This may sound like a dumb ? but does the VP need to be timed when it's replaced.

 

No. There's an alignment key that indexes it to the gear train. The key can only go in one way, from what I understand.

If you do the install, DO NOT LET THE KEY FALL OUT!

Fishing it out of the geartrain and/or oilpan will ruin your week.

jh

 

a semi mechanic told me that you have to special alignment that only a mechanic can do cause u can screw the engine up or ruin it

 

It can go in both ways, but only one way is correct. There is a mark on the key. Good thing you put the disclaimer in your sig!

Paul

 

So the key is the only thing to worry about, and the electronics take care of injection timing, and other than that is it a problem changing the pump.

 

The search engine is your friend

Watch these video'....

https://www.dieseltruckresource.com/...2&postcount=55

 

Good catch! I'm wondering if there isn't a secret DTR team out there correcting my misinformation at each turn

 

There is a mark on the key for which way it should point but Hohn is correct, once the key is installed, there is only one way the VP can align. There is no adjustment.
Be careful removing the old pump too - that key is just as likely to fall out. Ask me how I know!