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More cracked branch tubes

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O4 International chassis.1st time it got towed in dead,STC was blown out.Changed fitting,put the bracket on lasted one week.Towed in second time..Branch tube cracked at fitting block.Whats weird is that when I did the fitting the first time all was well as in The branch tube wasnt heaved or bent upward.I have had them where I have had to put a open end on the block and Bend it down to even begin to come close to being able to bolt the feed fitting to it(International frowns on this)but you have no choice.None of these tks that I Did this too have ever had a issue since.Also the tk I am doing the Branch in, the tips of three of the Five rocker arms You need to take off to do this job In-chassis were shot.The valve bridges looked fine but the rocker tips were pitted to hell and had ledges in them.

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Dont feel alone! Ive done several over the past few weeks. I only had to remove the back to rocker arms on each bank. Why five?? I dont even waste time anymore bending the tube back into place. Just replace it. I hate the early build engines. That design royally sux.

It is alot easier to remove #6 exhaust rocker along with both of 7&8.Reason is so you get a better angle with your extension when going down though the head to get the anchor bolt for the end of the tube.As for me I will take the chance of bending the tube block back so I can get it down enough to get the bolts started into it from the fitting block.International doesnt want to pay to replace it if it isnt leaking.And I also dont want to do the job unless it is cracked and failed LOL!.As far as Early build Engines and the branch Tube design. I havent done any Newer than a 05 and It is the same design as a 03?.STC fitting failures are still happening with 07's.We had a new UPS van Towed in the other day.Only 14 miles on it STC was blown apart.This may have been a assembly problem.But anybody could connect one of these fittings together it isnt rocket science.I think there are still problems with them IMO.
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I have seen them,But all the ones I have done have been 04-05's.I mainly work on CAT.But They have been tossing the Nasty International jobs my way a good bit the last few months.Nobody "Wants" to work on them.I told them tonight.If you throw another one of these on me I'll pull the engine out to do it.This latest one was the worst so far.It took half a day to get the valvecovers Turbo,ECM,and the rest of the stuff off the Shitheap because of all the extra wiring and other crap.It is one of those mobile parking lot sweepers with the Dual steering wheels and controls.It is hard to believe what it looks like under the hood

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Quote:
This latest one was the worst so far.It took half a day to get the valvecovers Turbo,ECM,and the rest of the stuff off the Shitheap because of all the extra wiring and other crap.
Hey! Be easy now... that heap of "shit" is my bread and butter! /forums/images/%%GRAEMLIN_URL%%/puke.gif
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Quote:
This latest one was the worst so far.It took half a day to get the valvecovers Turbo,ECM,and the rest of the stuff off the Shitheap because of all the extra wiring and other crap.
Hey! Be easy now... that heap of "shit" is my bread and butter! /forums/images/%%GRAEMLIN_URL%%/puke.gif

Well Keith They are Job security for sure LOL.I was more referring to the Tk chassis and the configuration itself and Not necessarily the Powerplant.I own one myself and have seen the issues long before I traded a perfectly good 7.3 .These medium duty tks are worked a good bit harder than most pick-ups are and The VT-365 seems to show its weak points when it is loaded to the max and worked hard day in day out.Mainly this High pressure Oil feed set-up.If you haul heavy loads and Work it hard constantly Odds are You are going to have a issue with the Fitting or the Branch tube sooner or later.
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