Have a question for you if you are reading this, would you prefer a weekly Livestream for 30-60 minutes to answer questions or do you prefer this style video? I'm thinking of doing a Livestream to answer people's questions every week, I would like to hear your thoughts?
I would like the livestream, also, I have an old engine in which I don't know the condition, regarding bearings and camshaft, is there a way to know the health of the engine without taking it apart?
I think you should try doing a live stream once in a while to see if you like doing them before changing to much, you may not like them or you may like it a lot more. I pretty much learn something from most of your videos, so I am kind of a long for the ride how ever you do it.
Live streams are a train wreck. It's the tards that feel empowered enough to talk over everybody. Then you spend four hours trying to figure out WTF they want... which is usually attention.
I follow a couple of good automotive and fabrication channels, when ever I get a notification for a new video first thing I do is hit the thumbs up. It’s the respectful thing to do. Regardless if I love the video or content etc
@@AdeptApe 🙏🏻🙌🏻👨🏻🔧 thankful for your channel! SOOOO much knowledge you're willing to make videos on & share! 98% of the time helps getting out of a jam!
*Silly Halloween Jake Brake-related story for you all.* I drive an older 97 KEnworth T-800 with a Cummins N14 in it the main muffler is pretty well falling apart inside so it rattles something fierce when Jake Braking hard. Last Halloween I was coming home and had to roll through a nearby small town that has a steep hill on one side with a river at the bottom and the town noise ordinance does not go into play until the bridge is crossed. This means that by common old farm boy truck driver courtesy I have to roll down that hill over revved with the Jake Brakes popping like I am the devil himself coming to town right up to the last foot of that bridge where the city limits start, as does everyone else around here. (It's a local tradition thing all the Karens in town just love us for..) Like most guys who no longer have a wife or kids at home, I have no clue when the holidays land anymore So I come rolling in just after dark. First block into town I see a flock of kids in costumes just pumping their little arms up and down as hard as they can to get me to honk at them. Well, my truck used to be an oilfield truck and it came with every bell and whistle that could be put on it. Most don't work but the two high-powered air horns on the roof go to beat all, so I gave the kids the customary Berp Berp. (Paying it forward for all the times I did that to truckers as a kid.) 😋 Well, between the Jake Brake introduction and Berp Berping the kids on the first block, I had everyone's attention in town, and at least 2 miles out of town as well because it was dead calm for once that evening, which meant that every single kid for the 10 or so blocks of the main road through town had to get Berp Berped too. (Not the in-town attention I wanted actually.) In the end, I and half the kids in town were grinning from ear to ear and the local Karen population was given something new to complain about to the local sheriff's department for a few weeks. It was a good night for everyone! 😁
Jacobs had a problem (PS4602) of the spring coming out. So a recall was issued and you took the one washer out and replaced it with a dual washer design. Thus the spring would not come out of the housing. The camshaft as you well know, the scratches is back sliding. As when the roller comes over the top of the lobe, the roller can stop turning. Carbon in the oil aggravates this as it gets wedged internally around the roller and the pin. Camshaft is not hurt, I just polish the scratches off. The chunk missing looks like case crushing and in the high load area of the camshaft, it warrants replacement. On the 5EK's they had bad cam's and I asked a Cat engineer about Jacob's Brake loading up the EUI lobe. He assured me that the added force of the Jacobs Brake was nowhere close to the PSI that the EUI was applying, that was needed for injection.
Hello Josh: By performing visual failure analysis on the camshaft the lobe damage is cylindrical with extensive galling. There has to be more lobe & lifter damage inside the engine & not just located in that one area. If a metal piece from either the rocker arm etc came in contact with the resolving camshaft the impact would just be in 1 confined area but more lobes exhibit rotational galling. In other words a complete overhead overhaul, camshaft & roller lifter replacement. I would also pull the pan for metal contamination. Take care, TMP from N.J.
That damage is called spalling. It can happen from micro rust pits on the hardened surface or bouncing of the roller on the hardened surface. Basiclly two hardened surfaces getting beat together from "possibly" too much lash or out of adjustment. Then micro particles of hardened metal that are broken off because it is very hard and brittle surface, are dragged under the roller as it goes around causing what you called scratches. Loose rocker/cam follower could be the problem. Rusty cam core when installed will continue to degrade, even bathed in oil, is possible but unlikely. I have seen it many times in the gas engine world and airplane reciprocating engine world.
If I recall years ago on a 3406B , after removing the back brakes, make sure that you don’t lose the washers on the studs, and if so, it could cause a problem with the cam even if he did a valve set, of course, stress on the cam assembly.
The cams on my C15 were in perfect condition at 1.4 million miles, no scratches at all , I would have thought, contaminated oil or over heating would cause this , or it might just be a manufacturing defect on the cam and wasn't hardened properly when it was made, if all the other lobes were ok .
We had a jake destroy a bunch of stuff. Driver drove with the jake on full blast all the time and defeated the clutch and throttle switch. I blame the driver more than the system as they chose to operate the truck abusively.
I ran a 1996 3406E 5ek if i recall right . when factory built cat had a bad batch of cams. their was a bulletin on it if i remember. it was certain serial number builds. just shedding a little info i remember on the early E model cats
Back in the early 70’s till Cummins brought out the “ big cam “ small cam Cummins displayed this problem. Most engines back east didn’t run Jakes. It was a metallurgical problem caused by overloading the cam due to trying to flow too much fuel through the injectors. The cam roller would also show signs of breakdown, what started to fail first ? Don’t know. Once the big cam came out, it had larger loading ( contact area ) and the problem went away. I had over 3 million miles on my 82 Big Cam 2. Everything else was replaced except the cam, and the crank, but the important thing is the cam survived. ( Shell Rotella 15/40 ) years later Cummins used a treatment of the cams in large mine and marine engines the referred to as “ grummeling “ on the cam lobes. It had the appearance that the cam wasn’t polished. The theory was the rough looking surface would hold the lube oil in place to coat the lobe and roller as a cushion. Was it effective ? Don’t know that either.
Looking at the picture of the email, there is no question asked really. Not sure on diesel but I was told decades ago scratches and pits on a cam or crank is probably from over revving the engine. At least that is wat I remember. Would the cam roller get dirty and stop rolling causing scratches? Stay safe and healthy Josh. Stay warm if you are still biking to work I think you have cold weather coming.
When you mentioned those Jacobs parts or Paccar engine brake parts that are "nearly impossible to find" anymore: what semi trucks have the Jake brakes that have very hard to find parts? For instance what years of Peterbilt 379s have Jakes that are super hard to find parts for now? Say, before the year 2000? After 2000?
Question for Josh. Do you ever use a Loupe or Digital microscopes to look at damage or failures in components? It can give you some more information when dealing with possible Root cause.
i'll start my comment by saying i'm a welder, not a mechanic. a guy asked me to weld a cam lobe that had a groove worn in it. the groove was nearly the width of the lobe and about 1/4" to 5/16" beep. i just made a couple quick passes with a mig welder to fill the groove. he made a cardboard profile of a lobe and used that to check, as he ground and smoothed the welded lobe. that's my story for what its worth.
From past experience.... What is the oil change interval? I had one that looked similar to that one. I was pushing 21 K oil changes. Guess what 21 to toooooooooo far for cat filters period. hat is what I see. cat on the 15 0r was it the 215 down by San Bernadino, Ca. did my cam. Was in for a #1 sensor 2010 Pete, Ard head done in worthless Kingman, Az. when #1 was done Super Tech showed me 1,2,3,5,6 was doing 115-120 % output to a 19% #4. Need a cam. 2015, $8000 with 3 year warranty. except for ard head every 6 months, I miss that truck. also showed me o-rings on vva was a problem why they kept quitting.
It's stupid as hell! I always left my jake switch on, on my c-15 mxs cat but never allowed the jake to come on when shifting. I believe it can be adjusted in the ecm. By the way there's nothing that sounds good about letting a jake pop every time someone shifts gears
I'm not a trucker, but I noticed that some of them shift with the jakes on and I was curious why. I don't see why it would be bad other than causing the RPM to drop faster, which I imagine wouldn't be desirable with double clutching a close ratio unsynchronized transmission. But that's just a guess based on how tricky it can be to smoothly shift manual transmission cars that immediately drop to idle the second the clutch is pushed.
Have any videos been done on guys burping the jake when shifting without the clutch? Have heard it is hard on timing gears because of backlash. I personally don't do it and we tend to chuckle at the "Billy Big Riggers" that do around here. Great videos
Your “Billy Big Riggers” are accelerating and shifting up while the Jake switch is on. That would be a sign of a forgetful person, or….a dumbass. Driveline parts wear and splatter because of the inattention.
@@nspro931 No. ECM tied to the transmission control module work together. The larger truck wanna be school bus driver hangs on the wheel and pushes the fly by wire throttle. Other control units in a Fuller transmission system to make it sound that way. If the transmission countershaft brake is doing its job while the truck accelerates, and the clutch control is on the same page, and the XY shifter is too, all is well. Any of these, or all of these failed will prevent the driver from making the truck rev with electronic throttle pedal movement, or let the truck move out its footprint. Hundreds or thousands of dollars, plus diagnostic, and maybe relearn for the truck system. Done it for a customer.
Hey Josh, I drive a Kenworth T800 dump truck with a 3406E when running the Jakes on the high they don't seem to slow down much at all. When going from stage 2 to 3 it doesnt make much difference. It sounds like it is only working on 5 of the 6. Are 3406e Jakes just not like the newer cats or may there be a problem.
3406E’s use 2 cylinders on low, 4 on medium, and 6 on high. There’s 1 solenoid for every two cylinders. Sounds like something is going on with 1 set of jakes. Wiring, solenoid, Jake adjustment, or oils pressure supply to the Jake house itself.
This is weird. I just had this problem. I had a rocker arm break. Fixed the rocker arm and immediately broke the same rocker arm and took out the cam. Put in a New cam and rocker , but took the Jake off and it works fine now. Only thing I can think of is the Jake went bad.
Hey Josh, I just had shoulder surgery. I just had some carpal tunnel surgery two shots in my knees last Friday I’m in total pain and by reading that thing that you just said what that guy is asking is, can you fix this piece of shit I can’t stop laughing.
Josh, I don't like live streams, never as good of quilty as a video. I noticed both sides of the cam from your picture were worn. Looks to me a lack of lubrication. I think they ran the engine low on oil and very pea pour maintenance. Just my thoughts.
Jeez, tough call. Not enough information supplied. As Josh mentioned, what was the condition of the rest of the camshaft lobes, but that is an odd failure which I have never seen. Knowing if the master piston, master piston push rod, and retaining ring were still in the housing would be good. Washer failure and one missing? Something fishy there. Those washers are not subject to much loading, as they serve mainly as a stop for the spring.
Went on student trip with a company on a C 15 and I was the student driver few years back and we were going down a steep mountain pass at 105 thousand pounds. The main driver was driving and I Iooked over and the tach was at 26 or 27 hundred rpms with the Jake on I told him he shouldn't do that and he told.me.a was a new generation computer controlled truck and did everything for you and not to worry Asked him how long he drove it that way and he said over six months I thought maybe the Jake's were set loose enough to where it didn't blow up. To my memory earley Jake settings on 3406 E started at 27 thousands and then we're revised to 30. Thousands to prevent problems. I would set them at 27 if the owner knew to be careful and not go over 2100 rpm Preferably not over 1800 rpm.
Bro if you wanna talk about impossible to find Jake's let's talk 6v53 Detroit Jake's, idk what rock I'd have to kick over to get some but fuuuuuuuuuuuuuuuuuuuuuuuck
Have a question for you if you are reading this, would you prefer a weekly Livestream for 30-60 minutes to answer questions or do you prefer this style video? I'm thinking of doing a Livestream to answer people's questions every week, I would like to hear your thoughts?
I'd enjoy the live stream questions, even if you just did them when you could. No editing, maybe more mentally taxing though 😁.
I think a live stream would be nice for real-time viewer input but I don't mind normal videos at all.
I would like the livestream, also, I have an old engine in which I don't know the condition, regarding bearings and camshaft, is there a way to know the health of the engine without taking it apart?
I think you should try doing a live stream once in a while to see if you like doing them before changing to much, you may not like them or you may like it a lot more. I pretty much learn something from most of your videos, so I am kind of a long for the ride how ever you do it.
Live streams are a train wreck. It's the tards that feel empowered enough to talk over everybody. Then you spend four hours trying to figure out WTF they want... which is usually attention.
I'm a simple man. I see a new Adept Ape video and I hit that like button!!
The hero we need.
I follow a couple of good automotive and fabrication channels, when ever I get a notification for a new video first thing I do is hit the thumbs up. It’s the respectful thing to do. Regardless if I love the video or content etc
@@AdeptApe 🙏🏻🙌🏻👨🏻🔧 thankful for your channel! SOOOO much knowledge you're willing to make videos on & share!
98% of the time helps getting out of a jam!
Automatic smash
*Silly Halloween Jake Brake-related story for you all.*
I drive an older 97 KEnworth T-800 with a Cummins N14 in it the main muffler is pretty well falling apart inside so it rattles something fierce when Jake Braking hard.
Last Halloween I was coming home and had to roll through a nearby small town that has a steep hill on one side with a river at the bottom and the town noise ordinance does not go into play until the bridge is crossed.
This means that by common old farm boy truck driver courtesy I have to roll down that hill over revved with the Jake Brakes popping like I am the devil himself coming to town right up to the last foot of that bridge where the city limits start, as does everyone else around here. (It's a local tradition thing all the Karens in town just love us for..)
Like most guys who no longer have a wife or kids at home, I have no clue when the holidays land anymore So I come rolling in just after dark. First block into town I see a flock of kids in costumes just pumping their little arms up and down as hard as they can to get me to honk at them. Well, my truck used to be an oilfield truck and it came with every bell and whistle that could be put on it. Most don't work but the two high-powered air horns on the roof go to beat all, so I gave the kids the customary Berp Berp. (Paying it forward for all the times I did that to truckers as a kid.) 😋
Well, between the Jake Brake introduction and Berp Berping the kids on the first block, I had everyone's attention in town, and at least 2 miles out of town as well because it was dead calm for once that evening, which meant that every single kid for the 10 or so blocks of the main road through town had to get Berp Berped too. (Not the in-town attention I wanted actually.)
In the end, I and half the kids in town were grinning from ear to ear and the local Karen population was given something new to complain about to the local sheriff's department for a few weeks. It was a good night for everyone! 😁
You’re a great human being for that. You made some memories
Jacobs had a problem (PS4602) of the spring coming out. So a recall was issued and you took the one washer out and replaced it with a dual washer design. Thus the spring would not come out of the housing. The camshaft as you well know, the scratches is back sliding. As when the roller comes over the top of the lobe, the roller can stop turning. Carbon in the oil aggravates this as it gets wedged internally around the roller and the pin. Camshaft is not hurt, I just polish the scratches off. The chunk missing looks like case crushing and in the high load area of the camshaft, it warrants replacement. On the 5EK's they had bad cam's and I asked a Cat engineer about Jacob's Brake loading up the EUI lobe. He assured me that the added force of the Jacobs Brake was nowhere close to the PSI that the EUI was applying, that was needed for injection.
Agree 💯
Hello Josh: By performing visual failure analysis on the camshaft the lobe damage is cylindrical with extensive galling. There has to be more lobe & lifter damage inside the engine & not just located in that one area. If a metal piece from either the rocker arm etc came in contact with the resolving camshaft the impact would just be in 1 confined area but more lobes exhibit rotational galling. In other words a complete overhead overhaul, camshaft & roller lifter replacement. I would also pull the pan for metal contamination. Take care, TMP from N.J.
Personally, I prefer watching you troubleshoot and repair things over just listening to you talk with a few pics thrown in.
Damn right. 👌🙂👍
That is what the Sunday videos are for. These mid week videos are just a way to get questions answered.
That damage is called spalling. It can happen from micro rust pits on the hardened surface or bouncing of the roller on the hardened surface. Basiclly two hardened surfaces getting beat together from "possibly" too much lash or out of adjustment. Then micro particles of hardened metal that are broken off because it is very hard and brittle surface, are dragged under the roller as it goes around causing what you called scratches. Loose rocker/cam follower could be the problem. Rusty cam core when installed will continue to degrade, even bathed in oil, is possible but unlikely. I have seen it many times in the gas engine world and airplane reciprocating engine world.
If I recall years ago on a 3406B , after removing the back brakes, make sure that you don’t lose the washers on the studs, and if so, it could cause a problem with the cam even if he did a valve set, of course, stress on the cam assembly.
Thanks again Josh for the video. I look forward to any video that you put out. You are the 🐱 genius. Wish we had more like you.
Prefer this style of video. Kindest regards,Sunshine Coast B.C. 🇨🇦
I've seen this type of cam/roller damage multiple times. Even on engine that didn't have Jake's. All were 3406e and c15 non accerts
The cams on my C15 were in perfect condition at 1.4 million miles, no scratches at all ,
I would have thought, contaminated oil or over heating would cause this , or it might just be a manufacturing defect on the cam and wasn't hardened properly when it was made, if all the other lobes were ok .
Thanks Joah.
Your video's make me want to get back on the tools 👍
Livestream would be fantastic, but I’m sure you’ll get swamped! 😂
Usually find the Jake parts either in the pan or just laying around. Seen that problem quite a few usually cam follower failures.
We had a jake destroy a bunch of stuff. Driver drove with the jake on full blast all the time and defeated the clutch and throttle switch.
I blame the driver more than the system as they chose to operate the truck abusively.
I ran a 1996 3406E 5ek
if i recall right . when factory built cat had a bad batch of cams. their was a bulletin on it if i remember. it was certain serial number builds.
just shedding a little info i remember on the early E model cats
Back in the early 70’s till Cummins brought out the “ big cam “ small cam Cummins displayed this problem. Most engines back east didn’t run Jakes. It was a metallurgical problem caused by overloading the cam due to trying to flow too much fuel through the injectors. The cam
roller would also show signs of breakdown, what started to fail first ? Don’t know. Once the big cam came out, it had larger loading ( contact area )
and the problem went away. I had over 3 million miles on my 82 Big Cam 2. Everything else was replaced except the cam, and the crank, but the
important thing is the cam survived. ( Shell Rotella 15/40 ) years later Cummins used a treatment of the cams in large mine and marine engines
the referred to as “ grummeling “ on the cam lobes. It had the appearance that the cam wasn’t polished. The theory was the rough looking surface
would hold the lube oil in place to coat the lobe and roller as a cushion. Was it effective ? Don’t know that either.
Interesting video 👍
👍
Adept Ape
From Nick Ayivor from London England UK 🇬🇧 ⏰️ 07:59am good Morning 🙏 🌄
Looking at the picture of the email, there is no question asked really. Not sure on diesel but I was told decades ago scratches and pits on a cam or crank is probably from over revving the engine. At least that is wat I remember. Would the cam roller get dirty and stop rolling causing scratches? Stay safe and healthy Josh. Stay warm if you are still biking to work I think you have cold weather coming.
When you mentioned those Jacobs parts or Paccar engine brake parts that are "nearly impossible to find" anymore: what semi trucks have the Jake brakes that have very hard to find parts? For instance what years of Peterbilt 379s have Jakes that are super hard to find parts for now? Say, before the year 2000? After 2000?
Thanks 🙏
Question for Josh. Do you ever use a Loupe or Digital microscopes to look at damage or failures in components?
It can give you some more information when dealing with possible Root cause.
It looks like the surface is delaminating. The roller on the follower would have similar wear. Once it starts, it just keeps eating itself.
Thacks you
I had the same failure on the camshaft this summer after a rocker failed when I hit the jake. (C15 6NZ)
i'll start my comment by saying i'm a welder, not a mechanic. a guy asked me to weld a cam lobe that had a groove worn in it. the groove was nearly the width of the lobe and about 1/4" to 5/16" beep. i just made a couple quick passes with a mig welder to fill the groove. he made a cardboard profile of a lobe and used that to check, as he ground and smoothed the welded lobe. that's my story for what its worth.
This style Josh
QOTW love it
Way over rived down a hill with Jake on , seen it a lot
I have found fealer gauges in cam housings
From past experience.... What is the oil change interval? I had one that looked similar to that one. I was pushing 21 K oil changes. Guess what 21 to toooooooooo far for cat filters period. hat is what I see. cat on the 15 0r was it the 215 down by San Bernadino, Ca. did my cam. Was in for a #1 sensor 2010 Pete, Ard head done in worthless Kingman, Az. when #1 was done Super Tech showed me 1,2,3,5,6 was doing 115-120 % output to a 19% #4. Need a cam. 2015, $8000 with 3 year warranty. except for ard head every 6 months, I miss that truck. also showed me o-rings on vva was a problem why they kept quitting.
You still riding your bicycle to work this time of year ? Your voice sounds back to normal...
Yep, was 14 degrees and going to be about 5 degrees tomorrow morning. Wearing the snow bibs on the bike.
What are your thoughts on all these guys shifting every gear with the Jake?
Lol it slows you way the fuck down tho it sounds great but slows you down
It's stupid as hell! I always left my jake switch on, on my c-15 mxs cat but never allowed the jake to come on when shifting. I believe it can be adjusted in the ecm. By the way there's nothing that sounds good about letting a jake pop every time someone shifts gears
It's got to be hard on the crank. Acceleration and sudden deceleration.
Makes for a very fast gear shift change if you know how to do it
I'm not a trucker, but I noticed that some of them shift with the jakes on and I was curious why. I don't see why it would be bad other than causing the RPM to drop faster, which I imagine wouldn't be desirable with double clutching a close ratio unsynchronized transmission. But that's just a guess based on how tricky it can be to smoothly shift manual transmission cars that immediately drop to idle the second the clutch is pushed.
Porces drop screw up valves . 3406 was hard on breaking rocker arms
Can you explain how a brake saver works and what is the highest psi that's recommended for 200,000 lbs loads
Have any videos been done on guys burping the jake when shifting without the clutch? Have heard it is hard on timing gears because of backlash. I personally don't do it and we tend to chuckle at the "Billy Big Riggers" that do around here. Great videos
I stated in another reply that certain autoshift transmissions use the Jakes automatically when upshifting so it can't be bad.
Your “Billy Big Riggers” are accelerating and shifting up while the Jake switch is on. That would be a sign of a forgetful person, or….a dumbass. Driveline parts wear and splatter because of the inattention.
@@nspro931 No. ECM tied to the transmission control module work together. The larger truck wanna be school bus driver hangs on the wheel and pushes the fly by wire throttle.
Other control units in a Fuller transmission system to make it sound that way. If the transmission countershaft brake is doing its job while the truck accelerates, and the clutch control is on the same page, and the XY shifter is too, all is well. Any of these, or all of these failed will prevent the driver from making the truck rev with electronic throttle pedal movement, or let the truck move out its footprint. Hundreds or thousands of dollars, plus diagnostic, and maybe relearn for the truck system.
Done it for a customer.
"The cam is solid"..
Ford has entered the chat.
Hey Josh, I drive a Kenworth T800 dump truck with a 3406E when running the Jakes on the high they don't seem to slow down much at all. When going from stage 2 to 3 it doesnt make much difference. It sounds like it is only working on 5 of the 6. Are 3406e Jakes just not like the newer cats or may there be a problem.
3406E’s use 2 cylinders on low, 4 on medium, and 6 on high. There’s 1 solenoid for every two cylinders. Sounds like something is going on with 1 set of jakes. Wiring, solenoid, Jake adjustment, or oils pressure supply to the Jake house itself.
This is weird. I just had this problem.
I had a rocker arm break.
Fixed the rocker arm and immediately broke the same rocker arm and took out the cam.
Put in a New cam and rocker , but took the Jake off and it works fine now.
Only thing I can think of is the Jake went bad.
You have a cast rocker arm and a forged rocker arm. If you put a cast arm on the exhaust lobe it will break.
What is with your UA-cam Play plaque, just above the center play symbol you either got damage, or crap on the chrome.
I knew a guy who told me he had 12.7 Detroit do that. He had Jacobs engine brake.
Heh josh where can i get a nice cat hat that your wearing in the video I can’t find one like that ?
How often should I change the oil on a volvo d13 highway use? I've been doing every 25k..
How often should you run the overhead for the jakes on a 1999 6NZ caterpillar.
I’ve only seen that with a bad rocker roller
Hey Josh, I just had shoulder surgery. I just had some carpal tunnel surgery two shots in my knees last Friday I’m in total pain and by reading that thing that you just said what that guy is asking is, can you fix this piece of shit I can’t stop laughing.
I notice that you guys love your "Jakes" but I am somewhat baffled as to why you don't seem to use "Exhaust" brakes as we do in the UK?
Josh, I don't like live streams, never as good of quilty as a video. I noticed both sides of the cam from your picture were worn. Looks to me a lack of lubrication. I think they ran the engine low on oil and very pea pour maintenance. Just my thoughts.
Aggressive up-shifting with jakes on?
Jeez, tough call. Not enough information supplied. As Josh mentioned, what was the condition of the rest of the camshaft lobes, but that is an odd failure which I have never seen. Knowing if the master piston, master piston push rod, and retaining ring were still in the housing would be good. Washer failure and one missing? Something fishy there. Those washers are not subject to much loading, as they serve mainly as a stop for the spring.
That is wear caused by extended oil changes. Your letting too much combustion acid to contaminate the oil. The acid will etch the cam lobes.
Can u make 6nz jakes stronger
Went on student trip with a company on a C 15 and I was the student driver few years back and we were going down a steep mountain pass at 105 thousand pounds. The main driver was driving and I Iooked over and the tach was at 26 or 27 hundred rpms with the Jake on I told him he shouldn't do that and he told.me.a was a new generation computer controlled truck and did everything for you and not to worry Asked him how long he drove it that way and he said over six months I thought maybe the Jake's were set loose enough to where it didn't blow up. To my memory earley Jake settings on 3406 E started at 27 thousands and then we're revised to 30. Thousands to prevent problems. I would set them at 27 if the owner knew to be careful and not go over 2100 rpm Preferably not over 1800 rpm.
2600-2700rpm on 15.0L 4 stroke Diesel saddled to 105K lbs ? WOW. Talk about beating a struggling horse with a baseball bat. What a frigging Sadist.
jake settings on e models and up were dependent on horsepower rating,
@@youtubeisawesome2487 That sounds about right. The first ones out stayed at 435 horse power for quite awhile.
😎👍
He only does oil sampling once a year??? Had he been doing samplings at every oil change he could have caught this earlier.
what happened to purple pete?
Uploading second part as I type this.
I want to see some videos on turning up an old mechanical cat till she blows enough smoke to fog out florida and pull the world around
that looks like rust damage prior to failure? 😂
And drivers Jake so hard they think k yhier cool if they up and down with Jake it's very hard on rocker arms
Dounut Operator does car vids now!?!?!?!
Or the cam delaminated some
Not really a good “question choice” ngl from the lack of info
C series engines just love to chew injector lobes.
Bro if you wanna talk about impossible to find Jake's let's talk 6v53 Detroit Jake's, idk what rock I'd have to kick over to get some but fuuuuuuuuuuuuuuuuuuuuuuuck