1956 Massey TO-35 rear hydraulic issue

rstockford

New User
Hi guys. I m new to the site and have read many threads about my issue. The issue is my rear hydraulics will lift heavy weight, but it "knocks" and shakes when its about 3/4s way up. I have a dirt scoop and even empty it will not hold it up without knocking loudly in the transfer case area.

HERE IS WHAT I ALREADY DID
1. Drained, cleaned the transmission housing.
2. Replaced with 8 gallons of 80-90w
3. New rear seal for PTO.

Like I said, it will lift but it struggles to hold up even 200lbs. Is it the relief valve? Ill post a video tonight.

Thanks a lot, Ryan
 
How can I check the relief - control valve on the side cover and what am I looking for? Secondly, Ive read about adjusting the top 3 point clevis arm. I just need to know what I need to do. Im mechanically inclined and worked on atvs, riding mowers, but not a lot of experience in hydraulics.

Thanks again, Ryan
 
the relief valve may make it weak, but knocking is sign of excessive play between pump crankshaft and yolks that hold the pistons.
You may have to drain again and remove the pto shaft and disassemble pump. could be something broken in pump to cause knocking too. There is brass blocks around pump crank that can be erroded by using extreme pressure oils with Zinc and Phos. This is just guess but not everyone knows not to put hyd oil in with EP additives.
Good Luck
Jim
 
Did you add back 90 weight gear oil or
GL-1 90 weight mineral oil. Big difference!!!!!!!!

I have added a bottle of Lucas oil stabilizer to the transmission oil in my TO 35 before when I was hearing a slight knocking sound when it was hot plowing and I picked up the 3 plows,

Once I changed transmission oil I have not added an additives
So far so good,
 
No, just 80 90w. What is the difference in the mineral oil? So by adding the Lucas stabilizer you think may help?

Thanks!
 
Several years ago, we had a retired 'Harry Ferguson Ltd' employee on this forum. His word was cut in stone.
John UK recommended us to use modern 10W'40 engine oil in the transmission case. Since i was having the same confusion talking to different dealers, shops and salesmen, i tried it in one fergie. Now, it is in all my HF and MF tractors. I always have a pale of 10W-40 around for all the engines, so topping up an arsenal is not a big deal. We need a guru like John around again...
 
I'll second that. In fact, I run it in mine and it works great! Better for low temperatures too.
 
So I've read and have been told to use
hydraulic oil, 8090w, 1040w, mineral
oil.....

What would make the hydraulic lift arms
benefit better to operate in 1040w?

Back to my issue, the knocking is bad when
loaded with weight. So would oil really
matter this issue?
 
What I was always told:
GL-1 oil is non detergent oil
Over in England I understand they have 10w40 oils non-detergent, but we can not buy 10w40 non -detergent oil in US,
I understand that detergent oils have additives that can attack the bronze bearings in the transmission, that is why Ferguson used non
detergent oil in the transmission hyd system, also no transmission oil filter, dirt will fall to the bottom of the sump with non detergent oil
That is why you have to drain the oil, to get the dirt out,
That is the reason The English can use their 10w40 oils

That 90 weight GL-1 oil is very thick in the winter, reason most have gone to thinner oils for tractors used in the winter,
I just start mine up, let motor warm up, by then the lift will work but slowly as my pump is also tired,
At this stage in the life of the old tractors I guess 15w40 motor oil might be a better chose as the transmission bearings issue may not be that
big of thing, they just did not good oils back then like we have today, also they did not
 
Depends on where you are, if its cold a lot 10W40 would be the way to go. The mineral oil would be better where its hot most of the time. The 80W90, and other thick gear oils have EP additives that are not compatible with the materials some parts of the hydraulic system are made from (brass, bronze).


The knocking you hear, and or feel is usually a worn out pump. All the thicker oil would do is lessen the knock some.
 
Hello Ryan,
As well as what has been said below the knocking can be caused by a broken pump dowel/s. On each side of the casing you will find an oval plate with two 1/2"unf nuts hold it on. These are the pump dowels which go through and retain the pump whilst allowing a small degree of movement. Quite often if the dowel is broken you will find that the corner of the front pump plate where it locates will also be broken. This allows the pump body to knock against the casing and makes quite a noise. With the dowels removed one at a time and using a flashlight you should be able to see through the hole to see if the plate is broken.

As far as the oil issue is concerned; 80-90W is definitely too heavy. The hydraulics will be slow when cold in warmer weather and a lot slower in cold weather. In the UK we have a universal tractor oil which is commonly used. Chech the MF spec for the States. I think it's ML1129.

DavidP, South Wales
 
Well David... it might be the right time to gather the College of Cardinals, and elect John's successor.
Watch for the white smoke coming out the chimney...
you gotta white suit we can have altered??? Never mind, we'll buy one out of the FENA budget....
 
It's your pop-off valve. The hydraulic quadrant control needs to be set. It's doing what it's design to do. If it didn't pop off it would bust the top(under seat) rock shaft-transmission cover. I'm sure you have seen this with other people's problems. Don't let it set and pop off. Set lever down below where it pops off until you get it set.
 
Hello Tony,
You have lost me a little here. If we are in a time of 'sede vacante' then I will certainly look out for the white
smoke but coming from which chimney? Don't have a white suit but have a pair of white trousers and waistcoat worn to a
few fancy-dress events......NO, not as John Travolta.....I'm much better!!!!!!!!;0))))))))

DavidP
 
You just gave me a great idea David! I can rent my 23C to the vatican when they need to make white smoke! With my luck, they'll want me to donate it for free...
Is there any news with John anymore? Got to be in his 80's by now? I know he was getting ??? dis-enchanted? with us here.
i know i dis-enchant everyone around me, without any effort at all....
oh, when you run into Julie Browning, tell her i am now the proud owner of a fine flock of dysfunctional chickens... then... with some effort , i might have one friend in the world...
 

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