Valve guide seals!!

[JMBT]

Hello I am getting ready to do my valve guide seals, CM2250. My engine has the old "small" cap style seals, so that is the only part number that shows up on Quickserve. Does anyone know the part number for the newer style "tall" valve guide seals??

[jimeneztrans84]

Is there an interval for this or y are you changing them? I also have a cm2250 and was wondering

[JMBT]

I am changing them to cure the problem of smoking a bit on start-up after idling to warm motor. After the demandate, when I idle in the morning to warm up, I smoke just a bit, (blue) when I take off. Then it doesn't smoke at all once warm, even if I idle. Several of the guys on here thought valve guides seals when I asked a few months ago. Tomorrow I am pulling the exh. manifold to replace a leaking gasket, and I'll get to see if it is truly the valve guide seals.

[simon999]

I did this on cm2350. You need valve spring compressor part # 4919358 $350
New updated seal kit part #4376219 $120, it comes with new collets.
Take the fuel connectors from injectors out , replace o-ring on those.
Take injectors out, replace oring and copper seal.
Find top dead center on cylinder you work with long zip tie. Make sure you cover oil passages in the head , you dont want drop anything in those holes! Follow cummins quickserve.

[JMBT]

Thanks Simon999!!

[Diesel_Pusher]

(01-11-2018 )simon999 Wrote:  I did this on cm2350. You need valve spring compressor part # 4919358 $350
New updated seal kit part #4376219 $120, it comes with new collets.
Take the fuel connectors from injectors out , replace o-ring on those.
Take injectors out, replace oring and copper seal.
Find top dead center on cylinder you work with long zip tie. Make sure you cover oil passages in the head , you dont want drop anything in those holes! Follow cummins quickserve.

I'm currently rebuilding a 2000 ISX cm570 top to bottom.
Will this update work for my engine ???
Cummins is fantastically unhelpful....

[Hammerhead]

(09-11-2018 )Diesel_Pusher Wrote:  I'm currently rebuilding a 2000 ISX cm570 top to bottom.
Will this update work for my engine ???
Cummins is fantastically unhelpful....

Yes.
This is the v/g seal design and it supercedes all previous versions. If you are replacing your head (and you should be) with a new or OEM Reman it will come with these already installed.

[jimeneztrans84]

(01-11-2018 )simon999 Wrote:  I did this on cm2350. You need valve spring compressor part # 4919358 $350
New updated seal kit part #4376219 $120, it comes with new collets.
Take the fuel connectors from injectors out , replace o-ring on those.
Take injectors out, replace oring and copper seal.
Find top dead center on cylinder you work with long zip tie. Make sure you cover oil passages in the head , you dont want drop anything in those holes! Follow cummins quickserve.

Do you need to replace copper seal when removing injector? I can't just replace the o ring?

[Rawze]

(01-11-2018 )simon999 Wrote:  I did this on cm2350. You need valve spring compressor part # 4919358 $350
New updated seal kit part #4376219 $120, it comes with new collets.
Take the fuel connectors from injectors out , replace o-ring on those.
Take injectors out, replace oring and copper seal.
Find top dead center on cylinder you work with long zip tie. Make sure you cover oil passages in the head , you dont want drop anything in those holes! Follow cummins quickserve.

Not mentioned here is that the fueling connectors going into the block that feed fuel to each of the injectors are married to that injector once installed. The metal end of them is deformed and creates the 40,000 psi seal to the injector. When removing them, number them so that you don't mix them up, or you will be buying new ones because they will get leaky after a while if you have mixed them up.