Engine/Transmission (1994 - 1998) KDP parts list?

[SRadke]

I'm in the process of repairing KDP damage on a 98. I'll order my parts from Cummins NW tomorrow but I need a relatively complete list of what I'm gunna need and about what it'll cost. My timing gear case is wasted so I'll start the list with that but what else do I need for gaskets, seals, etc. ? TIA



-Scott

 

[csutton7]

until you get it torn apart you won't know what all you will need-you may need some gears as they get munched and other things-gaskets, front cover, the stop to keep the pin from coming out again are musts... -chris

 

[Joe G.]

You should not need a KDP tab because the new gear case is stepped. You will want to make sure you get the right one. See a picture of it here: http://www.flex.net/~triplem/new/dowelpin.htm



You will need at least all the other parts for a KDP fix plus the gasket for the gear case.



Here are the Cummins part numbers:

CM 3918673 $19. 57 Timing Cover Gasket

CM 3804899 $26. 89 Front Crankshaft Oil Seal

CM 3900257 $1. 60 Dowel Pin



I'm sure there are other gaskets needed, but don't know for sure.

 

[SRadke]

Thanks for the help. All my gears are going to run but there is a 3" long piece broken out of the gear case. How much is Cummins going to nail me for that thing?



On the list right now:



Gear case

new dowel pin

block to case gasket

case to cover gasket

front main seal



Anything else? Is there a seal on the injector pump or vac/oil pump that should be replaced while it's out? Will all the valve cover gaskets be reuseable? This is such a great site!



-Scott

 

[Joe G.]

I think the gear case is in the $200 - $300 range. Those prices above are a few years old so they might have changed. I don't know about what other gaskets you may need. I fixed mine as soon as I heard about the problem so I've never had to fix a failure.

 

[SRadke]

OK, here's the list

Sorry I took so long posting this but I wanted to get it all put together to be sure my parts were right.



KDP repair parts needed:



Gear housing #3920519 $205. 89

Gear housing gasket #3931351 $17. 74

Gear cover gasket #3918673 $23. 05

Front main seal kit #3904353 $27. 70

Timing pin seal #3913994 $1. 30

Timing pin holder seal #3915772 $1. 09

Timing pin keeper #3904849 $. 50

Vac\steering gasket #3915772 $4. 64

Inj pump O ring seal #3926722 $3. 89

New dowel pin #3900257 $1. 88



Use this list if replacing the entire gear case. If you cover was damaged it will be listed as the following:



Timing gear cover #3923898 Price unknown



If doing the tab fix you should only need the gear cover gasket and front main seal kit from the list above.



I hope this help you all.



-Scott



Disclaimer: The above part numbers and prices are valid for a 98 model 12 valve Cummins if parts are purchased from Cummins Northwest. They may not be correct for every application.

 

[DSiemens]

Gear housing part number

Does your new gear housing have the "stepped" DP hole? I ask because my brother just bought a new housing, part number 3936256. This housing has the stepped DP hole.

 

[SRadke]

Yup, it had the stepped or "blind" hole as Cummins calls it. You're number may fit a diffrent year?



-Scott

 

[DSiemens]

Thank you. The truck in question is a 1995. His housing is an updated one. I like to keep a record of any/all part numbers. Many times a new part solves the problem, but the poster does not post the part number.