fjh

Yup agree 100 percent As a group here if we don't know it and you can't make some sense of what we do know ! There are Guys here that came talk people thru most anything However this trans has quirks! in my opinion ! Take it to a dealer Chances are its out of your skill set and you may cost your self more than tackling it your self! They SHOULD have the where with all to repair it! There Is always a slim chance its illusive!

Book learning is only a small part of it and if you don't have the opportunity to get involved in the actual repair your like me a sidewalk superintendent! The ribbon tape requires you to pull the floor out and the lid off the trans And as Joe mentioned the Guys listed above are the ones you need to listen too! While there you need to be watching for stuff ! There is a stop plate that commonly comes loose/cracks/ breaks ! Need to watch for this !I highly recommend taking it to a reputable dealer for repair! Just sayin

Buddy ya arn't a fortune teller! Crystal balls are in short supply!

Not to many people look! I had been doing comercial inspections for the last 10 years If I spot these on older vehicles I usually ask the customer to let me at least inspect them! slot of older units use these!

Not sure valves dropping had anything to do with it engines with or with out have dropped valves i think they discovered it was a useless item and there were better ways after all most are equipped with intake heater like many other things its on a need to know basis its for them to know and us to find out if we dig deep enough! They aint going to tell ya if they are having a mortality rate on something! that you discover on your own or when they send out a vague service bulletin delete like they have with this or you see with your own eyes with repeat failures ! And like everything else the programing changes from day to day! The bull gear and injector cup feasco is a perfect example ! in the real Mack days The fuel line and cam deboggle of years past they don't like to admit they have problems they like to call them ISSUES! Most of the time things get sorted out The injector cup deal is half better because they got rid of 3 dancing injectors If they had got rid of all 6 and went proper common rail Instead of the dollar store injection they would likley have a none issue! That said everything evolves poor planning on the injector cup front there! From what I have heard Volvo has had issues with cups long before it got involved with Mack even before EGR ! So they compounded the issue when raising injection pressures by letting pluggers remain .,same single wimpy bolt holding down the injector when two likley should have been used just a bunch of over sights! trying to keep costs down! Roll the dice We already have this settup lets do this to it It should work! MAYBE! Again Just an opinion Everyone has their own thoughts on these matters !Thinking out loud! Oh well to much time on my hands just rambling! woulda shoulda! coulda!

bummer

nice! To bad! Double frames are a bit of a Pain that way!

No boost leaks/exhaust leaks it could be a shit turbo or a worn out engine too. But I wouldn’t worry about a few psi. Every engine has different ranges even when they are new. WHAT ony is talking there is where you need to be looking at! FIRST! Eliminate what you can before throwing parts Waste of money otherwise! and yup it could be a bad turbo However! Things to look for are Black smoke under load High pyrometer readings! check for boost leaks check the compressor inlet tube hose real common leak there! just sayin don't jump to conclusion on a turbo!

We BS Alot Here! you know! 😂

They started ripping people off for hp when emissions tightened every year a new regulation a lower hp SEEN IT HAPPEN since the 80' s

me neither

Depending on the year 33 was max spec in 2003 A good running 460 is in the 35 neighborhood 98- 2001 pre that seen em go to 38! That being said Rd had limited cooling it was hard to even get a 460 in an RD at some points in time !

Yup that's why they don't use it anymore more trouble than its worth! I guess!

bingo

Specially in dust! if you have an under the hood air cleaner you need to monitor this every service as well the turbo moves alot of air during a day these clog up quickly! If you got dual outside cleaners its not as bad! 300 hrs is my go to on a dump!

There was a air recycle valve on the turbo intake boot on the earlier trucks I Forget the name of it I 'm sure someone here will remember the name of it! It would go into periodic heat mode and would raise the rpm sometimes at stop lights on cold days for what seemed like no reason ! this may be in the mix here to Duno being a deleted unit its anyones guess! In my opinion if performance is not suffering just live with it! Just something to try!

I would try it anyway you don’t know what the rograming does! Or except your situation!

I have a suggestion ! take part and clean the EGR DPF ports and tubes make sure all is clear! that surging you hear may be the EGR valve tryng to find its sweet spot and restricted tubes can make it slow to respond! Just something to try!

Very common on RD SX and most RD of that vintage! took a lot of stress off the hood in adverse conditions!

Could be worse ! We could have Putin! He is stupid enough to send up a nuke! Maybe him and rocket boy will team up! Both are equally un hinged !

As stated ! Shift rail! pricey to impossible fix parts are scarce! PAI MABE! Fuller time!

I'm going to have to pay more attention to the dates of the posts I guess! I'd like to know how these old posts keep getting recycled! It had zero replies when I looked at it first! just getting old and senile I guess!😐

Guys ! 12 speed!!!! (1070)? You likely have a broken shift rail ! The trans ! The other thing that commonly happens is the snap ring in the split cylinder breaks ! Lift the lid off and look down inside there is a tapered shift rail it is likely broken! Just saying!

That there is pretty bad splitting of the hairs hairs! long as a slack is holding its set there should not be an issue!

I am not a huge gunite fan how ever they do work well when they work!