After swapping on my new P7100 the timing slipped and is to retarded to be driven. I was told that I could get it back to stock the following way, can someone tell me if this works? I have everything torn down but its almost impossible to see in the pump timing slot even with a mirror...

pull the timing pins
bar the engine and lock the injection pump when the flat piece of metal comes around.
Remove pump
Bar engine and lock at TDC
Contact clean the hell out of the interference contact points
resinstall
pull pins torque to timing gear retaining nut to 140lbs
Done

Zack

 

I always thought when the timing was off it had to be re-set as in retiming it, maybe im wrong..

 

That would work, but it would give you 0 deg timing. The injector would fire AT tdc, not before.

This would not run well (if at all), as there would be no compression to ignite the fuel after tdc.

And it would be a lot of work too.

 

That seems like a lot of trouble to go through and i dont know how accurate it would be either. If it were mine i would go ahead and pay someone to set the timing for me, or if you have the timing kit and the tools, go ahead and do it that way. I wouldnt set it back to stock either, i would at least go ahead and set it around 15 or so.

 

Mass Diesel! 508-660-7093. Nuff Said.

 

if you spin the motor over till the pin on the pump lines up, then pull the pump gear, not the pump. then spin the motor over till the motor pin drops in. then put the pump gear on the motor will be at what ever degrees the factory set it for. as in 14.00 or 12.5 . just remeber to pull both pins before you crank the motor over.

 

what he said......

 

If you cant get it close enough to drive it to mass diesel for the timing, youre going to have to wait on AAA to tow you. Ugh.
Wish I had the timing kit. I only need to do this rarely so it hasnt been worth getting so far.
Ive got a small LED flashlight and you have that nice inspection mirror. Want to give it another shot?
What does lining up the pump like this get you? the stock 12 degrees? Or something else?

 

it gets you what ever was stock for that pump. 12.5 for a 215

 

By doing it with the timing pin in the pump....... the timing may or may NOT be at the stock setting. It will be close but doing it by the timing pin in the pump is a very very sloppy way of doing it. I know this from personal experience.
I recently pulled my pump off and when i put it back on, i did it with the pinning method to get the timing back and after i put it on, the timing is WAY below stock. It does NOT rev above 2500 without falling on its face and popping with white smoke. Even though the pin is a way to time it, is it not even close to accurate.
My timing kit should be in tomorrow and i will set mine to 18* or so.
The truck WILL run might not be too good but it WILL run. So, either wait for a timing kit or set it back using the pins and take it somewhere.
For someone else, it may be the opposite. The timing may be increase after doing it with the timing pin. Just all comes down to luck.

Get a timing kit and you should be happy.

Lance

 

pinning the pump and motor to set the time is how every cummins mechanic was trained how it is done.

 

How wil that work ?

My understanding was that pinning the pump puts it ready to 'fire' #1 injector. If that is the case, and you set the engine to tdc using the timing pin, then wouldn't the injector be 'firing' at tdc, instead of before ?

 

Its how its quoted in the FSM on pump removal.

 

How'd you make out?

 

I havent done it yet... I've been busy and just driving my car. I actually havent driven the truck since the end of July! Monday or Tuesday I'll have at it though. It's got me realizing I don't really need a truck and should just stick with the benz running veggy, the truck was more of a "toy" . Once shes back up and purring with that sweet smell of free fuel I may put it up for sale

Zack