Installing rebuilt fuel injection pump

[Mudball]

This is the first injection pump Ive ever messed with so Im new at this. Im going to be sending off my fuel injection pump to be checked out and possibly rebuilt for my L245F.
It currently has shims under the injection pump, and if I understand correctly, its so that its timed correctly between the cam lobes and the tappets on the injector pump. Im concerned about the timing, or gap, I guess you could say, because of long term wear on the cam lobes when installing a rebuilt injection pump with new tappets(if it gets them)...meaning a need for adjustment ?
The only thing I can find in the WSM is that adding or removing a shim(s) changes the timing by a certain amount of degrees to TDC.
After the injector pump is possibly rebuilt or not, then is there a measurement of some kind that needs to be taken and/or adjusted due to wear between the cam lobes and tappets or does the timing need to be checked ?
Or as long as it seems to run ok then dont worry about it ?
Thanks

 

[D2Cat]

I needed a pump for my L305 a year ago. I ordered a new pump, including freight for about $425 from these folks, http://oregonfuelinjection.com/index.php?page=sec/diesel-vehicle-service-info.htm

Great to deal with, very helpful, quick delivery.

To answer your question, I saved the shims and simply reinstalled them with the new pump. Fired right up and runs fine to this day.

 

[ShaunRH]

I wouldn't lose much sleep over it. The timing might be off due to wear but it's going to be in fractions of a percent, minor fuel cost issue, maybe slight but nearly unnoticeable power loss. D2Cat is right on, use the same shims and power forward. Those are more for machining differences between the engine and pump housings.

 

[Mudball]

Sounds great !
Thanks for all the help.

 

[North Idaho Wolfman]

100% agree with the others get it rebuilt and then reinstall.

The fuel cams in those engines get very very little wear over a long period of time.