White 2-105 Hydraulic Problem

TASO

Member
We were round baling with the 2-105 and when we hit the brakes to stop and wrap the bale, the PTO kicks off. We have had to hold the PTO lever when ever we use the brakes to stop the tractor. Any thoughts as to why this is happening and what we should trouble shoot to fix this? Thanks.
 
my 2-85 has been doing that for as long as i remember. when i plant corn with white corn planter with pto hyd fan pump i hook a S hook to the 3pt leaver to keep the pto on
 
If I remember correctly, the PTO on those is designed to shut off if it looses hydraulic pressure (so it isn't accidentally on when you start the tractor). I wonder if your hydraulic pressure is weak or something is messed up in the brakes that is making a sudden and substantial drop in hydraulic pressure.
 
You need to check the pressure at the pto valve on the back of the tractor. Fab up a gage to go inline it should be 240 PSI. Mine was doing this exact thing yours is. I ended up shimming the valve to get the pressure up.
 
My 1975 2-105 has been that way since new , February 1975, dealer was never able to fix it, but I survived, hay mower, spray pump, white corn planter, tied in gear , any thing PTO operated except JD 510 baler. Still use it today.
 
Thanks for the feedback. We found we had a leaking line which caused low fluid level. Repaired line, shimmed the valve also( the spring seemed weak) ,filled up with fluid and fired up tractor. Ran PTO while turning the steering wheel rapidly with the brakes on. No issues, PTO kept running while steering and brakes were used. Hopefully, this is the last of our hydraulic problems with this tractor. Valves on both outlets have been rebuilt, new seals on PTO and pump installed and now this.
 

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