hydraulic pump

6817 Views 24 Replies 6 Participants Last post by slip knot, Jan 14, 2012

thenubsterman

Discussion Starter · Jan 10, 2012

Hey, can a normal person rebuild a hydraulic pump on one of these old n tractors, does it require any special tools.

1 - 20 of 25 Posts

SandDawg

· #2 · Jan 10, 2012 (Edited)

thenubsterman said:
Hey, can a normal person rebuild a hydraulic pump on one of these old n tractors, does it require any special tools.

Yes a normal person with common hand tools can repair the hydraulics on the N models. It is suggested strongly that you have a buddy or two to help you do the heavy lifting so you do not damage some of the internal linkages!!

I suggest that you have a shop manual handy and do plenty of research before hand!:thThumbsU

Here's a good MTF link with a bunch of info to download on the N's including shop and operator manuals.

Sticky link: http://www.mytractorforum.com/forumdisplay.php?f=217

This thread may answer a lot of your questions- http://www.mytractorforum.com/showthread.php?t=94627

Other Sites to read:

http://www.ytmag.com/articles/artint261.htm

http://www.ytmag.com/articles/artint265.htm

http://www.myfordtractors.com/hydraulics.shtml

:trink39:

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SandDawg

· #3 · Jan 10, 2012

Found the "8N-Hydraulic-Lift-How-To-Repair-Economically" write up I was looking for, it's a PDF so you'll have to down load it.

http://www.ntractorclub.com/howtos/pdfs/8N-Hydraulic-Lift-How-To-Repair-Economically.pdf

speedy1wrc

· #4 · Jan 10, 2012

Rebuilding the pump isn't bad at all. Like said above though, and extra set of hands to man handle it is nice.

The pump is pretty heavy so getting it out and then back in again might be the hardest part.

thenubsterman

Discussion Starter · #5 · Jan 10, 2012

alright sense i'm redoing my old 9n, i was debating if i should spend the money and just rebuild it now or just wait, it worked fine when the tractor was running.

But i thought i read you needed a tool for alignment, heck that could of been something else. I work on alot of vehicles, and not enough of my own stuff lol.

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thenubsterman

Discussion Starter · #6 · Jan 11, 2012

I also see a jig that allows for the correct adjustment so the tractor will raise 3 point all the way wonder what the jig looks like and what it "bends" to make it correct

speedy1wrc

· #7 · Jan 11, 2012

Shouldn't be any "bending".

The adjustsments are in the quadrant position and to a lesser degree the draft spring compression.

There are a ton of DIY's on how to test/adjust the linkages and spring tension to make it work.

thenubsterman

Discussion Starter · #8 · Jan 11, 2012

Where do I look up the DIY at

SandDawg

· #9 · Jan 11, 2012

thenubsterman said:
Where do I look up the DIY at

8N Quadrant Adjustment:

http://www.google.com/search?q=8+N+...s=org.mozilla:en-US:official&client=firefox-a

oldsarge

· #10 · Jan 12, 2012

Where ya gonna find somebody "normal".?......Not around here I betcha!

thenubsterman

Discussion Starter · #11 · Jan 12, 2012

well thats true(no normal humans around here) but we are normal, and thanks, didn't know how i should search it.

thenubsterman

Discussion Starter · #12 · Jan 12, 2012

Oh so it doesn't seem to bad to adjust that, next is how tight to i make the big spring on the back. I know probably dumb questions, but you guys are the ones with the knowledge, i would just like the tractor to be right when i get it put back together

speedy1wrc

· #13 · Jan 12, 2012

N tractor hydraulics How To's

SandDawg

· #14 · Jan 12, 2012

oldsarge said:
Where ya gonna find somebody "normal".?......Not around here I betcha!

I'm NORMAL! Everyone else is STRANGE! :aetsch:

:trink39:

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thenubsterman

Discussion Starter · #15 · Jan 12, 2012

Lol very true now I debate to I rebuild
My pump sense I have the tractor apart? What do u think?

SandDawg

· #16 · Jan 12, 2012

thenubsterman said:
Lol very true now I debate to I rebuild
My pump sense I have the tractor apart? What do u think?

Might save you the trouble of tearing it back apart later! :fing32:

:trink39:

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thenubsterman

Discussion Starter · #17 · Jan 12, 2012

that is what i was thinking, because i plan on painting the tractor almost as a complete assembly. that way all the bolts get covered and i don't have to worry about scratching it with a socket, you know how new paint is.

JohnW

· #18 · Jan 12, 2012

thenubsterman said:
Lol very true now I debate to I rebuild
My pump sense I have the tractor apart? What do u think?

All depends on how well it worked before you took the tractor apart and only you can decide if it worked to your satisfaction. Did it lift loads with out knocking? Not did it hold them but did it lift. I would not do it unless it just really was showing signs of loss of pressure. I would rebuild the lift cylinder while it is down.

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speedy1wrc

· #19 · Jan 13, 2012

I've got 1 8N with a completely dead pump and now after working the other VERY hard all Summer, the second is starting to knock.

JohnW

· #20 · Jan 13, 2012

A little knock is not going to hurt a thing, in fact if you listen close enough most any of them with any age will be. Main thing is does it still lift (which your isn't) and most that have weak lift is due to leaking lilft cylinders and not weak pump pressure. It will also make more noise with the thin 134D oil vs the 90wt.

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