200 allis hydraulic pto problem

Clarify.......The PTO "brake" while connected to the hay cutter might work all day or might not ??  In other words, the PTO clutch always pulls a load just fine ??     The power steering always works well, but the 3-point lift is SLOW even at FULL THROTTLE  ??  Do the hydraulics lift the hay cutter fast ??   Is this a 540/1000 PTO equipped tractor ???

To get the lift arms to move up it REQUIRES the engine to be throttled up probably to 1500 or more RPM and the faster the engine runs, the faster it will lift. This is NORMAL and the remote outlets also operate in the same manner.  I asked if the PTO was 540/1000 RPM and you didn't answer.    The PTO lever to the right of the seat has THREE positions: down is OFF with brake.....UP is fully engaged and could kill the engine if loaded heavily........middle is COAST which may spin and pull a very light load.  The fact that the PTO brake may not be working doesn't keep the PTO from pulling a load and performing just fine. There are many that the PTO brake may not work and the tractor is regularly used on PTO jobs. I question whether or not you are fully pulling up on the PTO lever fully OR does the PTO seem to quit turning under a heavy load?? which could mean the foot clutch is slipping.  Does the foot clutch pedal have ANY free-play ?? should be a minimum  of two inches of free-play.

I don't know what you are capable of, in terms of diagnosis or repair work. Yes, if the foot clutch was slipping, it will affect ground speed, but can you notice it ?? I would. I think to eliminate the foot clutch as a possible issue (it still needs 2 inches of clutch pedal free-play) you need to set both brakes hard. With the engine already warmed up, place the Power Director lever in HIGH range. Now shift the transmission into 8th speed. While holding the clutch pedal down, throttle the engine up to 2,000 RPM+. Let up on the clutch pedal fully and the engine should stall.  Quickly re-start the engine to establish oil pressure for the turbocharger. If this test stalled the engine, the foot clutch isn't your problem. If it doesn't stall the engine, you have a foot clutch problem. Again, I cannot stress enough the importance of 2 inches minimum of clutch pedal free-play.  The PTO hydraulic clutch gets its oil pressure from the same circuit that operates the Power Director clutch. You're not complaining of Power Director clutch problems, but a pressure check of that part of the tractors hydraulics would be in order to verify proper numbers. Are you SURE the PTO lever remains fully UP when this slippage problem occurs?? Only you can verify this while sitting in the seat. There is a "detent" that is supossed to keep the PTO lever in the fully up and fully down positions. If this detent wasn't working, the lever wouldn't stay fully up for sure. Again, this is on you to figure out. No one else can do it for you.

A good place to start.   EDIT:  Get a 500 psi gauge and get tapped into one of the two allen head plugs on the side of the Power Director valve. Needs to be 300 psi minimum in both LOW and HIGH ranges and this same pressure makes the PTO clutch work.

Edited by DrAllis - 19 Jun 2023 at 6:03pm

Grab the PTO shaft and try and turn it. If it turns really easy, the coupling has disengaged. If it turns with some effort the coupling is still connected.  BUT, it doesn't fix itself and you are complaining of works sometimes/doesn't work sometimes. And that would have to be a separate problem with the PTO clutch or it's hydraulics..

Snap ring has came out of it's Grove in PTO clutch. PTO clutch housing has to come off.                   MACK