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Discussion Starter #1
After tilling the garden I tried to stop the PTO but tiller kept turning. Tried the PTO switch several times but no luck. Shut tractor off and switched lever to mid PTO, started back up, now the rear PTO stopped but the mid PTO is running with PTO switch off. With the switch on the tractor does shutdown if I get off the seat. Took panel apart and checked switch with meter and checks good.

Any ideas on what to check next
 

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I have no idea as to your problem, sorry.
But welcome to GTT Hemmstutz.
 

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I know you said you checked it but my bet would still be the switch.If you will start the tractor and cut the pto switch off if you can without hopping off unplug the pto switch and see if it cuts off. If so then it's probably the switch if not then there is possibly a short somewhere.

This test is assuming the switch is normally "open" when the pto is disengaged. More than likely this is the case but without the schematic then idk. If the switch is normally "closed" then it shouldn't change anything. I'll edit or post another reply depending on when if I can dig up the schematic for the thing.
 

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The PTO switch (if turned on) should prevent the tractor from starting. I'm thinking the problem is the hydraulic solenoid valve is stuck somehow.
 

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I would check to see if there is power at the solenoid when the PTO switch is off. If there is then I would guess you have a relay stuck of some kind of short in the switch. If there is no power to the solenoid and it continues to run than I would guess that the solenoid is stuck open.

You will be iterated in section 27 part 52 below

MP38954________UN06NOV06.jpg

TRANSAXLE HOUSING AND REAR COVER
CartkeyPART NO.PART NAMEQTYSERIAL NO.REMARKS
1LVA802797Housing Kit1(A) (B) (INCLUDES PARTS MAR KED (C)), (SUB FOR LVA801875)
2LVU800980Pipe1(C) BREATHER
3LVU800508Bearing1(C)
4CH17285Stud1(C)
5R101509Bearing1(C)
6M800460Stud1(C)
7LVU800932Stud1(C)
8LVU802919Gasket1CENTER PLATE (NOT INCLUDED IN KIT), (SUB FOR LVU802919)
9M807387Stud5
10M806040Seal1(C)
CartkeyPART NO.PART NAMEQTYSERIAL NO.REMARKS
11LVU800930Seal1(C)
12CH16469Pin2(C)
13LVU800931Stud1(C)
14M802301Needle Bearing1(C)
15LVU800628Stud2(C)
16LVU800797Plate1(C)
1719M7865Bolt2(C)
18LVU800799Gasket1SIDE COVER (NOT INCLUDED IN KIT)
19LVU800479Stud1(C)
20CH19997Packing2
CartkeyPART NO.PART NAMEQTYSERIAL NO.REMARKS
21LVU800802Pipe1
22LVA801011Kit1SIDE COVER
23M807387Stud3
2415H559Pipe Plug11/4"
25M806044Bushing1
26LVU800801Gasket1
27LVA801876Kit1PTO VALVE CASE
28CH10568Packing1
29M806057Plug1
30PT13744Plug1
CartkeyPART NO.PART NAMEQTYSERIAL NO.REMARKS
31M89128Bolt2
32CH19085Bolt2
3314M7273Nut5M8
3412M7065Lock Washer58 mm
35LVU800478Stud2(C)
36CH18386Bolt24
37M807387Stud5
38M802255Pin10
39LVU800462Bolt1
40M808459Gasket1
CartkeyPART NO.PART NAMEQTYSERIAL NO.REMARKS
41LVA802798Cover Kit1(A) (B) REAR COVER, (SUB FOR LVA801010)
42LVU802920Gasket1(NOT INCLUDED IN KIT), (SUB FOR LVU800800)
4334H327Spring Pin15/16" X 1"
44CH16469Pin2
45R140036Plate1SIGHT PLUG
46R140037Gauge1
47AM881425Pressure Relief Valve1PTO
48M805974Shim1
49M806205Shim1
50CH10569Packing1
CartkeyPART NO.PART NAMEQTYSERIAL NO.REMARKS
51M808469Valve1
52LVU800865Solenoid1PTO
..LVA802796Housing Kit1(A) TRANSAXLE HOUSING (INCLU DES PARTS MARKED (B) AND LVU80 3048 SHAFT AND CH11550 BEARING )
(A) WHEN REPLACING FOR THE FIRST TIME, REFER TO DTAC SOLUTION 70105.
 

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Discussion Starter #6
I unhooked the connector going to the solenoid and had 0VDC at connector with PTO off. Turned switch to on and had 14VDC. I took apart the solenoid and checked the spool, but nothing looked wrong with it. Maybe I will replace the solenoid and try that. Hope it's nothing more serious though!
 

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Hemms that sounds right. I doubt the solenoid is bad. Lemme take another look there may be a relay somewhere stuck open my bet is relay or switch if the solenoid looks good. Check the relay noted in this diagram if you can find it :p My bet is the relay is bad if the switch is ok.


PU02890________UN10MAY10.jpg



key PART NO. PART NAME QTY SERIAL NO. REMARKS
1 LVU22742 Bracket 1 RELAY MOUNTING
2 LVA16573 Wiring Harness 1 PTO CUTOUT
3 LVA13729 Relay 2 SEALED, SPDT, 40A NO, 30A
4 19M7640 Cap Screw 2 M5 X 12
5 14M7375 Flange Nut 2 M5
6 19M7560 Cap Screw 1 M6 X 16
7 14M7303 Flange Nut 1 M6
8 R105388 Tie Band 14
 

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A relay can't be bad if there was voltage at the connector when turned on, no voltage when turned off. The electrical side of the system seems to be ok.
 

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Good point. I'm bad about throwing things out there without a full schematic. Diesel does make a good point. You're probably OK electrically it's probably on the hydro side of it now which I can't help with as I don't know really anything about hydros.
 

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A relay can't be bad if there was voltage at the connector when turned on, no voltage when turned off. The electrical side of the system seems to be ok.
the relay could still be bad

if he is checking the control side of the relay coming from the switch which is reading correct.
BUT
the load side of the relay could be stuck in the closed position (this could happen if the contacts weld together and do not release when de-energized).

check voltage on the load side of the relay to to verify it is opening when switch is off.
 

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The way I understood it was he checked for voltage at the PTO solenoid connector. :unknown: If that's true it rules out the entire electrical system as the problem.
 

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The way I understood it was he checked for voltage at the PTO solenoid connector. :unknown: If that's true it rules out the entire electrical system as the problem.
yes if checked at the solenoid then electrical would be OK.
 

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Discussion Starter #13
Yes I checked at solenoid connector, and all checked good. I went to local Deere dealer and talked to service. We both came to same conclusion that solenoid is stuck. I ordered new solenoid won't get it until Monday afternoon. Will update when installed. Just hope that is the problem. $142.00 for solenoid
 

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Discussion Starter #14
Well I replaced the solenoid with a new one but PTO still stays running. Ordered a technical manual, maybe that will help.
 
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