N14 cummins oil leak question any help great.

Yes the whole assembly has to come off, the gaskets are made in many thicknesses but just paper, and attached to the back of the plate are the cam followers takes about 3 or 4 inches of straight back to get these clear, push tubes go in them

 

I had the same problem on my 99 N-14 C+. This is the reason I got rid of mine, bad design. The ONLY way to fix this is to remove the compressor and fuel pump. The whole valve train and jakes need to come off. Then you need to get lucky and find the part number on the old deteriorated gasket to get the correct thickness one. If you cant, its a crap shoot which thickness you need. The wrong thickness will make it impossible to get timed, and then need to be taken all apart again to try another thickness. In the end you can have Cummins do it at about $1500. Just to fix a leaky gasket.

 

All three rocker boxes could have different thickness gaskets as well, so just keep that in mind. Overhead adjustment are not that hard on them.

 

Yea and its always the front hardly ever the back two.

 

It isn't such a big deal to remove the compressor and fuel pump. If you have the right 5/8 C spanner, it's almost impossible without that magic spanner.

 

That's the one. No need to split the pump and compressor, its a bit heavy but doable. There isn't timing on the compressor and pump. It has a coupling between the compressor and auxiliary drive gear, it's a splined coupling that only slides out.

 

The timing is measured down the the thousands of an inch, it needs to be dead on, cummins only allows .001 variation fast or slow when you are setting the timing.