The Cummins caps fuel pump

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This is an overview of the cummins caps fuel pump which was actually the very first common rail generation fuel system.
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I started working at Cummins in 1997 In 1998 they sent me to school to get certified on this caps fuel system and ISC engine certification. In school they told us the same story 2 engineers got together and drew it on a cocktail napkin. I have the drawings.
By the way, that weird shape tube that you're talking about your video is called a rate shape tube. It has an influence on fuel injection. That's why it's shaped like that.

blacksmokin
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you didnt mention the diagnostic fitting #11. is tha a port to measure pressure out of the gear pump?

michaelhoenes
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Great information about this pump...I wish that they wasn't so expensive. A rebuilt one is just as much as a brand new one...

TheBlkac
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We bought a 2000 motorhome couple years ago that has an ISC with CAPS system. We’ve been refreshing the coach comfort and aesthetics stuff and doing corrective and preventative maintenance on the chassis systems. I’ve read that when a CAPS system is replaced, you should also replace the transient protection device. Question - At 24 years young, is there any justification in replacing the transient device as a preventative maintenance action?

jamespratten
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where can I buy parts for this pump? I looking for the distributor.

luiscortez
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been having an issue with my dads iveco acco truck. starts perfect, runs great, but it won't rev out over 1700rpm even in gear. Has no fault codes on cummins insite either. It's proving very hard to diagnose but I believe the issue is fuel related. it's just not getting that extra 10, 000psi to give it power. It has this CAPS fuel injection system but I'm only an apprentice auto sparky and I don't know where to start... I feel like that main pressure control solenoid may be the cause? Any ideas?

edwarddecastella
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These pumps always seemed to break in the same way the drive coupler from the gear pump to the distribution head would tear up the shaft

badlanz
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I have a 2014 ISL 8.9L do these have CAPS pumps too.

timothyberlinski