always prime pump

[jacxs11]

on my 8-n i always have to bleed air of the pump befor i can rase the 3- point why? here are some pics. of pump and bleed screw on top

 

[981demo]

first off your tractor is a NAA, the reason you have to bleed repeatedly is the pump shaft seal is allowing pump to suck air past.

 

[Tom N MS]

8N ?????

 

[jacxs11]

how can i fix it? and is there a pic. of that area of fix?

 

[981demo]

remove pump and completely rebuild it, probably need new shaft and bearings as well as a rebiuld kit.

 

[jacxs11]

were could i get all this?

 

[jacxs11]

how can i tell what it is? here are some more pics.

 

[forddoc]

sounds like a rebuilt pump is what you need, I have parts, or rebuilt pumps. email open

 

[r geiger(oR)]

8N is a flat head, your is not!

 

[Tom N MS]

This should help
Untitled URL Link

 

[Anonymous-0]

you are right

 

[Cliff(VA)]

I hope that you realize that you have a NAA and not an 8N.

I had the same problem with my NAA. I had to rebuild the pump. The real problem was that the pump shaft was pitted from rust and destroying the shaft seal.

It took care of my problem.

Parts are available here and other places online. Make sure that you get a kit for the "piston pump" and not the "vane pump". The piston pump is a later change.

Good luck

Cliff (VA)

PS You need to get some manuals either Ford or IT

PPS There is a trick to removing the seal and bearings in this pump. Search the archives or get a hydraulic video for more details.

 

[souNdguy]

as the others mentioned.. you have an NAA not an 8n.. and while the pump may need rebuilding. if could also be a suction side leak at the plumbing below the pump.. Ie.. orings.. et.c

check em first.. they are cheaper than a rebuild.

soundguy