If that don't beat all!

gwstang

Well-known Member
'52 8N side mount, new pto shaft, full to the mark GL1 hydro oil.

Got one durn thing working and another one quits. The new pto shaft is working great. However, the lift quit working while I was pulling some dirt in the box blade this a.m. It started making a clunking noise and now won't go up at all. I noticed it started shuddering a bit right before it quit working. The pto shaft will turn when the lever is engaged and stop turning when dis-engaged, but won't lift when it should. It's fixing to be some major storms down here so I will just unhook the blade and let it sit and get the N under cover as I don't like to leave her in the rain if I can help it. I reckon the side cover needs to be removed so i can look in there, but don't know what I am looking for? I've always belonged to the "fix something and the next weakest link will break soon club"! :oops:

PS I've been using the same blade and equipment for 17 years and it just suddenly decided to quit working? Something ain't right.
 
Is the lift stuck up/down? Or does it float freely?

I would make sure the the fork is still attached by pulling the right side cover and sticking your hand in the oil. It should be connected to the control valve at the rear of the pump. ENGINE OFF FOR THIS CHECK.

Next, start the tractor and engage the PTO. Look at the oil at the rear of the pump for turbulence in the oil. This would indicate the relief valve. NO HANDS WITH PTO TURNING.

Others should be along with more suggestions.
 
I forgot to add that it is just down all the way and won't raise at all with the pto engaged (shaft is turning).
 
With control lever all the way down or PTO out can you lift the arms up by hand?

I've got one in the shop now with the arms stuck up. Opposite of your issue. Haven't looked at it yet, but I suspect the relief is rusted shut. Yours could be stuck open and any pressure built is dumped straight back into the tank. It takes pressure to make those arms move.

Excessive turbulence in the oil a dead give away that the relief is open.

What did the knock sound like? Where did it come from? Worn pumps make a knocking noise, but they usually last awhile with the knock and don't hurt much
 

I just replaced the pto shaft with a new one. It just started knocking this morning while I was using it the first time out. Ran for about 30 min and then the knock started. It's sort of a thumping noise under the right foot board and I can feel it under my foot. Never did that before shaft replacement, just odd timing?
 
I remember your other post. If you had a twisted shaft, it may have caused a particular wear pattern in the pump. Your new shaft, being straight, may be fighting that wear pattern caused by the old one. I would try the easy stuff first and get more opinions.

I'd hate for you to hafta drop the pump...AGAIN
 
(quoted from post at 03:14:14 04/12/13)
I just replaced the pto shaft with a new one. It just started knocking this morning while I was using it the first time out. Ran for about 30 min and then the knock started. It's sort of a thumping noise under the right foot board and I can feel it under my foot. Never did that before shaft replacement, just odd timing?

When you were working on the pto shaft you said " I whacked it with a hammer a few times and it went in...". That's a real good way to break the pump pistons. You might be looking at a pump rebuild or replacement.
 

Yep, how right you are. I drained the oil this a.m. The pump body is cracked about 2" to the inboard of the top chamber bolt. It starts at the very top and is split down the side about three inches. Can this welded? It is in an easy place to get to (with the pump out of course). Guess I'll remove the pump and see what else is broken. When I break something, I usually break it good n proper. :shock:
 

I will be needing something, I'm sure. I'm working night shift this week so it will be a week or so before I can really drop this to see what all I need. thanks, Gary.
 
Sorry to hear that Gary. Usually parts that spline, mate, slip fit, etc together should not be forced into place unless specified. Good luck!!!
 

I knew better but got in a hurry. I have a '56 cheby pickup and a '66 mustang that I've restored completely/built motors etc and I still haven't learned that the short cut means a do over and more $$$$$ in the long run...lol :(
 
(quoted from post at 18:54:08 04/12/13)
I knew better but got in a hurry. I have a '56 cheby pickup and a '66 mustang that I've restored completely/built motors etc and I still haven't learned that the short cut means a do over and more $$$$$ in the long run...lol :(

No worries, I'm the same way.

We have a saying on the shop floor at work..."If you don't have time to do it right, when will you have time to do it over."

We've all been there. You'll have it up and running in no time.
 

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