New to this forum actually just found it and hope someone here can help. I recently purchased a 2002 TC35d with 98hrs,that soon developed a problem with the hydraulics not operating at all. I soon found that with a little loosening on the top suction pipe just a little that they would begin to work again but after warmup that would start leaking. I have taken each line off to check for any type of obstruction or broken seal ,also checked filters ,took suction line off and there was no fluid in the pump ,I thought then I needed a pump and thats about all i have checked. I also noticed that there seems to be an unusal amount of air coming out the fill hole when it is removed. I would appreciate any advice or help that anyone can and will give.
TC 35D Hydraulics
- Thread starter MUDKAT
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ronjhall
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MUDKAT
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Your tractor may be low on Hydraulic fluid.
If I removed the suction line to the pump on my <font color="orange"> Kubota </font> all the oil would drain out of the transmission. <font color="blue"> NH </font> tractors may be different.
Has oil and filters been changed. Some tractors have screens inside the transmission that can be plugged.
Opening the suction line may be where the air is coming from when you open fill hole.
Welcome to TBN. /forums/images/graemlins/smile.gif
Your tractor may be low on Hydraulic fluid.
If I removed the suction line to the pump on my <font color="orange"> Kubota </font> all the oil would drain out of the transmission. <font color="blue"> NH </font> tractors may be different.
Has oil and filters been changed. Some tractors have screens inside the transmission that can be plugged.
Opening the suction line may be where the air is coming from when you open fill hole.
jinman
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Mudkat, are you sure the air comes out of your reservoir when you open the fill hole, or is it possible the air is rushing in? If you have a suction on the reservoir, that could cause a problem. If there is positive pressure, that should actually make the pump work better. It sounds to me like when you open the suction line, you are allowing air in to relieve the vacuum and then the system works. If you remove the fill plug, is there oil on the dipstick? How about leaving the cap off and operate the hydraulics? If there is a suction in the reservoir, the hydraulics should start to work if the fill cap is off. A vent could be plugged causing the vacuum to form when the tractor cools. As the tractor heats up, that vacuum would also decrease. Either way, a pump running dry will experience a quick death, so be very careful operating/troubleshooting this problem.
How about the hydrstatic transmission? Does the tractor have power? Both the transmission and the hydraulics use the same sump (and sump suction screen) and main filter on the right side of the tractor near the right-rear wheel. Then the fluid splits off and goes through the hydrostatic transmissions charge pump and then to the oil cooler and a separate hydraulic filter on the left side of the tractor.
I'm thinking that if the hydrostatic transmission works, your problem should not be the large filter or sump screen. Of course, if there is a problem in the hydrostatic transmission, that could be what's causing your vacuum at the hydraulic pump inlet line.
Have you talked to your dealer? Did you buy from a dealer or individual?
There are lots of things to check, but you have to keep some oil in that pump or you will soon need a pump whether that was the original problem or not. Good luck finding the problem.
I'm talking about a hydrostatic transmission because you said your tractor was a "35d" model. If it doesn't have a hydrostatic transmission, it's a TC35 without the "d".
How about the hydrstatic transmission? Does the tractor have power? Both the transmission and the hydraulics use the same sump (and sump suction screen) and main filter on the right side of the tractor near the right-rear wheel. Then the fluid splits off and goes through the hydrostatic transmissions charge pump and then to the oil cooler and a separate hydraulic filter on the left side of the tractor.
I'm thinking that if the hydrostatic transmission works, your problem should not be the large filter or sump screen. Of course, if there is a problem in the hydrostatic transmission, that could be what's causing your vacuum at the hydraulic pump inlet line.
Have you talked to your dealer? Did you buy from a dealer or individual?
There are lots of things to check, but you have to keep some oil in that pump or you will soon need a pump whether that was the original problem or not. Good luck finding the problem.
I'm talking about a hydrostatic transmission because you said your tractor was a "35d" model. If it doesn't have a hydrostatic transmission, it's a TC35 without the "d".