Removing fuel pump on N14

3803478 | CUMMINS N14 FUEL PUMP OVERHAUL SEAL AND GASKET KIT, NEW



I don't know if this is the exact kit you need.
Check with Cummins dealer to make sure.
Good luck.

 

The pump mounting gasket is 3076228. Spider is 3046200.

A complete damper kit is bm76340. That's the whole shebang.

Just to reseal you should need ring seals 100099, 139988, 151900, and diaphragm is 202897

 

Oops, forgot your gaskets. Sorry. 110855 and 3069017.

 

It is not as easy as that picture looks. I would just remove it and do the damper. if you choose to do the whole deal mark all of the mating sections so they cannot get mixed up. The shaft usually looks bad where the seal rides but normally is OK with a new seal. If you get into it have a good clean area to work. Lay it out and put it back the same way.

 

The bolts are 7/16 thread with 5/8 heads on them usually. I’ve ground the heads down to fit a 9/16 for better clearance. Most of the time as long as nobody boogered the threads once you get them broke loose and a turn or two they will come out with your fingers. And should screw back in almost the whole way with fingers only needing wrench for final tighten.

Like has been said above a special custom bent contortion wrench is recommended.

The mounting gasket, coupler, shutoff solenoid, and fuel pressure damper are all the same as used on the PT/AFC pumps since the 1970’s.

 

I went to Cummins and got the pulsation dampener kit, spider gear and gasket. Built my own wrench.

 

Only two bolts hold that to the pump, the other 2 are just holding the damper together.

 

Iooks as if mine is leaking from where it mounts to pump and the dampeners cross section.

 

So when you buy a replacement it will come complete.

You just need the o-ring that fits between the damper and the gear pump as well as the new damper.

 

Cummins told me that the pulsation dampener kit, is a separate kit and not included in the pump kit.