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Mighty D19 TB stuck?
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captaindana View Drop Down
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Joined: 14 Sep 2009
Location: Fort Plain, NY
Points: 2459 		Post Options Post Options   Thanks (0) Thanks(0)   Quote captaindana Quote  Post ReplyReply Direct Link To This Post Topic: Mighty D19 TB stuck?
    Posted: 01 Feb 2024 at 6:59pm
Guys I’ve had this tractor 23 years and the rear lift arms have always been stuck. I have freed up a few 185’s 175’s tb valves in the past. I’ve studied my op and service manuals and they don’t point out which spool….

Thanks if I know which spool I’ll be good. Dana
Blue Skies and Tail Winds
                          Dana
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DiyDave View Drop Down
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 51651 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 01 Feb 2024 at 8:58pm
IIRR, its the one with the handle bent down the most, closest to the seat.  Ours had the valve bank on the other side, so I may be very wrong...Wink
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captaindana View Drop Down
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Joined: 14 Sep 2009
Location: Fort Plain, NY
Points: 2459 		Post Options Post Options   Thanks (0) Thanks(0)   Quote captaindana Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2024 at 4:14am
I remover the lift arm handle twenty some years ago when this was my “big” tractor.
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                          Dana
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20479 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 2024 at 8:32am
Spool closest to the seat is for the lift arms. Push spool IN for lowering. Traction Booster has been neutered and does nothing on this tractor. My gut feeling is on a snap-coupler D-19 tractor, when the engine is throttled up, the lift arms will ALWAYS raise to the top when they aren't connected to an implement. This would be especially true with a 10-12 GPM from crankshaft driven pump. There is a certain amount of back pressure within the hydraulic valve body and this will make the empty lift arms raise by themselves. Just the way it probably is.

Edited by DrAllis - 02 Feb 2024 at 9:14am
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