For me your description is not complete enough. Is this a new condition with some background leading up to it?
Ok I can give this info thank you it is a glide shift transmission it’s l4200 DT tractor without a mid pto I have the wsm. When I engage the pto the shaft will spin most of the time to my backhoe attachment but when you pull a lever on it the shaft will just stop turning sometime I just drive around then try again eventually it’s turning with full power and I can use the backhoe then I can turn it off and on but the other day I tried to use it and nothing then let it sit 10 minutes moved shaft by hand back and forth started tractor and it took off? I am going to test hydraulic pressure today any help is greatly appreciatedFor me your description is not complete enough. Is this a new condition with some background leading up to it?
A L4200 can have a Glide Shift or manual transmission. You should provide this info.
A L4200 may or may not have a FEL. If you have one, assuming it is a Kubota one, provide the model number i.e. LA681
I do not think the L4200 has a mid pto but some tractors around that size do and they have a mid pto.
It would be helpful if you clarified the presence or absence of a mid pto
Are you saying the pto wont turn but then you talk about a change when moving a backhoe lever.
Is this condition happening when an implement is connected to the pto shaft?
Is this just an observation of the shaft with nothing connected but when the BH is mounted?
Hydraulic issues are complicated and many members avoid the questions which are not very clear.
I cannot find a free WSM which makes it harder to study the L4200 systems
This is a helpful group but you need to be patient. Weekend posts get less attention in my experience as it is only old ones like me who are on line on a nice weekend
Dave
I will check serial number tonight after work and I checked the main hydraulic pressure it was 2275 book shows about 2350 min and 2489 max I shimmed it and now have 2425 psi the pto seems to work now when I try it it’s starts to spin then gradually goes faster and works this takes about 30-45 seconds that still don’t seem right I’m not sure where to connect gauge to the engagement lever I’ll look tonight in my book thank you for your help!
Ok I looked at the pdf I’ll check the pressure there if I can I know there are steel lines right in front of it
It is with independent pto and I cannot remove plug to test the pressure there is there any other way to test if not I’ll have to get couple parts ordered and get back later to you
It is possible with time internal seals leak a little more and pressure drops to the point where engagement is spotty.
Yes ok , fair enough. I do have workshop manual and it says nothing about shimming the relief valve that I can see. I've seen videos of it for different models where valve is in the rear of the tractor but nothing specific to this type. I will have a look this morning and try starting a new post with my issue. Thanks
I am sure its covered in the WSM.
Ah ok yes I did see that in the manual actually. I was specifically trying to find more info on shimming to raise the pressure, but from what I gather you just unscrew relief valve and shim the spring. My adaptor for guage arrived today, so I'll have a go tomorrow. My pto presure was on 250 PSI, then I managed to adjust the regulator and go it to 350 ish and pto still has low power, so I will check pump main pressure and then try and get pto pressure up to 370 PSI I suppose. My biggest fear is pto clutch pack as that looks like a horrible job
Main system pressure is 10X the PTO pressure.Ah ok yes I did see that in the manual actually. I was specifically trying to find more info on shimming to raise the pressure, but from what I gather you just unscrew relief valve and shim the spring. My adaptor for guage arrived today, so I'll have a go tomorrow. My pto presure was on 250 PSI, then I managed to adjust the regulator and go it to 350 ish and pto still has low power, so I will check pump main pressure and then try and get pto pressure up to 370 PSI I suppose. My biggest fear is pto clutch pack as that looks like a horrible job
Ah ok, so the only thing I need to concentrate on is getting pto pressure up to 370? So the only adjustment i have is the allen screw on the regulator and if I can't get that high enough is there not a way of getting the pump higher? That's what my thinking was, if main pump is low then im trying to regulate a low pressure from the start.
