Kubota L4740 PTO, Check the pressure

[Kubota 2007]

Seals look great, I'll get back to you on Clutch measurements.

Clutch OD 3.547
ID 2.342

 

[Kubota 2007]

Year of manual is Feb 2015 and it is for all newer GL40's.

According to the Kubota's parts website it looks like L4740-3 and smaller use 6 clutches/steels in the clutch pack, while the L5240-3 and larger use 7. I'm wondering if you could have used the 7 clutch/steel clutch pack to get more torque capability.

Do you think the HST requires higher pressure to compensate for the lower pressure when moving? How much does it drop when moving and does it ever recover?

What is the published date of your manual?

My manual is 2007 and only gives one pressure reading for Gear,GST and HST. I set mine at 350psi, then road around making sure fluid was up to temp. Pressure dropped to 310psi but quickly recovered to 345psi when maintaining a steady pedal. I called dealer today tech and they are looking to see if any updates have been published using my serial number. If Kubota had a service bulletin I would never know, it makes sense to increase pressure on a HST Model

 

[newbury]

It's been noted on TBN frequently that new Kubotas come from the dealer with the pressure set low.

 

[moship]

Newbury,

Would you be so kind to direct me to a post or three discussing low PTO pressure? I'd like to read more about it and learn why they checked it in the first place.

Thanks

 

[moship]

Clutch OD 3.547
ID 2.342

Thanks for the dimensions. They are smaller than anticipated.

 

[Kubota 2007]

Kubota Technical Dept got back to me today, the pressures listed in my repair manual are correct, the higher pressure's listed are for the newer tractor's. I have mine set at 350psi.

 

[newbury]

Newbury,

Would you be so kind to direct me to a post or three discussing low PTO pressure? I'd like to read more about it and learn why they checked it in the first place.

Thanks

http://www.tractorbynet.com/forums/kubota-owning-operating/162507-low-hydraulic-fluid.html
http://www.tractorbynet.com/forums/kubota-owning-operating/199241-l3130-hydraulic-pressure.html
http://www.tractorbynet.com/forums/kubota-owning-operating/310465-you-got-me-under-pressure.html

There is a feature on the net called google.

for example put this into google:
hydraulic pressure low kubota dealer site: and then put in the site tractorbynet.
If I actually put it in the example it's transformed to a url and I tried editing it 5 times.

 

[moship]

Kubota Technical Dept got back to me today, the pressures listed in my repair manual are correct, the higher pressure's listed are for the newer tractor's. I have mine set at 350psi.

Curious how they defined newer? Newer within GL40 series as in -1,-2 or -3 or with the GL60 series? I didn稚 see a serial number break for the pressures.

 

[Kubota 2007]

According to the tech he did a serial number search to verify any service bulletins, then the went to the service manual as I did, and he gave me page numbers, the two pages in the service manual stated the same pressure for the six different L Series, and it doesn't break down gear,GST or HST. They are all the same.

 

[David_Kb7uns]

http://www.tractorbynet.com/forums/kubota-owning-operating/162507-low-hydraulic-fluid.html
http://www.tractorbynet.com/forums/kubota-owning-operating/199241-l3130-hydraulic-pressure.html
http://www.tractorbynet.com/forums/kubota-owning-operating/310465-you-got-me-under-pressure.html

There is a feature on the net called google.

for example put this into google:
hydraulic pressure low kubota dealer site: and then put in the site tractorbynet.
If I actually put it in the example it's transformed to a url and I tried editing it 5 times.

The first thread quoted was for low fluid level
Second thread was for low loader pressure
Third was for low loader pressure on a BX

If your going to tell people to use google and then quote searches make sure they are on the correct subject
HE IS LOOKING FOR PTO CLUTCH PRESSURE NOT LOADER, BIG DIFFERENCE read and comprehend question

AND MOST THE TIME GOOGLE DOES NOT GET THE RIGHT SEARCH ANYWAY with their stupid auto correct and paid results

David