I read back to one of your earlier post. you said the pump sounds like it was trying to work. Could something else be locked up. maybe the left side gearbox or a wheel bearing. I dont know why a break would lock on one side but the manual sugests checking it. ?? Mike
I can assure you that it is not the brake so we can rule that out. I swapped the relief valves right to left and the problem stayed with the left side so I can't see it being that. The unit will move and if you are patient, it will grab and you will propulsion on both sides for a quick spirt so I don't think it is a wheel bearing. I shoud hear back today on the drive motor. I am thinking that if it is not the drive motor that perhaps I have a plugged line running to the left side. Just my luck that I tear the thing apart and found out that all I had to do was to replace a hose. I will keep you posted.
I really doubt its a hose. It sounds more like the motor with the way you describe it.
Well I am being told that it is not the drive motor either. So, the problem is not the pump. not the drive motor, not the chain or sprocket. I will start putting everything back together and checking the hoses. If I can not find anything in the hoses then I guess I have no choice but to take it to the dealer for repair.
Gear box between the Hydraulic motor and the sprockets ? Can you turn the wheels freely with the hydraulic motor out? This may have already been covered earlier. A sheared key will catch somtimes like you described earlier. Just some thougts. Mike
With the drive motor out the wheels do spin freely. However, since I have the motor out, how would access where this shear pin is located at just to make sure. Another thought, if the pin sheared, would I lose propulsion in both directions or just one way?
You should lose drive in both directions. However a break of this sort can have rough edges and hold (bind or jamb up ) in one direction but not in the other for a short period of time b4 it strips completely out.
https://webparts.pvassociates.net/cnh/main.php
I went to new Hollands parts diagrams to look at the Final drive. I see several keys on shafts where gears and sprockets mount. Thats what I was refering to that may be sheared or broke. I dont think there is a Shear key/pin that is made to shear like you have on some equipment. The ones that are made to shear as a safety when something is over loaded. If your Hydraulic motor and your hydrostatic motor check out ok It has to be between the hydraulic motor and the wheels.
I pulled the cover and looked at the chain case. Everything appears to be fine and is free spinning. The chain is tight and is moving as it should. With that said, could it still be something in the chain case? If anything sheared I would have thought the chain would not be moving as it should.
Put the machine up against a pile of dirt and try to spin the tires while observing the chain ccase to see what is turning and what is not.
The unit is torn down with the pump and drove motor out. The wheels will not spin when under load.....that is the whole problem. Even with the pump and motor in place and wheels off of the ground the wheels still do not drive.
Ok then can you get some sort of tool in place of the motor to turn the final drives? chain the wheel still and see if you can slip anthing in the final drive. I the wheel won't turn when its off the ground the drive must be badly stripped and should slip vary easy.
When I worked as a printer and a drive line locked up we started at one end and started wiggling shafts back and forth. There is usually a little play in both directions. Just try to follow it thru the drive line until you find what wont move at all.
I don't believe that there is a true gearbox design on this unit. The drive motor shaft end is splined or geared that drives the main sprocket. This sprocket drives another smaller sprocket with the chain attached. Also remember that this area serves as the only hydraulic reservoir that there is. The T idea is what I should have done to begin with but the pump and motor have checked out fine. This is what leads me to belive that I perhaps have a line that is clogged.
It would be good to take the line all off one at a time to make sure their clear.Then you will know theyre clear.and hopfully find a clog. I did forget that this was a unit that shared the chain case. You will find the problem. Never let the machine win. Mike
No worries....I wil win. I may be slow...but I will win.
Thats the sort of enthusiasm we wan to see around here!!! Don't let it beat you.
UPDATE: So now I have the unit at a local repair shop. The same shop that looked at the pump and the drive motor seperately and told me that nothing was wrong. After I got the units back, I put the thing back together in order to move it from behind the barn to around front where the guy could pick it up....it still drives on one side. He has had it about two weeks and he calls me over the weekend and tells me that he thinks it is the drive motor. He tells me that he is driving it out to a repair shop that works on hydraulic pumps and motors (the same shop that rebuilt the boom pump about 2 years ago for me). He says that they tell him the repair could be anywhere from $600 to $1300. He wants to provide the money up front for the repari. So now my question is am I out of line for calling this guy out? I mean he has already looked at the motor and told me nothing is wrong and I paid him $25 for that. So after getting the drive motor back I waisted my labor to put the motor back in, paid him to come pick the unit up, paid him to again examine the pump and the motor and pull the motor, which I already had pulled once. If he did not have my unit I would just run the drive motor out myslef but he has my machine so my hands are tied?
I wouldn't be happy about it either... I'd bet its just seals, a seal kit can't be more than $100. As he has the machine he more or less has you by the uum you know!
