This might sound stupid, (lord knows it won't be the 1st time)
but what is a KDP? It sounds like something I don't want to break. And this is the first time I heard about such a thing.
I pretty familar with gas engines, but I'm at a loss/
thanks
P.S I read through some of the post's and gathered it has to do with timing.

 

The KDP has nothing to do with timing. It is a locating dowel pin to locate the front case to the engine block. THis pin has a tendency to fall out and can cause major damage to the front case. Hench the name Killer Dowel Pin or KDP<br><br>Hope that helps .. if you want to know more about it send me a PM ... I've fixed well over 40 of them ...

 

Its a alignment dowel thats press fit into the block so when the front gear housing is installed it keeps the alignment of the housing until the bolts are put in and torqued...the problem is durning 94-98 either the dowels where not sized correct or the press fit wasnt tight enuff and this dowel would work loose...when this happen the dowel will fall out onto the timing gear and either get ground up by the gears causing damage ...or the speed of the gear sends this dowel thru the rear gear housing causing it to crack open...if that happen then its a major repair bill to replace the rear gear housing $2000-3000<br>The other way to repair this dowel is to remove the front gear cover and be sure the dowel is seated in place and make a tab that uses a near by bolt to cover the dowel which will keep it from falling out this repair takes longer and costs more then the KDP Jig Kit repair<br>Here a link to using the KDP kit to stop this dowel (Killer Dowel Pin)<br><br>http://www.phantomcycle.com/kdpfix.html

 

KDP tabs are availible from Piers Diesel Reaserch if you don't want to wait for a jig to come around.

 

WHat is involved in installing the Piers Tab? I hunted around their website but could find any on-line instructions. Anybody used that kit?<br><br>John<br><br>

 

http://members.aol.com/_ht_a/hrrs994/kdp/<br><br>This should help

 

Thanks.<br><br>

 

[quote author=pappyman link=board=16;threadid=8400;start=0#81064 date=1040077211]<br>...the problem is durning 94-98 either the dowels where not sized correct or the press fit wasnt tight enuff and this dowel would work loose...[/quote]<br><br>the problem is also found in the first gens too.

 

Thanks for clearing that up for me, is there anyway to tell it's bad or is it something that needs to be done asap?<br>I just turned 90k .

 

[quote author=92RamCTD link=board=16;threadid=8400;start=0#82007 date=1040246790]<br>Thanks for clearing that up for me, is there anyway to tell it's bad or is it something that needs to be done asap?<br>I just turned 90k .<br>[/quote]<br><br>Its unknown when this dowel will fall out...the KDP Jig Kit is the fast ez way to fix it y'all just drill the housing and tap it then install a blocking screw takes about 1 1/2 hrs start to finish....and it is worth the peace of mind knowing that this will not distroy your gear housing or take out your timing gears I repaired 2 trucks last week...my buddies truck we caught in time the dowel was moving out I did some trick moves with a pick and worked it back into place thru the Jig hole and got the locking screw into place :