Replacing your CP3 - DIY - Dodge Cummins Diesel Forum
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post #1 of 8 (permalink) Old 09-05-2009, 02:12 PM Thread Starter
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Thumbs up Replacing your CP3 - DIY

This DIY pertains to replacing the CP3 injection pump on a Common Rail 5.9. It's a fairly simple process, but some folks think it's a bigger deal than it really is.

Early CR's (03-04) will have an aditional step of removing the kickdown bracket for the TV cable going to the transmission as it interferes with removing the CP3.

WARNING! Cleanliness CAN NOT be over-emphasized when installing your new pump. Leave all fuel port covers in place until ready to connect lines.

WARNING! Whenever dealing with high pressure fuel from the CP3, use caution. At idle, the CP3 is making approx 6800 psi of fuel pressure. This is MORE than enough to cause severe injury or death.































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post #2 of 8 (permalink) Old 09-05-2009, 02:19 PM
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Very nice, Thank you !!!!!!!!!!

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post #3 of 8 (permalink) Old 09-05-2009, 02:20 PM
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Good write-up


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post #4 of 8 (permalink) Old 09-05-2009, 02:26 PM
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nice photos, a good read and i thought it was going to be harder when the time came.



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post #5 of 8 (permalink) Old 09-05-2009, 05:01 PM Thread Starter
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The worst part is getting the pump back in the pilot bore of the gear housing, everything else is cake.

Put some clean oil on the o-ring and lube the pilot bore of the gear housing and it's much easier.

Once your get the o-ring past the bevel on the pilot bore, the pump will slide right in.

Make sure you don't have any oil on the pump shaft and get as much oil off the shaft bore in the pump gear as possible.


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'12 Ram 3500 DRW - Garmon High Pressure 68RFE

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Last edited by cumminalong; 09-05-2009 at 05:11 PM.
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post #6 of 8 (permalink) Old 09-05-2009, 05:09 PM
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Wow, Nice write up, deffinatly easier then it looks.

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post #7 of 8 (permalink) Old 09-05-2009, 05:12 PM
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very nice write up sir...

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post #8 of 8 (permalink) Old 09-05-2009, 09:41 PM
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Moved to the 3rd gen Tech Articles forum.

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