Brakes on 8N

ThundermanND · Jul 24, 2016

Well, I got a mess on my hands. I'm taking apart this 8N and doing a restoration on it. One thing that bothered me was on each of the rear wheels one of the studs
holding the wheel on was broken off so I wanted to get the brake drum off which I did. The 2" nuts holding the housing on have been beaten up so bad I'll need to get
new ones, matter of fact I can't even budge them loose. So anyway, I take the drum off and what a mess inside. Grease all over everything, no brake shoes left on the
right side ( I haven't started the left side but I assume it will be the same) and I assume the rear wheel seals are shot.

One thing I noticed when I got the tractor was when I checked the oil level in the housing it was way over filled, I mean nearly to the top of the dip stick on the
side. I can imagine with all the extra 90 weight inside there was too much pressure and it blew the seals. Am I wrong in my assumption?

Bruce (VA) · Jul 24, 2016

Pressure? There is no pressure in the axle trumpets; the bearings are splash lubricated. If you have the sump correctly filled and the tractor on level ground, the oil stops about 6 inches from the seal. So, when the tractor is moving, the oil splashes on the bearings. Over filling the sump raises the oil level so that the seals are immersed. Old seals will leak. See tip # 4. And park it on level ground.
75 Tips

Bruce (VA) · Jul 24, 2016

PS.......

Re the brake screws, see tip # 54
75 Tips

Royse · Jul 24, 2016

The torque spec on that 2 inch nut is 450 ft/lbs.
Usually it's easier to break it loose before taking the tire off.
A good impact wrench will still get it off though.
Make sure you have the spring wire clip out first.

There were changes in those axle seals withing the 8N run.
The early ones had a single seal, the later ones had two seals.
Best to identify what you have and how to replace what's needed.

John Smith has an excellent ID section on his website [b:cc7ff7031c]here[/b:cc7ff7031c] and a tutorial on replacing the seals [b:cc7ff7031c]here.[/b:cc7ff7031c]

ThundermanND · Jul 24, 2016

Thank you my friend. I'll do some research tomorrow. I should have loosened them with the tires on. Good lesson learned the hard way. According to my book, this one has two
seals so I'll get them and new gaskets. I hope the drum is ok, don't need another expense.

Thanks again.

Jimmyjack · Jul 24, 2016

9Ns had brakes?

HCooke · Jul 25, 2016

"One thing I noticed when I got the tractor was when I checked the oil level in the housing it was way over filled, I mean nearly to the top of the dip stick on the side."

Probably a lot of water in the reservoir.

W_B · Jul 25, 2016

(quoted from post at 05:35:52 07/25/16) 9Ns had brakes?

Mine never has!

HFJ · Jul 25, 2016

i've got u beat, W_N. my N has left brakes. right, not so much. simply the weight of the tractor rolling down a slight grade is enough to prevent the right brake from stopping it till the slope levels off.

but the left works well.

ThundermanND · Jul 25, 2016

zero water. They had put an additional hydraulic hose off the bottom of the hydraulic pump unit and probably needed more fluid to run the external unit, whatever it was.

John in Mich · Jul 25, 2016

I had a diff housing assembly (no trans or engine), with axles and hubs, and no wheels on it. I placed lug nuts on two non-adjacent lug bolts and used a long pry bar against the ground to then break the axle nut loose.

Brakes on 8N

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