question Zetor 3340 Quicke Q720 Loader 1995

[Robertzetor3340]

Hi, I have a newperson question.
Does the (1995) Quicke Q720 Loader have a Free-floating setting
when the buck is on the ground ?

 

[Joachim]

Hi.
This will depend on your control block (front loader control block), but I think yes, it has a floating position to adapt to the ground. At least every front loader I've ever seen has had that.

 

[Robertzetor3340]

Hi.
This will depend on your control block (front loader control block), but I think yes, it has a floating position to adapt to the ground. At least every front loader I've ever seen has had that.

Hi Joachim, Thank you for your reply. Here is a picture of the info tag on the Zetor 3340 Loader Joystick Hydraulic Control Valve.
So the top of the info tag, I believe indicates moving the Joystick toward the front of the Zetor tractor.
Can you or anyone see where there may be a float position for this Joystick Control ?

 

[Robertzetor3340]

Hi Joachim, Thank you for your reply. Here is a picture of the info tag on the Zetor 3340 Loader Joystick Hydraulic Control Valve.
So the top of the info tag, I believe indicates moving the Joystick toward the front of the Zetor tractor.
Can you or anyone see where there may be a float position for this Joystick Control ?

Hi Joachim, I may have the tag upside down. This orientation may be the correct orientation. With that said, using the Loader Joystick I have not been able to see floating to be working so far.

 

[Joachim]

push it this way:

... should work.

 

[Robertzetor3340]

push it this way:
View attachment 773
... should work.

push it this way:
View attachment 773
... should work.

Hi Joachim, Pushing joystick to the right is causing the bucket to curl down only.

 

[Robertzetor3340]

push it this way:
View attachment 773
... should work.

Hi Joachim, Robert here again,

Trying different things with the joystick and by using the right side armrest for support,

I did find by pressing the joystick forward just enough to cause the buck to slowly drop down,

that it would then behave like it is in float mode.

There is only a short space of joystick movement for this free-float-mode to work.

But this is Good News ! it WORKS !!!

 

[Joachim]

What I mean with my arrow at the picture is the symbol on it. Not the direction to move it. There are 5 symbols they you tell in what position what function is given.

 

[Robertzetor3340]

What I mean with my arrow at the picture is the symbol on it. Not the direction to move it. There are 5 symbols they you tell in what position what function is given.

Hi Joachim, Thank you for your reply. Yes, I did not understand the arrow.
So the forward fifth symbol is representing a Float position for the Loader.
But this joystick does not have this Float position in it.
So maybe Zetor just put the same tag on all there tractors even though it may not have this feature.

Looking at the Hydraulic Valve Body out on the Quicke Q720 Loader, there is a Lever valve on the side toward the tractor.
Would anyone know what the function of this lever is ?

 

[Robertzetor3340]

Hi Joachim, Thank you for your reply. Yes, I did not understand the arrow.
So the forward fifth symbol is representing a Float position for the Loader.
But this joystick does not have this Float position in it.
So maybe Zetor just put the same tag on all there tractors even though it may not have this feature.

Looking at the Hydraulic Valve Body out on the Quicke Q720 Loader, there is a Lever valve on the side toward the tractor.
Would anyone know what the function of this lever is ?

Could this lever be a safety for when working under the loader ?

 

[Robertzetor3340]

Hi Joachim and/or anyone,
Could the Joystick cables be out of adjustment causing the trouble of there being no float ?

 

[Robertzetor3340]

Hi Joachim and/or anyone,
Could the Joystick cables be out of adjustment causing the trouble of there being no float ?

Checking out the Up and Down Cable at the Hydraulic Valve Body

I did not see where there may be an adjustment for the Cable.

Pressing the Valve-Pin up/in hard did not produce the wanted Float feature.

The front wheels came off the ground and pulling the Valve-Pin down/out caused the Loader to move up.

So, not finding a Float Feature with this Valve-Pin is very sad.

I am open to any other ideas that anyone may have.

 

[Joachim]

Could this lever be a safety for when working under the loader ?

No! - Safty is only given with a support under the loader or better at hydraulic cylinders.
If its a two way lever, it blocks the pipe - but its no safety. Its only there to use (if closed) the hydraulic at the rear to tip trailers eg.

So the forward fifth symbol is representing a Float position for the Loader.

Yes.

But this joystick does not have this Float position in it.

Thats bad, but possible. The former buyer apparently didn't want to pay extra for this feature.

So maybe Zetor just put the same tag on all there tractors even though it may not have this feature.

Thats not a original Zetor loader. Loaders are alsways third party products. Up to around 2016 it was TracLift/Prima and then Alö eg.. So the Quicke loader at your Zetor is a third party device and the functions it have or not is what the former buyer apparently was willing to pay for.

I did not see where there may be an adjustment for the Cable.

I some cases its at the joystick side adustable, in some other is ther no way to adrjust it. And - dont use for the cable a mineralic oil. Use only a silicon oil there.

If complete pushing forwar the joystick doesnt work for you, have you tried the other way? I some cases the cables are wrong mounted at the joystick and functions are not as the pics on it are saying.

 

[Robertzetor3340]

No! - Safty is only given with a support under the loader or better at hydraulic cylinders.
If its a two way lever, it blocks the pipe - but its no safety. Its only there to use (if closed) the hydraulic at the rear to tip trailers eg.


Yes.


Thats bad, but possible. The former buyer apparently didn't want to pay extra for this feature.


Thats not a original Zetor loader. Loaders are alsways third party products. Up to around 2016 it was TracLift/Prima and then Alö eg.. So the Quicke loader at your Zetor is a third party device and the functions it have or not is what the former buyer apparently was willing to pay for.



I some cases its at the joystick side adustable, in some other is ther no way to adrjust it. And - dont use for the cable a mineralic oil. Use only a silicon oil there.

If complete pushing forwar the joystick doesnt work for you, have you tried the other way? I some cases the cables are wrong mounted at the joystick and functions are not as the pics on it are saying.

Joachim thank you for your very good reply's,
Yesterday at this Hydraulic Valve Body (WALVOIL SDM143/2) I disassembled where the Loader Cable for Up and Down attached to the Hydraulic Valve Body and pushed hard the valve control pin up into the Valve Body all the way and no Float feature detected in that direction. Then next I pulled the valve control-pin down all the way and the Loader moved only upward. Again no Float feature detected.

When reassembling the cable to the Hydraulic Valve Body there is an adjustment there for the cable, as when tightening the two 8mm bolts, they lock the cable in place.

The Joystick has a feature to lock it in the center position, which I did before tightening the two 8mm bolts. This set the cable back to its proper adjustment.

I removed the Rubber-Boot from around the Joystick and because when pressing the Joystick forward it at first releases the Loader to move down with no down pressure being applied. This is a very short area of Joystick movement, but does work as a down Float. This is a Cheat way to use a Float feature, but is very difficult to maintain this Joystick position, as every time the tractor is bumped around this Joystick position lost.

I am looking at finding a way to add something that would help to give a way to feel where this Cheat free-float position is with the Joystick.

Another option I want to look for finding a Hydraulic Valve Body that has the Float feature made into it and what the cost would be for it.

 

[Joachim]

New complete front loader valve with all what you like to have (valve, joystick, cable) will cost around 260-300 Euro I think.
You can take a look at Ebay, there are some listed.

 

[Robertzetor3340]

New complete front loader valve with all what you like to have (valve, joystick, cable) will cost around 260-300 Euro I think.
You can take a look at Ebay, there are some listed.

I have not been able to find one that says with float yet. I found this PDF file about the WALVOIL SDM143/2

 

[Joachim]

Look:

*FK Söhnchen* | WALVOIL Frontladersteuergerät SD5/2 mit Kreuzhebel Seilzugventil 45l/315bar 2500mm WALVOIL Frontladersteuergerät SD5/2 mit Kreuzhebel Seilzugventil 45l/315bar 2500mm

WALVOIL Frontladersteuergerät SD5/2 mit Kreuzhebel Seilzugventil 45l/315bar 2500mm - Technische Spezifikation: Anzahl der Sektionen: 2 Nom. Volumenstrom: 45l/min. Max. Druck: 315 bar Verschraubung:

www.fk-soehnchen.de

One of the first search results - a walvoil with float function as a complete set...

 

[Robertzetor3340]

Look:

*FK Söhnchen* | WALVOIL Frontladersteuergerät SD5/2 mit Kreuzhebel Seilzugventil 45l/315bar 2500mm WALVOIL Frontladersteuergerät SD5/2 mit Kreuzhebel Seilzugventil 45l/315bar 2500mm

WALVOIL Frontladersteuergerät SD5/2 mit Kreuzhebel Seilzugventil 45l/315bar 2500mm - Technische Spezifikation: Anzahl der Sektionen: 2 Nom. Volumenstrom: 45l/min. Max. Druck: 315 bar Verschraubung:

www.fk-soehnchen.de

One of the first search results - a walvoil with float function as a complete set...

It look like it may be to small of capacity for the Zetor 3340 system (I will need to find what the Zetor 3340 needs to have and in English too). In the sdm143a.pdf file on pages 11 and 12 there is mentioned float there. Not sure, but caused me to think maybe it could be out of adjustment with the relief stuff in the Hydraulic SDM143 Valve Body itself. Maybe it has been monkeyed around with by someone before me.

 

[Joachim]

Its only a example - they also have bigger valves.

 

[Robertzetor3340]

Its only a example - they also have bigger valves.

Hi Joachim,
Update, I received email reply from Canimex Hydraulic and they only sell the Walvoil series SDM143,
but did say

"In regards to the SDM143 – it does have the capability to run 4th position float."

So there may be something wrong inside of the SDM143 to why the Spooling Rod is not able to move into the 4th position.
The SDM143A.pdf file shows that it should be there.
I need some more info about this SDM143 Hydraulic Valve Body before I may start to open it up.

 

[Robertzetor3340]

Hi Joachim,
Update, I received email reply from Canimex Hydraulic and they only sell the Walvoil series SDM143,
but did say

"In regards to the SDM143 – it does have the capability to run 4th position float."

So there may be something wrong inside of the SDM143 to why the Spooling Rod is not able to move into the 4th position.
The SDM143A.pdf file shows that it should be there.
I need some more info about this SDM143 Hydraulic Valve Body before I may start to open it up.

Hi Joachim, Update, In studying the SDM143A.pdf file on page 8 at number 3. Spool, talks about two different kits, Kit 8MA and Kit 13.
The Kit 13 is with the 4th Spooling position (Float feature), which then may indicate that I have the Kit 8MA without the float feature.
Maybe I will be able to upgrade to the Kit 13.

 

[Joachim]

Maybe I will be able to upgrade to the Kit 13.

Maybe. I think it should possible.
But this is a question for a hydraulic specialist.

 

[Robertzetor3340]

Hi Joachim,
Update, I received email reply from Canimex Hydraulic and they only sell the Walvoil series SDM143,
but did say

"In regards to the SDM143 – it does have the capability to run 4th position float."

So there may be something wrong inside of the SDM143 to why the Spooling Rod is not able to move into the 4th position.
The SDM143A.pdf file shows that it should be there.
I need some more info about this SDM143 Hydraulic Valve Body before I may start to open it up.

Hi Joachim,
Found out today that it does have float and why it is not working.
Took it apart today and it has had water in it and so rusted up a lot.
I had the remove the Spool Rod out the top of the Valve body
and the Kit 13, that does the Float, is rusted to the Spooling Rod.
I am working on trying to separate them.
If I am unable to cleanup the Kit 13, I can order a new one for about $100.
So good news and bad news, but mostly good news.

 

[Robertzetor3340]

Hi Joachim,
Update, I received email reply from Canimex Hydraulic and they only sell the Walvoil series SDM143,
but did say

"In regards to the SDM143 – it does have the capability to run 4th position float."

So there may be something wrong inside of the SDM143 to why the Spooling Rod is not able to move into the 4th position.
The SDM143A.pdf file shows that it should be there.
I need some more info about this SDM143 Hydraulic Valve Body before I may start to open it up.

Hi Joachim,

Found out today that it does have float and why it is not working.

Took it apart today and it has had water in it and so rusted up a lot.

I had the remove the Spool Rod out the top of the Valve body

and the Kit 13, that does the Float, is rusted to the Spooling Rod.

I am working on trying to separate them.

If I am unable to cleanup the Kit 13, I can order a new one for about $100.

So good news and bad news, but mostly good news.

 

[Joachim]

Ok, that sounds good (the good news ).
Yes, a tractor should have a garage, a dry place for it and not stand in rain and snow. A dry home for costs money but I think over the time less then tractor repair costs and wasted time for.

Be happy - you have find the problem and have a solution for. :like

 

[Renze]

It look like it may be to small of capacity for the Zetor 3340 system

I read 80 liter max flow. Your 3340 will either have a 30 or a 40 liter pump.

 

[Joachim]

The max. flow I know are a 60 L pump... I think 80 litres will be to much for inner valves and it can come to funny effects like in a 5211 with 40 L pump (lifts alone the lift arms when you give more gas)

 

[Robertzetor3340]

Have several Questions:
Zetor 3340 inside the cab, right side, down to the 3-point-hitch and rear-hydraulic control Levers, forward of them there is a turn Lever.
Q1: What is this for/do ? (see picture)

Q2: Have not been able to find info about the 3 point-hitch, which when raising up and down moves only about 3 inches total.
How do I get more up and down 3 point-hitch movement ?

Q3: There is another Lever showing 3 positions “D”, “M”, “P”.
What does this Lever do ? (see picture)

 

[jcataclism]

The lever near your foot (first picture) should allow you to choose the speed of the rear hydraulic lifting - at least it's what I have found here in forums and the manuals , as mine have never worked since I bought it

The second picture shows the level of "resistance" for the rear lifting :
-"P" can be remembered as "POSITION", will try and hold at the same Position - good when you have a very "clean" soil to plow, and also when you need the implement hold firmly in that position, especially for some maintenance;
-"M" can note for "MIDDLE", will try to change its level/height "smoothly", regarding the tractor changes its inclination and the rear implement not - good for instance, when you are plowing in a very rocky soil or not frequently used, so you might have a lot of roots underground;
-"D" can be for "DYNAMIC", as the rear lift/implement will easily adapt to almost every single obstacle or difference of level, good for instance when you have a clear lawn mowing to do and the grass can resist to the scratches from the implement upon it.

 

[jcataclism]

Q2: Have not been able to find info about the 3 point-hitch, which when raising up and down moves only about 3 inches total.
How do I get more up and down 3 point-hitch movement ?

Well, I don't know whether it might be related, but i had a very similar problem in my 7340 when I first bought it (second handed), so I found out there was a loosen screw at the bottom of the lift's lever (the one in the cabin, near the "D-M-P" in your picture), so even I moved it a lot, the other part of the lever/axis would not follow its whole movement, thus only barely moving the lifter.

If you don't find anything like that, another possibility is that you have air "stuck" inside your hydraulic system - maybe even some dirt which came along the fluid while a schedule maintenance -, so it could be preventing any further movements and even damaging sliding components when you use it