I was wrong. Am I wrong? Thank you.
I have this same cummins 250, I want to run the overhead where can I find the specs to do so?
Well wish I could loan you my collection of books
Spell check problem. sorry outer base circle method and inner base circle method. What are these methods? Thanks again.
thanks for sharing! it seems people really struggle with the overhead on these old cummkns engines.
David Pokorzynski Yeah ,if you run valves on a Cat or international they use valve overlap on the companion cylinder and loose on the one to adjust, the old Cummins make change your train of thinking.
is this the same method you would use on a 350 small cam?
David Pokorzynski No, on a small cam start at A mark on accessory drive and see if 1 or 6 is loose, first adjust your injector down to 72 inch pounds and the n valves intake 11 and exhaust 23. B Mark is 2 or 5 and C is 3 or 4. That's Obc method.
okay thank you! and a small cam 350 does have top stop injectors correct?
+David Pokorzynski Yes they should have top stops if I remember correctly.
Hi, my engine is NT855-G6 may the firing order and the proper step for adjustment of valve clearance.
My engines instructor at dmacc told my class 15 to young 36 to old 24 just right made us laugh and I have not forgot that since
Adam Still wow, haven't heard that in awhile, I guy named Bill Nack taught me that at wyo tech about 20 years ago
Adam Still same way i remembered too
did you read my comment on the 68fre dodge transmission about overdrive underdrive clutch hub from sonnax great company to buy performace transmission parts from
+Adam Still I did, I actually did the last 2 with bd performance kits with the double disc converter, they too use double sided frictions, and upgraded pressure plates and a inline module that increases line pressure called protect 68. I was really happy with those. I have used sonnax parts on 4l60e transmissions alot and was happy with them as well.
I found that Sonnax was cheaper the one they have bolts together I thought was way better but opinions are like assholes everyone has one lol
I’ve got a NHC250. I cannot find any info on adjusting the valves
Hey where do you find A-B-C. Mine only showing 1-6. 5-2. 4-3 ?? Could you help.
Will this work on the big cam 3? Big cam 400
Quick question the #7 thrust bearing for the crankshaft is there a tool or technique to remove the cap on a 855 big cam 3
Never mind got it, on LPF liners what is the liner protrusion specs and for an nt 855 and do you use RTV counterbore?
Hey man so I’m running the over head on a 365 stc big cam and I was wondering if not having the engine in TDC before disassembly would have any effect in the reassembling and adjusting process ?
Makes no difference, after reassembly you have to set the overhead, Cheers
I have an early 70's NHRS Cummins (supercharged) operating a fire pump. I have been told that it is reverse rotation. #1 how do I determine. Looking at the front of the engine the crank balancer turns clock wise. #2 what kind of overhead setting do I use inner or outer base method? #3 what are the injectors settings (torque) and valve clearance, cap torque?
If it's turning clockwise looking at the front then it's not reverse rotation.
great video! is this the method for big cam NTC 350?
+Josh Gibson Yes you can set it up that way or you can run your valves and Injector s on the same cylinder and set the Injectors to 72 inch pounds
I'm confused, data plate says zero lash on injectors and nothing for injector torque? I just had the overhead adjustment done, and now it smokes like crazy. way worse then before and I think fuel is mixing into oil.... he didn't do something right and of course I can't get the guy to return my calls. so I am wanting to do it myself
+Josh Gibson First of all what engine do you have?
Josh Gibson Start out on accessory drive mark A, valves will be loose on 1 or 6 , on the cylinder with valves loose adjust injectors to 72 inch pounds, make sure you adjust Injector first before valves, and then on same cylinder adjust intake to 11 and exhaust to 23 that's what your data plate should say. Go in firing order, 1,5,3,6,2,4.
it's the 855 big cam NTC 350
plate says 11 and 24 on valves and zero lash on injectors. injector torque is blank
i need you in Oklahoma, you are awesome
Thanks so much for the video.
+Tan Nguyen No problem, thanks for watching.
Would this also be the same for a BC4 350 Cummins?
How can adjust my cummins v504injector and valve thank you
Hi for top stop injector how much will be the torque if we use the OBC thanks in advance
Is this a NTC 365 IV?
Do you have the valve adjustment specs for a 365?
Will this work for 82 year engine big cam Cummins 855
So I have a 444 cummins and it says right on cpl tag .011 INT and .023 Exhaust. So I guess I would use the IBC method? You said on your 444 you use the OBC method. .014 INT and .027 Exhaust. It also says on my tag T.S. Zero Lash. This is for a 444 STC engine CPL# 1280. So I am very confused here.
Sir can help me?engine ntc 400 engine with stc injector,can adjust valve n injector in 1 cylinder? Or top number 1 and i adjust injector number 4 90 inch pound??
How would it differ for a Nhc 250
I’ve got an older n14 and I keep bending and breaking injector push tubes. Twice on number 4 now on number 1 cam and rollers look fine I’ve herd that if the Jake’s are sticking it might cause this. Any help would be appreciated
Biggest reason for bent push tubes is the engine is probably set wrong, set it at the outer base circle which means when on A the cyl set should be 1 or 6, whichever has both valves closed. Intake clearance should be 14 thou, exhaust 27 thou and injector 125 inch pound on mechanical engine or on electronic N 14 bottom out injector and back off 2 flats of adjusting nut. Other possibility is that the accessory drive has been removed and not timed to the camshaft when reinstalled.
Hi there, does this also apply to the NH220? - Just about to do this on my D65E-6 dozer
The setting would be outer base circle, when on A or 1 - 6 B 2 - 5 C 3 - 4 you set injector at 72 inch pound the intake valve at 14 thou, and the exhaust valve at 27 thou. This should be done when engine Is hot firing order is 1 5 3 6 2 4 the cylinder to set is the one with the valves shut colder I usually set at 60 inch pound and intake 13 and exhaust 25. then after warming up reset the the valves and injectors.
I had my old versatile 800 n855c250 running great finished seeding Friday when the vent started smoking wild blow by. I finished went to move it 2 miles next day it started and ran great and half way home the coolant filled the crank case as pressured up as the block was would you guess head bolt or gasket ?
jeff amoth I would guess head gasket, pull the turbo and exhaust manifold and maybe you can see a wet valve port, or sometimes I take a pressure tester and pump up the coolant system and can hear it.
thanks no turbo that helps some runs great but white oil! thanks again
+jeff amoth I have seen head bolts do that also, could be either one . You could pop your valve covers and just grab the head bolts and yank on them with a pair of pliers and see if one comes out. Oh yeah no turbo n855c, don't see many natural aspirated ones. Thanks for your comment and for watching.
I tried pressuring the system, it drained down in about 15 minutes couldn't hear for sure what head was leaking or were it was leaking. I pulled the middle head after finding no broken head bolts because there seemed to be moister on outside of head on the block.I deiced to pull all 3 after not finding any definite failed spot on any of the gasket's.I didn't have a dial indicator so I slid a .007 feeler around the edges of the sleeve every thing was below it and looks flat will check it later. the tractor is 116 miles from the nearest Cummings dealer in the US hard to have some on just swing by to take a look.I was told its hard to see the failure of the gasketts some times? on all the old cases I have worked on I could see the problem.
jeff amoth I wonder if an Injector copper cracked, any pistons have any white crusty looking crap on them? Run each piston down to bottom dead center and see if you have a cracked liner. Look at heads real close and make sure you don't see a crack between a water port and where the fire ring is. Sometimes problems like that can be hard to find, look at Injector coppers real close too.
Can i ask the firing order and valve clearance
I got 855 big cam adjusted it runs but doesn't sound like it should what am i doing wrong
Jake/exhaust bridges on the intake side?
This one had no Jake heads, not sure what you are getting at?
grease monkey101 the bridges on the intake side are for Jakes. someone probably put them in at some point in that engines life. plus I wasn't paying attention at first to see that engine doesn't have Jakes anyway. no worries, just figured I'd point that out
MattB. Yeah I just put them back where they were, and wasn't worried about it because there were no Jake's, thanks for watching and thanks for commenting.
grease monkey101 anytime sir
i have a motor cummins ( bulldozer shantui sd32) NTA855-C360S10.can you help me for adjustice valve and injector
Yes sir I have an old versatile 895 with the 855 big cam with around 13000 hours was getting oil in the water 100 hours ago replaced the cooler and now in getting water in the oil seem to run fine until today and was running hot that's when I noticed them water vapor coming from the blowby what's the odd of a bad oil cooler or cooler seals?
Maynard 59 I would think you have a separate issue, sounds like a head gasket, oil cooler typically blow the back in the coolant because the pressures are higher.
grease monkey101 kinda what I suspect it seemed to have a lot of pressure in the cooling system although it was around 220 degrees n blowing steam didn't want to pull the cap off any tricks to picking the right head the first time
You probably have a cavitated liner
dale evans
That's what I was worried about i had replaced the oil cooler and I guess I didn't get the O rings in far enough some of them older engines will pressure up to 75 - 80 lbs of oil pressure and I guess push them out and made a big mess then when I shut I off the water pressure forced water in the oil anyway got an new O ring kit and did it all over and seams to be working fine
Where are you located?
Bro i have the sane motor 290 and i have no idea how to adjust them can you plz help
How many size settell injector
Can you Plz explain Cummins Qsk 78 G9 over head setting
Dear thank you so much
Going to wield metric bolt on top of cylinder head bolt my trick works lol🏁
Thanks for the useful video.
Can you help me with a KTA- 50 cummins.
You probably mean a KTA-500.
I help you in kta50_G3 G9 what you need
Injector timing torque specs how nm
How to. Marking pulley.ABC....please correction my explain.... Turn pulley cylinder 1 top position thats mean the mariking put writen A? and turn pulley to cylinder 5 to top position thats mean is a marking B and turn pulley to cylinder no 3 to top pisitiom also thats mean marking is C? Is correct? Please sir help me to more to know that
Good evening, how about for NRTO-6
Hay quá bạn ơi
thank you for this information, excuse me but I need this book and I ask you its title please and the download link
Firring order 153624.in cover inside have writening... I want asking whats mean RH 153624 and LH 4........please sir... I need to know....
Hello, kindly send details Cummins N8G2 engine calibration chart or injector
toque
All this did was higher the confusion. Let’s stick to one scenario at a time.
Valve lash injector on a 400 bc cummins
Help me how to set injector of Cummins VT-1710-CG. Please give me the link for document. Thank so much
hello could you help me with procedure to calibrate an small cam 250?
jose rubio Start out on accessory drive mark A and check valves to see if valves are loose on #1 or # 6 . So if valves are loose on #1 then adjust Injector on same cylinder you are adjusting valves which would be #1. Adjust Injector to 72 inch pounds , and then set valves to intake .011 thousandths and exhaust to 23 thousandths. Go to accessory drive mark B and you will be on #2 or #5 , if you did cylinder #1 then cylinder #5 will be next. Firing order is 1, 5 ,3,6,2,4 .So the next mark will be C and You'll be on cylinder #3. Then go back to A to do the other cylinders.
how do i identify my engine. i think its an L10 but i cant find the tag
Andrew J should be on the top left corner right by the accessory drive pulley
ok. Am I looking for a riveted tag or is it stamped in the cast? Im cleaning thendirt off of it now. The engine isnt the original engine in the truck so the vin is no help
Andrew J It's riveted
ok. My 5.9 cummins is like that. This engine doesnt have the tag on it. I know I have the right injectors because we got a part number off of the old injectors. (Top stop injectors) the engine has what looks to be millitary paint on it. single long valve cover with a slanted valve box riser. Just trying to make sure i have the right valve specs. We didnt loosen any of the valves when we pulled injectors just slipped the injectors out after moving the injector rockers
I do have a casting number or something on the top of the block towards the rear drivers side
have you ever had to time one of this motors
Will Smithey yeah, using cam followers boxes with different thickness of gaskets and the special tool, they are a pain.
Berapa ukuran kekencangan baut cylinder head Cummins 350 kba
hola muy buena la enseñanza de la calibración de balbulas y inyectores me gustaría saber l orden de calibrado de inyectores y balbulas del bican y esmolcan Muchas gracias
Reynaldo Hernandez Reynaldo Gracias por ver.
Also injector setting plz it's a request
so how to you tell the difference between a 290 Cummins and a 350 Cummins
+Marc Robinson Well they are pretty similar, usually I just look at the data plate on the accessory drive cover, it will say ntc 350 or or nta 290 . I Know the 400's had larger crank dampners than the 290's, but I don't remember if the 350's we're the same as the 400 or 290.I guess I have never run across a 290 or 350 with the data plate missing. I am sure there is an old Cummins mechanic somewhere that could rattle off all the variations, but I usually just go off the plate.
grease monkey101 ....its very easy...Cummin 290 n 350 also big cam...but..290 doesn't use upper cooler..350 use it...n one another thing the timing cam for 290 n 350 also not the same...
Marc Robinson ...the 400 front balancer is bigger than 290 n 350...
Great
we just replaced number 1 and 2 injector on big cam 4 855 engine with stc injectors and replaced gaskets on number 3and 4 cylinder rotate engine and get a clicking noise on both heads we adjusted the motor using outer base circle we adjusted number 1 cylinder to 90 inch pound and then the valves then finished adjusting the other 3 clyinders now we get a clicking noise when we rotate the motor using the starter and a jumper clicking noise is worse when we start building up oil pressure any help would be appreciated thanks
+Dons Gee What gaskets? Head gaskets, rocker box gaskets. Make sure the rocker box hold down bolts are tight, it sounds like you have a valve loose, was it ticking before you changed injectors? What are valve lash settings on your engine? 14 and 27 or 11 and 23?
we replaced rocker and jake gaskets set valves to 14 and 27 and injector to 90 inch pounds we change injector cylinder two was white smoke my friend wanted to change both injectors so we would not have to touch that head again for a while but after getting injector we noticed the bottom oring was hard and flat on old injector i put my hands on the rocker for the injector and the injector feels like it is clicking we tightened the rocker hold down bolt to 60 foot pounds don know what we did to get a clicking noise have done the out base circle a coulpe of times never had a problem with clicking noise untill now i think the injector clicking noise is when the injector is coming back up
disculpa qe motor es ??
Javier Herandez Big cam 290 Cummins
grease monkey101 gracias saludos
Is the same for a ism or m11 in-line 6 too
The firing order is the same , but the injector and valve lash settings are different.