Ford's answers to the NHTSA 6.7 Investigation
There was a request for a link to Ford's answer's to the NHTSA investigation posted on a previous thread, since closed. Here is the link: Ford's NHTSA Answers to the 6.7 investigation This PDF i...
Forum Discussion
durallymax wrote:
There is still the same regulator on the pump that there has always been, and they swapped the relief valve for a regulator. My guess is to allow more precise control. The Relief valve is simply a spring and is either all or nothing. The regulator would allow better control.
From what I have been told the CP4 pumps on these trucks have a lot less capacity then the CP3s did.
Can you get us some drawings of the CP3 vs. CP4 showing the valves?
Any additional info on the capacity of the CP4 vs. CP3 and technical data would be real helpful.
