600 Hydraulic Problem

[Hobo,NC]

Hi Gene,
The arms will only rise hydraulically 2". I can manually raise and lower them (slowly) by hand and did so several times, thinking there might be air in the system.
Did not work. I thought of the bent idea but did not see any indication. There was some scoring on the valve as seen in the picture, but no one seems to know why or how it could become marred. This might be a clue, but the valve is not bent.
I'm sure I made all adjustments correctly - 3 times. I do not think the valve should be hitting the top of the piston cylinder
The cover is now back completely assembled on the tractor

the last one i went into.

 

[Hobo,NC]

the last one i went into.

 

[buickman]

Thanks Gene,
Your suggestion of moving the valve forward with a screwdriver was excellent. The arms worked like they should both up and down.
There's hope!
Now do we know what the issue is? What is next?
Sorry, I do not know the significance of the last 2 photos you sent

 

[Hobo,NC]

Thanks Gene,
Your suggestion of moving the valve forward with a screwdriver was excellent. The arms worked like they should both up and down.
There's hope!
Now do we know what the issue is? What is next?
Sorry, I do not know the significance of the last 2 photos you sent

your valve looks different i wonder why.

 

[buickman]

It looks basically the same and is in the same position.
Now that the screwdriver trick worked, can anyone advise to what the issue is or the next step?

 

[Gene in Mi]

I'm headed to the shop in a short while.
I'll be happy to report when I return this afternoon
Thanks so much

It looks basically the same and is in the same position.
Now that the screwdriver trick worked, can anyone advise to what the issue is or the next step?

First it was Hobo who suggested the screwdriver trick.
Now that you know that that valve will control the operation of your lift arms, I suggest you remove the lift cover, again, turn it over and watch how the big lift command lever on the side and the rear lift arms interact with each other as they move. Something is causing the valve to move back to neutral after the lift arms raise two inches. Don’t give up!

 

[Hobo,NC]

I want you to push in on on the draft link use a pry bar where it is connected to the rocker. While pushed in with the position control leaver at the top does the lift come up. By doing this you are moving all the internal linkage forward.

If this works you will need to remove the big rear draft spring and 3 bolt hole retaining plate and add a shim onto the shaft. This shim is a 5/8" washer with a slot cut into it to clear the dowel pin in that area.

i had a shoulder replaced this week so somewhat drugged up.

B

Thread '860 Ford Hydraulic Lift Cover adjustments'

Jan 17, 2020

I made adjustments on hydraulics on position and constant draft on lift cover in past. Position lifts fine but it will not lift in constant draft.
I am going to adjust them again.
My question is this. I procedure in my FO-20 manual but I watched a video of someone making adjustments on a NAA
Ford. He used a half inch rod thru both lift arm pins and on top of draft spring and uses 3/16 draft and 1/4 inch on clearance on control valve. Will this work on my 860. It seams easier than the manual in setting position of control arms.
I did not have control arms an lift control lever set...

• br860
• Replies: 9
• Forum: Ford

A

Thread 'Lift Cover Linkage adjustment woes'

May 7, 2010

The 3PH on my 971 Gold Demo has never worked in the 2 years I've owned it. I finally got around to getting a Tisco rebuild kit (which does not contain the $8 gasket that goes on the end of the lift cylinder under the retainer plate) and I've got it all back together. The Unloading Valve was seriously stuck.
I'm trying to adjust the Draft and Position linkage without the Nuday tools following the I&T Manual procedure. For the Draft adjustment I have a .625" gap where it should be .395". There is not enough adjustment in the barrel nut to correct this gap. For the Position adjustment I have...

• awhtx
• Replies: 8
• Forum: Ford

L

Thread 'Draft control'

Mar 27, 2013

Finally got to drive my tractor around last weekend. 51 8n 12v. Hooked up the Dearborn blade and ran it down the driveway for awhile. Hydraulic lift works great, takes hours for it to lower after shutting off with the heavy blade raised. Only problem is with the draft lever down the 3 pt won"t raise. Now I never tried it without any weight on it. I do plan to take the inspection cover off this weekend and see if it"s leaking from up above before I order any parts. Is the draft control out of adjustment? We do have the jig to adjust everything. Any input is welcome. Thanks

• Lisa K
• Replies: 7
• Forum: Ford 9N, 2N & 8N

 

[Hobo,NC]

I want you to push in on on the draft link use a pry bar where it is connected to the rocker. While pushed in with the position control leaver at the top does the lift come up. By doing this you are moving all the internal linkage forward.

If this works you will need to remove the big rear draft spring and 3 bolt hole retaining plate and add a shim onto the shaft. This shim is a 5/8" washer with a slot cut into it to clear the dowel pin in that area.

i had a shoulder replaced this week so somewhat drugged up.

B

Thread '860 Ford Hydraulic Lift Cover adjustments'

Jan 17, 2020

I made adjustments on hydraulics on position and constant draft on lift cover in past. Position lifts fine but it will not lift in constant draft.
I am going to adjust them again.
My question is this. I procedure in my FO-20 manual but I watched a video of someone making adjustments on a NAA
Ford. He used a half inch rod thru both lift arm pins and on top of draft spring and uses 3/16 draft and 1/4 inch on clearance on control valve. Will this work on my 860. It seams easier than the manual in setting position of control arms.
I did not have control arms an lift control lever set...

• br860
• Replies: 9
• Forum: Ford

A

Thread 'Lift Cover Linkage adjustment woes'

May 7, 2010

The 3PH on my 971 Gold Demo has never worked in the 2 years I've owned it. I finally got around to getting a Tisco rebuild kit (which does not contain the $8 gasket that goes on the end of the lift cylinder under the retainer plate) and I've got it all back together. The Unloading Valve was seriously stuck.
I'm trying to adjust the Draft and Position linkage without the Nuday tools following the I&T Manual procedure. For the Draft adjustment I have a .625" gap where it should be .395". There is not enough adjustment in the barrel nut to correct this gap. For the Position adjustment I have...

• awhtx
• Replies: 8
• Forum: Ford

L

Thread 'Draft control'

Mar 27, 2013

Finally got to drive my tractor around last weekend. 51 8n 12v. Hooked up the Dearborn blade and ran it down the driveway for awhile. Hydraulic lift works great, takes hours for it to lower after shutting off with the heavy blade raised. Only problem is with the draft lever down the 3 pt won"t raise. Now I never tried it without any weight on it. I do plan to take the inspection cover off this weekend and see if it"s leaking from up above before I order any parts. Is the draft control out of adjustment? We do have the jig to adjust everything. Any input is welcome. Thanks

• Lisa K
• Replies: 7
• Forum: Ford 9N, 2N & 8N

 

[buickman]

Thanks Hobo,
I'll give it a try today. And, sorry for not giving you credit for the screwdriver test - it was key.
Good luck with he shoulder

 

[buickman]

I did as you said. I did not have an adequate pry bar, so I disconnected the draw bar and pulled it towards the front of the tractor with the lift lever in the up position. It did exactly what you said it would. The lift arm and the attachment came right up.
Tomorrow I will try the shim idea. The washer is 5/8" diameter or 5/8" thick? If 5/8" in diameter, such a thin shim will make that much difference?
I guess, I'm trying to add spring tension.

 

[Hobo,NC]

5/8" I.D.

"I'm trying to add spring tension"

No you are moving the draft linkage forward taking up for ware and tare.

 

[buickman]

I unscrewed the yoke - 28 turns, removed the spring seat and the tri-angular plate. Made a 5/8" ID washer with slot to accept the pin on the plate and installed. I was able to turn the yoke 24 turns before a lot of resistance was felt. Should I turn the same number as I unscrewed - 28 turns?

 

[Hobo,NC]

I unscrewed the yoke - 28 turns, removed the spring seat and the tri-angular plate. Made a 5/8" ID washer with slot to accept the pin on the plate and installed. I was able to turn the yoke 24 turns before a lot of resistance was felt. Should I turn the same number as I unscrewed - 28 turns?

no

 

[Gene in Mi]

I unscrewed the yoke - 28 turns, removed the spring seat and the tri-angular plate. Made a 5/8" ID washer with slot to accept the pin on the plate and installed. I was able to turn the yoke 24 turns before a lot of resistance was felt. Should I turn the same number as I unscrewed - 28 turns?

The procedure for that adjustment is in the manual and covered in multiple online videos.
Turn until just able to rotate that spring.
You also need to redo the draft and position adjustments now too.

 

[Gene in Mi]

The procedure to adjust that spring is in the manual and covered in multiple videos.
Turn until just able to rotate the spring with little effort.
You also need to redo the draft and position adjustments again now too. That big spring adjustment is the reference that all other adjustments are made from.

 

[buickman]

The cover is fully assembled on the tractor. Hobo has suggested the washer be installed to move he draft linkage forward.
I tightened the yoke 28 turns back to where it was before I installed the washer - No improvement - the lift arms only rise 2"

 

[Sean in PA]

The cover is fully assembled on the tractor. Hobo has suggested the washer be installed to move he draft linkage forward.
I tightened the yoke 28 turns back to where it was before I installed the washer - No improvement - the lift arms only rise 2"

Did you see Hobo's answer to your question on whether you should turn it back the same 28 turns as it took to remove it? His answer was No.

 

[buickman]

Yes, I did. I tried it both ways with the same result

 

[mhb@ufe]

Yes, I did. I tried it both ways with the same result

If you over tighten the yoke it will only affect the draft control as it will require more pressure to push the spring in to activate the draft. Until you figure out why it won't adjust properly, I would not expect it to work.

 

[buickman]

Tomorrow, I start all over again. Ugh!