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Old 05-03-2012, 05:40 PM   #1 (permalink)
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CP3 Mounting Studs Gone -- Need Help

While driving the truck it started gushing fuel. After inspection we discovered the three nuts and studs that hold cp3 pump on had disappeared. The studs did not shear off, or if they did the whole stud must have worked itself out.

I guess my question is -- how did this happen? And most of all where do I find replacement studs?
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Old 05-03-2012, 07:38 PM   #2 (permalink)
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What was leaking fuel? Did a line break or something?

Thats pretty odd never seen a stud come loose let alone all 3.
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Old 05-03-2012, 08:28 PM   #3 (permalink)
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Another member not to long ago had this problem also. He actually caught them coming loose, tightened them and then checked a short time later and one or two of them were gone.

I cant remember what he did to fix the problem or where he found the studs, sorry. But it does happen.
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Old 05-03-2012, 10:14 PM   #4 (permalink)
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I would think if you found out the size of the hole in the front cover you could substitute bolts with a dab of locktite on them. If not, I'll bet any good Cummins shop sells the studs/nuts. Just take them your engine serial number and they should be able to get them. If ALL else fails, new front gear housing.
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Old 05-04-2012, 08:07 AM   #5 (permalink)
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Due to the Cp3 shifting, the line leaked at fitting.

I've searched everywhere for replacement studs and so far nothing. Not sure just yet if the studs are threaded or pressed or molded into the gear housing. Will know today.
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Old 05-04-2012, 08:26 AM   #6 (permalink)
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That's crazy!! Was it the stock pump? I guess it's just something else to look at when the truck gets serviced.
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Old 05-04-2012, 09:28 AM   #7 (permalink)
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Originally Posted by Moobesor5.9L View Post
Due to the Cp3 shifting, the line leaked at fitting.

I've searched everywhere for replacement studs and so far nothing. Not sure just yet if the studs are threaded or pressed or molded into the gear housing. Will know today.
Please call Todd @ 763-228-7121 ASAP..there's a reason they snapped.
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Old 05-04-2012, 10:38 AM   #8 (permalink)
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So is it a big secret and you can't let everyone know how to prevent it?
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Old 05-04-2012, 11:09 AM   #9 (permalink)
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Chevy.. I here..the problem IS....... like other the threads the keystroke kings jump in..And I am sick of it.. beside that I need more info then thread has dispersed.
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Old 05-04-2012, 12:17 PM   #10 (permalink)
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Could you not ask the questions in here and like I said fill all of us in? Since that is what a forum is about.
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Last edited by 1997chevy454; 05-04-2012 at 12:21 PM.
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Old 05-04-2012, 04:55 PM   #11 (permalink)
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The OP call..the info I needed was disclosed..The engine is fresh, So it May be related to improper TQ on the studs.
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Old 05-04-2012, 08:17 PM   #12 (permalink)
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What other instances could there be where this happens?
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