Ive had a few folks tell me to re-adjust the governor arm on the pump after making changes like installing a new cam plate or moving it forward. I was talking to a tech at TST about getting a governor spring kit on the truck and he mentioned it isnt usually a good idea to adjust these things on the truck. Something about the proper procedure is to adjust them on the bench instead.
So now Im wondering if Ive screwed up this adjustment or not. Anyone thats worked with the P7100's got any input on this one?
Also, how would one tell if the cam in the pump has worn down? Is there a high pressure line tester out there for these things? Im assuming theres a spec for pump - injector line pressure. Im trying to pin down a power problem and thats one of the last things Ive got to look at.

 

I adjudted mine without any problems. Did you have the Fuel shutoff solinoid pulled up when you adjusted it?

 

If you are fighting a low power problem check the fuel heater. I had been planning on replacing the screen since I bought my truck and finally got the kit from cummins. Long story. Anyways when I dropped the fuel bowl half the screen was clogged with debris. The pump can pump all it wants but the injector pump can only inject what makes it to it. The gov arm is a cake walk to adjust but getting the coverplate off can be a challenge. It may be easier to remove the fuel filter. The gov springs are an easy install. I wouldnt let the tech rep scare you. I just did my truck this week. Just take your time and it will go smoothly.

 

how is it a cakewalk ??

I can get the cover off fine, but I have nothing that will fit in there to loosen the locknut.

Do I have to remove the fuel filter housing ?? Even then, It doesn't look like any socket I have will get in there.

 

I used a 10mm deep well socket (from memory it may be an 8) on a 1/4" ratchet. I stuck one hand in there to quide the socket up and on the bottom lock nut. If you let the ratchet **** at an angle the nut will nut loosen so it takes a little patience. Once that was loose I used a small set screw driver (like the kind for adjusting a lawn mower or chainsaw carb) to adjust the screw till the gov arm was where I wanted it. Tighned back the lock nut and reinstall the cover. I didnt have to pull the fuel filter but I did need to do all the work inside the back of the pump by feel. If you havent already checked out the tech article on the piers website do so. Once you know what you are trying to find is goes pretty quickly. The worst part was getting the rear cover off which you already have. For that I used one of those interchangeable screwdriver bits in a shallow socket on my 1/4" ratchet. The whole process was pretty easy but figuring out where to reach your hands through was the challenge.

 

The first time into the job I removed the fuel filter and that took a lot of aggravation to get back on. Id recommend getting a mirror, a deep 10mm socket and a stubby slotted screwdriver. Id also recommend taking the slotted bit from a hand impact wrench and taping that into an 8mm socket to get at the bolts holding the back cover on.
turn the key in the ignition and push up on the fuel shutoff and it should latch. Then you can do the adjustment with one hand while adding a little throttle with the other to get the arm in contact.