White 2-105 PTO Disengaging

smokydiesel · Apr 3, 2015

I have a White 2-105 tractor with the Perkins diesel. The problem I am having is the the PTO will drop out intermitintly when Im baling or running the discbine. It usually does it when I turn or hit the brakes. I have checked the pressure at the remotes with a gage and its in spec. I have also checked the pressure while turning the steering and pumping the brakes with the PTO engaged . The pressure seems constant with out any drop. I also took the PTO valve apart to make sure nothing was broken inside. There is an adjusting screw on the bottom of the said valve but I cant find any info on what it changes. Any help would be appreciated. Thanks

Lee Wegner · Apr 3, 2015

Priority valve is probably sticking it's the valve mounted under the hyd pump.

smokydiesel · Apr 3, 2015

Thank you for your reply. Do I need to just dissassemble the valve and look for anything obviosly wrong or is thier something I should be specifically looking out for.

Thanks
Again!

J. Schwiebert · Apr 3, 2015

Will the detent hold it in position? Does the tractor have a cab? If so I have seen where there is interference between the cab and the linkage.

smokydiesel · Apr 3, 2015

(quoted from post at 09:58:55 04/03/15) Will the detent hold it in position? Does the tractor have a cab? If so I have seen where there is interference between the cab and the linkage.

It will usually stay in say 99% of the time but a couple times a day while baling it will jump out. Yes it has a cab but I don't see anything hanging up the linkage

2-stroke DD · Apr 3, 2015

The pressure for the brakes and pto is controlled by the pressure reducing valve in the valve stack below the pump. The pressure for the brakes and pto is only supposed to be 240 psi . To check it Tee into the pressure line going to the pto valve then turn the pto on and pump the brakes to see if the pressure stays constant. If not you will need to check the pressure reducing valve if the pressure is low you can shim the valve. White used two different valves one has a big spring in it the other has a smaller spring and is two pieces and can be screwed apart. The adjustment screw on the bottom of the pto valve is used to set the spring pressure to give you a better feel when feathering the pto in. Also like J. said cab interference can cause a problem. If you take the pto valve off there is a small detent ball and o-ring behind it make sure that is all ok.

bison · Apr 3, 2015

(quoted from post at 11:03:16 04/03/15)

(quoted from post at 09:58:55 04/03/15) Will the detent hold it in position? Does the tractor have a cab? If so I have seen where there is interference between the cab and the linkage.

Click to expand...

It will usually stay in say 99% of the time but a couple times a day while baling it will jump out. Yes it has a cab but I don't see anything hanging up the linkage

believe the detent ball is held engaged in the spool with a small piston and hydr pressure.
Maybe the 0 ring seal on that piston is worn.

I think the former style valve with a detent ball and spring are better than the updated valve with the piston.
I have had intermittent loss of steering with the detent spring style valve but never had the PTO jump into neutral.
Those earlier valves have no adjuster bolt on the bottom either.

J. Schwiebert · Apr 3, 2015

Like Dd said, we had a customer with a 2-85 with the same problem. His cab mounts were worn enough the cab would make contact with the linkage rod and kick it out of gear.

smokydiesel · Apr 3, 2015

(quoted from post at 13:39:18 04/03/15) Like Dd said, we had a customer with a 2-85 with the same problem. His cab mounts were worn enough the cab would make contact with the linkage rod and kick it out of gear.

I get it now. I'll take a look at all of these and post back the results. Thank you guys.

OLWHDA · Apr 3, 2015

My 75 2-105 has been checked, rechecked, and when the PTO is used mowing hay, on brush cutter, esp anytime the brakes are used, it is
locked in gear with a bunge cord, spring, or piece of wire, and yes it has a cab.

smokydiesel · Apr 16, 2015

(quoted from post at 11:47:18 04/03/15) The pressure for the brakes and pto is controlled by the pressure reducing valve in the valve stack below the pump. The pressure for the brakes and pto is only supposed to be 240 psi . To check it Tee into the pressure line going to the pto valve then turn the pto on and pump the brakes to see if the pressure stays constant. If not you will need to check the pressure reducing valve if the pressure is low you can shim the valve. White used two different valves one has a big spring in it the other has a smaller spring and is two pieces and can be screwed apart. The adjustment screw on the bottom of the pto valve is used to set the spring pressure to give you a better feel when feathering the pto in. Also like J. said cab interference can cause a problem. If you take the pto valve off there is a small detent ball and o-ring behind it make sure that is all ok.

So I've checked the cab mounts they seem pretty good no movement. No interference with the cab and linkage that I can see. I took the PTO valve off and checked the detent ball and oring looks good and clean. I did find that the pressure is only 180 going into the PTO valve. I tried putting an additional 1/16 shim under the pressure reducing valve spring but it didn't make any noticeable difference. The pressure at the remotes is 2300. Do I need to add more shim to the spring or is thier something else I should be checking???

smokydiesel · Apr 16, 2015

Just to clarify my reducing valve has the single large spring arrangement. Thank you.

White 2-105 PTO Disengaging

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