Hudraulic will not lift to top

[tagew]

Hello, I have a little problem with my 6341, the hydraulic will not lift to the top. I have the DMP-lever in P position and I have also checked the oil. I seems to be the last a little bit faster part of the lifting taht will not come up.
Anybody who have an idea what it could be?

Best regards Tage W.

 

[treaney]

Hello, I have a little problem with my 6341, the hydraulic will not lift to the top. I have the DMP-lever in P position and I have also checked the oil. I seems to be the last a little bit faster part of the lifting taht will not come up.[/]Anybody who have an idea what it could be?

Best regards Tage W.

I don't understand the sentence in bold above?

Is there a difference whether the lift arms are loaded or not?

 

[tagew]

Ok, I have to explain a little bit more if I found the right words, my english are not so good. On my earlier 6245 and also on my 6341 there will be when I take the lever up, the last little bit (about 1 inch) on the lever will give a little bit faster liftning of hydraulic arms for the last, maybe 4-5 inches in the outher end of the arms. That will also attach the hitch for the trailer and it is that last upper bit of liftning that not will come up now.
It is not any different if I have anything in the arms or not.
Now we have cold weather -5 to -10, maybe there could be a small drip of water that has been to ice or any other dirt in the valve.
Best regards Tage W.

 

[treaney]

Your English is fine!

Hmmm...from what you describe it does not seem to be a hydraulic problem in that you have most of your lift arm movement. If it was hydraulic then it would be all or nothing.

Could there be a mechnaical blockage that is preventing the pick up hitch from latching? e.g. an obstruction caught in the hitch mechanism.

 

[tagew]

I can lift the arms to its upper level by hand so they are not blocked mecanically.
Now I have the tractor in a warmgarage in +12 and will see tomorrow what happend.
The lever is working properly and the links looking good but when I put the lever to down position I have about 2 inch to put down the lever when the arms already are down.
Maybe the lever has rotated on the axle into the tractorbody.
I think I have to loose the lever from the axle an rotate it a little bit by hand and see what happend. I dont know if there are splines or how the lever are locked on the axle into the body.

Best regards from Aaland Islands in Finland
Tage W.

 

[hogi]

Dear Tage

I believe that you have same problem that I have now with my 5245. 3-point hitch lever bolt (where it goes through top cover of rear axle) has loosened and you must tighten it and adjust it again. If you continue using hydraulics soon your first SCV will not work to forward position (just happened in our 5245).

If you don't understand what I'm trying to say and you can speak finnish (I know that you are Finn but you are living in land...) call to Setka-Saku, www.trv.fi. He knows what you should do to fix that problem.

Anyway, I belive that there isn't anything serious in your tractor.

 

[tagew]

Thank you Hogi, sorry but I cant speak and understand finnish, only swedish and a little bit of english.
It would be nice to understand finnish but I can only a few words, I was reading finnish only one year at school for about
33 years ago.
"If you continue using hydraulics soon your first SCV will not work to forward position (just happened in our 5245)."[/]
Can you explain that a little more to me.
I was thinking of TRV but I decided to try with this forum first.
If you have an explanation for me I think I can fix the problem.

Best regards
Tage Wilhelms

 

[tagew]

Hello again, it was not anything with temperature because it was the same problem this morning in warmgarage.
I also removed the links wich go to the lever in cabin so I could rotate the axle into the body "free".
It isnt possible to rotate the axle more than the lever can do in those space.
The lever are fitted to axle with splines wich are possible to mount only in one way (one spline removed).
My workshop manual and spareparts catalog arent giving me any idea, can someone else give me a good idea?

Best regards
Tage W.

 

[Renze]

Maybe a roller has come off the position mechanism inside. It operates by two half moon shaped curves on which each of them runs a roller. just an idea ??

 

[tagew]

Yes Renze, I also was thinking of something like that. I havent ever done a job like this on Zetor but one time I changed an wheel in the gearbox of a Valmet 361.
Does the cylinder and everything comes with the cover if I take that away, I mean is that a part of its own so I can take it away an put it on a bench. Of course I need to take all connections away from outside first, maybe I need to lift the cabin.

Best regards Tage W

 

[Renze]

When we replaced the bent lever inside the hitch cover, we could just unscrew th bolts from the cab panel on which the drivers seat is mounted. Then i pulled the whole stuff up by attaching a rope to the seat and to the front cab handles, to hold it up.

i left all levers attached to the hitch cover and just took the rubber top off them. You can easily de-tach a ball joint of the small lever of the flow control after you tilt the floor panel with chair up forward.

Then remove about 8 ?? M16 bolts and you can lift the heavy (80 kg ??) lifting cover up with 2 or more people (or a workshop lifter) The hitch including controls and lifting cylinder will come off. When you put it back, dont forget to put a new O-ring between the main transmission housing and the lifting cover.

 

[tagew]

Thanks Renze, but on the 6341 thera are links between the levers and the axle into the body so it is easy to loose those links.
I talked to Bengt-Erik on Moto Check today and he said the problem was a "stopping screw" on the valve.
Sometimes that screw falls down to the hydraulic pump and he has fond it down there a few times.
So I have to take of the cover and see if I found something, I think I would take some pictures with my digital camera under the work, maybe it can be useful for someone or me again.
Maybe i can start with this work next week, I come back when I know anything more.

Best regards from Tage Wilhelms on Aaland Islands
-5 and about 10 to 15 cm snow.

 

[tagew]

Now the problem are fixed
It was the "stopping screw", a 6 mm bolt about 15 - 20 mm length. There was only about one and a half turn, then it should dropped down into rear axle and what had happen if it had I dont know.
Now I put on a little "Loctite" when I put the bolt back and after replacing the cover with all hydraulic on the rear axle, everything works properly again.
Many thanks to Bengt-Erik on MotoCheck for his tips.
If someone has same problem I have some pictures, if someone want the picture please let me know, and I will send them.

Best Regards Tage w.

 

[6245]

Hello Dear Tage W. I would like to get photos you have taken from repair project.Ihave 6245,and I will next spring put new o-ring to hydraulic piston.How is the floor taken off,that you can reach the hyraulic cover?My tractor is year 1989 model.
I live in west Finland.
Thaks in advance. P.M.

 

[tagew]

Ok, I will send you the pictures in a few days, now Im at work and I dont know if I can do it in the evening. Ill send them at your e-mail.
I cant say if it are the same on 6245, my tractor are a 6341 and when I had 6245, I didnt need to do this job.
I had to remove the seat, the rubber floor and then I could remove the metalfloor under the seat. I also had to remove the lowest part from the back of the cabin.
Then you can loose all af the hydraulic hoses and even the cover.
Of course you need to take of the hydraulic arms and the link from Zetormatic to the upper point of 3 pt. hitch.
You need to lift the cover up about 10-15 cm, so you need room for that and it is real heavy maybe 80 kg. So you need an engine crane or another person to help , if you not are a very strong person.

Best regards Tage W.