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I have a 1965 gas 135 with a loader installed on the front and I'm trying to work out problems with the hydraulic system. I bought the tractor a few years ago and the rear lift arm and bucket hydraulics have never really worked properly since I bought the tractor. The tractor itself seems to be in pretty good shape though, and it suits my needs well for what I need.
So here's the main problem. Like many of the posts I've researched here, my lift arm leaks down (within a half hour or so I would say) when the tractor is turned off, that doesn't really bother me too much since it comes back up when you start the tractor back up. The main problem I have is that when you try to set the height of the lift arm for either mowing or tilling, and you get it where you want it to start working, as you start moving along, the arm changes position on its' own and either goes up or down to an extreme. When it goes up too far, it's hard on the connected drive shaft and drive train obviously, and I constantly have to fight with the lift control to try to maintain a constant height, unless the lift control is in the full downward position. Basically the lift arm wants to be either all the way up or all the way down unless I'm fighting with it, which doesn't make for a pleasurable old tractor experience. lol
The other problem I've found is that when I want to operate the front loader, I have to drop the 3-point lift arm all the way down, prior to switching the diverter control over to operate the front loader, because if I don't the front hydraulics won't work at all. Even when I do this the loader hydraulics are slow and pretty weak. I don't know how fast or strong they actually should be on this old of a tractor since I'm more accustom to modern hydros on my skid loader and other heavy equipment, but I think that they should work better than they do. I'm not sure if the loader problem is related to the lift arm problem, or could be related to the poor leaky job they did piping them in to the diverter valve on top of the top cover.
I should tell you that I am using the Traveller Premium Universal Tractor Trans/Hydraulic fluid from Tractor Supply in the tractor. Don't know if that matters, but I saw that some on here recommend it.
From researching other posts about this subject, my plan of attack is to check the following in the following order, and ask if this sounds like a good plan of attack?
1- Mesh filter inspection and cleaning
2-Oil leakage from lift cylinder inside
3- Turbulence around the relief valve inside
4- Check adjustment and condition of lift valve linkage inside
5- O-rings on the lift tube under the diverter valve
6- Replace the diverter valve (I don't like the one on there anyway and it weeps oil)
7- Piston and ring replacement
8- Pump replacement
Thanks in advance for your help everyone. Tim
So here's the main problem. Like many of the posts I've researched here, my lift arm leaks down (within a half hour or so I would say) when the tractor is turned off, that doesn't really bother me too much since it comes back up when you start the tractor back up. The main problem I have is that when you try to set the height of the lift arm for either mowing or tilling, and you get it where you want it to start working, as you start moving along, the arm changes position on its' own and either goes up or down to an extreme. When it goes up too far, it's hard on the connected drive shaft and drive train obviously, and I constantly have to fight with the lift control to try to maintain a constant height, unless the lift control is in the full downward position. Basically the lift arm wants to be either all the way up or all the way down unless I'm fighting with it, which doesn't make for a pleasurable old tractor experience. lol
The other problem I've found is that when I want to operate the front loader, I have to drop the 3-point lift arm all the way down, prior to switching the diverter control over to operate the front loader, because if I don't the front hydraulics won't work at all. Even when I do this the loader hydraulics are slow and pretty weak. I don't know how fast or strong they actually should be on this old of a tractor since I'm more accustom to modern hydros on my skid loader and other heavy equipment, but I think that they should work better than they do. I'm not sure if the loader problem is related to the lift arm problem, or could be related to the poor leaky job they did piping them in to the diverter valve on top of the top cover.
I should tell you that I am using the Traveller Premium Universal Tractor Trans/Hydraulic fluid from Tractor Supply in the tractor. Don't know if that matters, but I saw that some on here recommend it.
From researching other posts about this subject, my plan of attack is to check the following in the following order, and ask if this sounds like a good plan of attack?
1- Mesh filter inspection and cleaning
2-Oil leakage from lift cylinder inside
3- Turbulence around the relief valve inside
4- Check adjustment and condition of lift valve linkage inside
5- O-rings on the lift tube under the diverter valve
6- Replace the diverter valve (I don't like the one on there anyway and it weeps oil)
7- Piston and ring replacement
8- Pump replacement
Thanks in advance for your help everyone. Tim