KDP Question
 

How do I know if my rig has the dowel pin? I took it to a local shop and the mechanic said my rig has one. Can I check through the VIN #?

All the trucks have the pin but some come with an updated cover that will not allow the pin to back out. Without removing the cover there is no way to tell if you have the updated cover or not. Not a hard job, just another pain in the bottomside.

They all have dowel pins. The difference is that in the later years, the case is updated and modified so that the dowel pin cant work its way out and case major damage.

Being that your truck is a 99 - chances are pretty good that you have the old case and therefore you have to pull the timing cover off and tab the pin.



Youll need a tab, a longer bolt, some red Loctite (#262), a new crank seal and either a timing cover gasket or some RTV. These guys sell a good kit: http://www.tstproducts.com/index.asp...ROD&ProdID=189 Im sure one or all our sponsors carry the same type of kit.

There is a how-to guide here: http://www.tstproducts.com/DowelPina.pdf and here: http://dodgeram.org/tech/dsl/Dowel_Pin/tab.htm

As well as some pointers here:
http://www.dieselpowermag.com/tech/d...kdp/index.html
http://www.hotroddiesel.ca/killer_dowel_pin.htm
http://www.dieselpowermag.com/tech/d.../photo_03.html
http://www.pdrdiesel.com/TechKDP.htm

Gotta love this site. Had a question and got an answer in less than an hour. Thanks guys.

No problem...if u have any other questions - ask away.

BTW, you dont need the 36 mm wrenches for the nut, a brass punch and hammer will get the fan off as well.

here is more tech as well..............

https://www.dieselbombers.com/showth...ller+Dowel+Pin

I just recently did mine, you can check this out for my findings. https://www.dieselbombers.com/showth...highlight=case

Or in this case I removed the fan and bearing hub in one unit to save the hassle, I pulled the radiator to steam clean it. (but I did pull the fan first, saw the rad. and figured I better do it and the blowby tube mod at the same time.:U:)

I have seen an '02 with the old style case. Better check 'em all!

Dave

If you do some research, you'll find it's more than just the case. Yes, the old case allows the pin to travel outwards, since there is no shoulder, but in the 12 valve engines the weight and vibration of the injection pump is what also contributes to the KDP. You don't have that problem with the VP.

One last thing; I dare anyone to take a casing from a 12 valve truck and use it on a 24 valve truck with a VP, it just will not work. Therefore, the casings are different between the two applications ... for what it's worth, since I know I'm starting an argument ... right doctor?

OOOHHHH NO, It's andrew. As I live and breath. I don't know about the 12V cover not fittin the 24V but I did finally after all the years of talkin about it pulled my cover a few months ago. On my 99 it was not the improved version that holds the dowell in. I got lucky I suppose. 200,000 miles and the pin had not budged at all from where it started.

I removed the fan hub and radiator on mine as well. It made work easier.

No arguement here.

How do you explain people finding their dowel pins have moved on their 24Vs?

Here's an '02 that had the KDP take out the case. This is not a second hand account. This is my dad's truck.

There was a hole punched in the usual place and the pin was mangled.

Attachment 59124

Dave

Youre scaring me Dave - My 98 is done but I havent looked at my 01

Lucky that was a warranty repair...

I just hate for someone to not to check it out based on the assumption that they have the upgraded case. From the little I can tell, you can't tell from VIN, build date, factory or event he external case.

Mine was the upgraded model. My dad's was not. I bought my truck from the same lot he did and his build date was later than mike. Also, the same factory produced both trucks.

For the cost of a seal, a tube of RTV or Permatex and a tab, it's cheap insurance for anyone to check it out IMO.

Most likely, most guys will never have an issue. That's just not how my luck goes!

Dave

Darn it, Doctor, you got me again! :igive:

I must turn my attention to the year of the truck. This is a first and you'll have to agree with me on that. Not to mention, this is the first valid piece of evidence I've seen that a post '98 (12 vavle) truck has had a problem.

In my earlier post, I was laying out, exactly, the explanation given by Cummins ... which makes perfect sense.

So now we are saying ALL 2nd gen trucks have the KDP problem ... that's scary!

I would say no, but assume that they do. Until that cover is pulled, no one would really know.

Dave

I am really close to pulling everything on mine that is needed to do the KDP tab, even though my truck has 278k miles and counting (263k when i bought it). I am just paranoid, even if I pull things and it is tabbed already, will make me sleep better at night!!!

Mines a 99 and when Wannadiesel was here at the Cave he told me i don't have one. He killed 3 that day. I think it his total is number 68 kills.

All the first and secnd Gen trucks have the pins, it's just that some have the updated cover that prevents them from coming out. But I can tell you that my 99 did not have the updated cover when I pulled it apart.

You had me believing you for a few minutes. The explanation provided by Cummins seems to be very logical but Dave opened a can of worms with his recent post. And yeah, its pretty scary.

I just pulled the cover off my 99 and the tab will not work because the dowel pin is raised from the bolt. Does that mean I have an updated cover and nothing to worry about? The 99 has had many owners and abuse. It looks like the cover was pulled before because the bolts are all different sizes. the bolt next to the dowel pin along with the others are a torx head. Any one else have these kind of bolts or did they just use whatever was lying around when they put it back together?

Yes my 01 has the torx head bolts it is the updated cover.No worries

so lets get this right, if it has torx heads, its an updated cover?

Thanks!!! This is great news. I still feel like I stole this truck. I'm doing a lot of work to it, but it runs well.

ya im kinda gettin a lil worried as well my 99 has 234km on it without a single problem