190xt won't lift disc mower

Settle down boys, it's Friday, and approaching "beer thirty" . . . .

allis/cattle wrote: where is this flow divider???

The flow divider is on the back of the pump.

Just to clarify, we're talking about a 3 point mounted, folding disc mower and not a drawbar mounted machine correct? This was my assumption when I said you might be over loading a little. Someone earlier made a comment about a 12 foot mower which has to be drawbar mounted and raised with a remote so I just want to clarify which machine we're discussing.

Doc and a few others have always been very direct. Think of it like this....... When I go to my physical doctor and he chews my ass for doing something stupid, well I may be offended at first but in the end he's right.

It was pure ignorance, and I don't mean that as a nasty comment, that you turned up the relief pressure without putting a gauge on first. You'll end up splitting your pump or splitting the new pump if you forget it was messed with. Myself, and maybe it's just me, but I don't think anyone needs to apologize. Just move on and get the problem figured out.

There is a lot of ignorance out there, sometimes with myself too. I've talked to more than one person who had overhauled their own engine. They got the brand new kit. Slapped it in. Did no checks on clearances. Didn't even bother to thoroughly wash each piston and sleeve and give them the white glove treatment before going in. I just don't even bother telling them because it's too late and the damage is done. Now if I talk to them again and they wonder why it smokes like a freight train two years later I ask them what preparation they did to the kit before installation. They'll say .......what do you mean? That's why there are professionals who in the long run will save you money. It's alright to learn but not so much when you need to go right now.

Heck I built my own waterway once. Only once then when we hired a guy this spring to redo what I and Dad did, well you wonder, for the money why did we waste our time. We caused washouts that weren't there before....... yada yada yada.......... anyway, you get the drift.

With engine running above 1800 RPM, there should be 2,200 to 2,400 psi while you hold a lever fully engaged, making the hydraulics work. If your power steering seems normal, I'd suspect the relief valve has failed on the hydraulic stack. You could swap the Traction Booster relief cartridge (front of valve stack and easy to access) for the main relief cartridge(rear of valve stack and miserable to access) and adjust it up to correct pressure spec for a quick fix.

I may have found the culprit. On the first piece of the stack, the valve that has the acorn nut with the adjustment screw under it, there is an arm that is supposed to sit against the valve on the back side. That arm is flipped down.

How far is the plunger supposed to stick out the back of the relief valve? Mine is sticking out about 1 1/2 in.

Maybe a good point, never had a 190XT, just the 185 and 175 and down. 

another

I switched the cartridges, no change

The relief cartridge is always where to start repairs, as it is easy and inexpensive to rebuild. Usually the Traction Booster cartridge is good, as it isn't used as much as the main relief valve, so it can be used for testing. I always install a new seal kit in an existing cartridge to rebuild it. After that, if the rebuilt cartridge won't adjust to proper pressure, the hydraulic pump is the next logical component to explore. You tractor is of the age it should be a triple stacked pump, with one section devoted to lifting the hitch and implements. Good cartridge?? then there must be an internal pump problem.

Traction Booster cartridge isn't that much lower....only about 2,000 to 2,100 psi. Should try to adjust it anyway, just to see what happens.

I went a full turn in, no change. I moved back out. I have a guy coming today to work on a baler, he is also an allis mechanic so im going to have him check it out. Thanks for all the help. Ill let you guys know what ends up being the problem.

Any AGCO Dealership that used to be an Allis-Chalmers Dealership, probably has a seal kit for the relief valve on hand, and in 30 minutes or less could reseal it and adjust the pressure setting using another tractor.