Kubota ST-30 (europe)

[brytter]

Kubota ST-30(europe) can't move or steer

Hi.

I'm trying to help a friend of mine, who is in the process of repairing af Kubota ST-30 - more specific it seems to be the hydrostatic that won't work.

However nobody i Denmark, knows anything about this vehicle and even so nobody has any exploided schemes over the hydrostatic.

An when I go to Kobuta homepage i can't find the model at all.

So does anyone know if the tractor in fact i named something else and does anyone has some diagrams over the hydrostatic.

The tractor can't move back or forth and the servo dosen't work either.

Would really appreciate if anyone can help us out on this one.

Regards

Benny

 

[North Idaho Wolfman]

Sounds like a hydraulic system or pump problem! It controls Hydro, steering and Lift.
I found that it's a 30 HP model.
Is it 4 wheel drive?

Looks like it might be the same or close to a B2910.
Give me a right and left pick of under the hood (bonnet) and I can check that against the pictures of that model.

 

[Rob]

hi, ST30 is correct, and you should have no problem getting info on it.
there are lots of st30's over here in the UK , and a lot do seem to have issues with the HST pump etc.

i may a have some tech specs on my laptop in the garage, i'll reply later.
rgds
rob

 

[hodge]

Welcome to OTT, brytter!
Some answers come easy, some come hard, but the people in this forum community will help you if it is at all possible.

 

[brytter]

I appreciate your help.

I will take some photos tonight and post them.

Would be very nice to have some tech specs, diagrams and so

Regards
Benny

 

[brytter]

New info

If you pump the pedal (forward/reverse) 10 times then it can drive a little, but not optimal. If you let go of the pedel it would stop again and you have to pump again to get it moving.

It is a 4x4

Apparantly he does not have a powersteering problem

Still hope to get help

/Benny

 

[brytter]

Sounds like a hydraulic system or pump problem! It controls Hydro, steering and Lift.
I found that it's a 30 HP model.
Is it 4 wheel drive?

Looks like it might be the same or close to a B2910.
Give me a right and left pick of under the hood (bonnet) and I can check that against the pictures of that model.

Here are some images of the Kubota ST30

 

[Topi]

These might help to fix st-30

www.kubota.cz/data/manualy/all-tractors-wsm-en.pdf
www.kubota.cz/data/manualy/st-alpha-wsm-en.pdf
www.kubota.cz/data/manualy/b-10-wsm-en.pdf

search for WSM with words:
kubota.cz/data/manualy -gobookee
search for FRS with words:
kubota.cz/data/normocasy

These might help to fix other kubota
www.kubota.cz/data/manualy/l-3200-wsm-en.pdf
www.kubota.cz/data/manualy/gr-1600-ii-wsm-en.pdf
www.kubota.cz/data/manualy/bx-2350-wsm-en.pdf
www.kubota.cz/data/manualy/gzd-15-hd-ld-wsm-en.pdf
www.kubota.cz/data/manualy/stv-wsm-en.pdf
www.kubota.cz/data/manualy/f-80-wsm-en.pdf
www.kubota.cz/data/manualy/l-30-wsm-en.pdf
www.kubota.cz/data/manualy/g23,g26-wsm.pdf
www.kubota.cz/data/manualy/b-30-wsm-en.pdf
www.kubota.cz/data/manualy/gr-2100-wsm-en.pdf
www.kubota.cz/data/manualy/m9540-low-profile.pdf
www.kubota.cz/data/manualy/bx-2350-wsm-de.pdf
www.kubota.cz/data/manualy/m-8200-n-wsm-en.pdf
www.kubota.cz/data/manualy/la1403-celni-nakladac-wsm.pdf
www.kubota.cz/data/manualy/m108-s-wsm.pdf
www.kubota.cz/data/manualy/gr-1600-ii-wsm-de.pdf
www.kubota.cz/data/manualy/g23,g26-wsm.pdf
www.kubota.cz/data/manualy/stv-wsm-en.pdf
www.kubota.cz/data/manualy/l-3200-wsm-de.pdf
www.kubota.cz/data/manualy/zd326-wsm.pdf
www.kubota.cz/data/manualy/la1403ec-wsm.pdf
www.kubota.cz/data/manualy/m-9000-supplement-wsm-en.pdf
www.kubota.cz/data/manualy/f-60-wsm-de.pdf
www.kubota.cz/data/manualy/bx-2200-wsm-en.pdf
www.kubota.cz/data/manualy/m6040,m7040-narrow-wsm.pdf
www.kubota.cz/data/manualy/la1403-celni-nakladac-wsm.pdf
www.kubota.cz/data/manualy/b-10-wsm-de.pdf
www.kubota.cz/data/manualy/rtv-900-wsm-en.pdf
ALL FOR FREE. ENJOY

 

[brytter]

These might help to fix st-30

www.kubota.cz/data/manualy/all-tractors-wsm-en.pdf
www.kubota.cz/data/manualy/st-alpha-wsm-en.pdf
www.kubota.cz/data/manualy/b-10-wsm-en.pdf

search for WSM with words:
kubota.cz/data/manualy -gobookee
search for FRS with words:
kubota.cz/data/normocasy

These might help to fix other kubota
www.kubota.cz/data/manualy/l-3200-wsm-en.pdf
www.kubota.cz/data/manualy/gr-1600-ii-wsm-en.pdf
www.kubota.cz/data/manualy/bx-2350-wsm-en.pdf
www.kubota.cz/data/manualy/gzd-15-hd-ld-wsm-en.pdf
www.kubota.cz/data/manualy/stv-wsm-en.pdf
www.kubota.cz/data/manualy/f-80-wsm-en.pdf
www.kubota.cz/data/manualy/l-30-wsm-en.pdf
www.kubota.cz/data/manualy/g23,g26-wsm.pdf
www.kubota.cz/data/manualy/b-30-wsm-en.pdf
www.kubota.cz/data/manualy/gr-2100-wsm-en.pdf
www.kubota.cz/data/manualy/m9540-low-profile.pdf
www.kubota.cz/data/manualy/bx-2350-wsm-de.pdf
www.kubota.cz/data/manualy/m-8200-n-wsm-en.pdf
www.kubota.cz/data/manualy/la1403-celni-nakladac-wsm.pdf
www.kubota.cz/data/manualy/m108-s-wsm.pdf
www.kubota.cz/data/manualy/gr-1600-ii-wsm-de.pdf
www.kubota.cz/data/manualy/g23,g26-wsm.pdf
www.kubota.cz/data/manualy/stv-wsm-en.pdf
www.kubota.cz/data/manualy/l-3200-wsm-de.pdf
www.kubota.cz/data/manualy/zd326-wsm.pdf
www.kubota.cz/data/manualy/la1403ec-wsm.pdf
www.kubota.cz/data/manualy/m-9000-supplement-wsm-en.pdf
www.kubota.cz/data/manualy/f-60-wsm-de.pdf
www.kubota.cz/data/manualy/bx-2200-wsm-en.pdf
www.kubota.cz/data/manualy/m6040,m7040-narrow-wsm.pdf
www.kubota.cz/data/manualy/la1403-celni-nakladac-wsm.pdf
www.kubota.cz/data/manualy/b-10-wsm-de.pdf
www.kubota.cz/data/manualy/rtv-900-wsm-en.pdf
ALL FOR FREE. ENJOY

Thank you very much.

Now at last the Kobuta is driving....but only in reverse

Probably we have to dismantle it again.

Any quick ideas?

/Benny

 

[North Idaho Wolfman]

Quick idea #1
Sell it and buy one that's not broken!
HAHAHAHA

I assume that you now have the service manual, just follow the troubleshooting guide in it, it should lead you down the right path!
When your working on it the littlest detail or part can cause some of the biggest problems, so take your time and be thorough and meticulous!