this is long but i'll try not to leave out any of the details. I have experienced complete and sudden 3 point hydraulic failure. 3 point arm have gone absolutely dead. the don't even move 1/4 inch. They worked fine 5 days before when i last used the tractor. Now i have nothing. I expect that something became disconnected so i removed the top plate that the seat is bolted to. I backed out the acorn nut on the outside of the case before i lifted the cover off because thats what my service manual said to do. Inside i found a tube connected to the acorn nut (labled A) that just lays down in the sump of oil. It pivots on the bolt connected to the acorn nut. Should this tube just be laying down in there? It doesn't appear to be connected to anything. There is also a clamp/bracket on the tube (labled B) that i can't figure out where it goes. I cannot seem to pivot the tube up so that i can see the other end because it goes down under the casting and is to long to pivot it up to see the end. I stuck my hand down in the hydo fluid and nuthing is connected to the other end of the tube. Is all this stuff normal? Anyone know what this is and why it's just flopping around in there? And possibly where that clamp goes on and attaches to?[/url]
- Thread starter aquaholic
- Start date
NWMO 901 SOS
Well-known Member
(quoted from post at 06:43:49 07/06/16)
aquaholic,
It looks like the "cover" bolts got put back incorrectly. If you swap the top and bottom bolts on the side nearest the tube, you will be in business with a nut (maybe in the sump ?).
Chris
es, punch it out from other side.(quoted from post at 21:54:26 07/07/16) mine is a little bitr different but not much. assuming the arrow i drew is pointing to where the unloader valve, can i simply knot it out from the other side or can i stick a rod in there from the other side and tap it out with a hammer?
i have not j. can i just reach in there with some long nose pliers and pull that piston out? the ram which i assume is that part that looks like a dog bone id ok. looks kinda like it just flops around up in the cylinder. the piston appears to be shoved the whole way up in the cylinder. i was thinking that while i'm waiting on that gasket kit, i would unbolt that cylinder from the top plate and check those o rings and gasket as well since they appear to be coming with the gasket kit. am i on the right track here?
es, on track. Once cylinder off, you can apply compressed air & blow the piston out, BUT be sure up against a pile of rags or something, so that you don't make a bullet!
Over pressure safety relief is in bottom of sump.
And ram cylinder safety valve & check valve screws in just to left of arrow in picture.
is this part something i can take apart and service? i don't see this part identified in any of my manuals or parts diagrams. the housing is loosely fitting and i can twist it 1/4 inch in either direction very easily. there appears to be some solder on one end of the slot where a screwdriver would go to remove the screw in the top of it.
ee previous post on pump over pressure relief valve. Yours has 'anti-spray' hood over it which is not shown in previous post regarding valve removal. Nothing serviceable & solder on it is 'anti-tamper' device to hopefully prevent someone from altering the factory relief pressure setting.(quoted from post at 07:35:27 07/13/16) is this part something i can take apart and service? i don't see this part identified in any of my manuals or parts diagrams. the housing is loosely fitting and i can twist it 1/4 inch in either direction very easily. there appears to be some solder on one end of the slot where a screwdriver would go to remove the screw in the top of it.
personally would leave it alone. If you cap off the tube going up to top cover & connect a gauge at port on side of that cavity (low& around running board), you could then start engine & it should relieve and blow oil out at the "hood" around it at 2000PSI.
1st off, let me say thank you. i appreciate you guys who hang out on these forums and help us dumbasses. i replaced all the gaskets with the ABC-090 kit. it consists of about 10 o-rings and 5 other misc gaskets and even a leather gasket. while in there i cleaned everything with brake clean. reassembled it all and my 3 point works perfectly again. i learned alot of terminology and can now identify 90+ percent of the parts in there. i needed the old girl back and now she's back discin, plowin and sickle mowin. yeehaa.
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