Change Hydraulic fluid up ok down slow: Mitsubishi  -- Other Tractor Brands Discussion Forum and Review Change Hydraulic fluid up ok down slow: Mitsubishi -- Other Tractor Brands Discussion Forum

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Discussion Boards > Active Subjects > Messages as Posted > Mitsubishi Forum

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 04-06-2013, 01:36 Post: 186587
frank016



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 Change Hydraulic fluid up ok down slow

Changed the transmission oil, now the hydraulics are very very slow going down!! Up is fine. This is a MT 4700 model.
Anyone out there that can help??
Thanks Frank






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 04-06-2013, 08:17 Post: 186588
hardwood

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 Change Hydraulic fluid up ok down slow

Frank;

So long as it worked properly before the change it has to be something simple, we hope.

It has the symptoms of an air lock somewhere in the system.

Can you disconnect the hose couplers from the down side of the loader cylinders and bleed air from them?

Is there perhaps a quick coupler that is popped out a bit and trapping the air or fluid from returning to the sump?

When turning the steering wheel lock to lock does it operate normaly, or does it hiss and growl?

Not being familliar with your brand of tractor there are likely lots of other simple things that it can be too. You will find it don't give up.

Frank, another Frank.






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 04-06-2013, 14:10 Post: 186596
frank016



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 Change Hydraulic fluid up ok down slow

The front hydrauilcs work fine! Its the 3 point hitch that is the problem. This tractor is about 19hp.
Thanks Frank






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 04-06-2013, 18:36 Post: 186598
hardwood

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 Change Hydraulic fluid up ok down slow

Frank;

Most small tractors have a speed control valve for the drop speed of the three point hitch usually located just below the front of the seat. Look in your owners manual for instructions on using this valve. It may be that the changing of the fluids diosdloged a piece of something that has the valve clogged.

Frank.






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 04-06-2013, 21:14 Post: 186599
kthompson



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 Change Hydraulic fluid up ok down slow

Think Hardwood is on the right track. Look for a knob that control the down speed on the 3 pth hitch. Often a knob between your legs on the tractor.






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 04-07-2013, 01:10 Post: 186605
frank016



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 Change Hydraulic fluid up ok down slow

Wow! Yes there is some sort of knob thingy at the front of the seat. It looks like it has an ajusting screw too. Don't have a manual, so I will just remove the knob an have a look-see.
Thank you so much Frank!!!






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 04-07-2013, 09:43 Post: 186606
hardwood

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 Change Hydraulic fluid up ok down slow

WOAH Frank!!!

I don't think you should screw the adjusting valve completely out. I don't know this for sure but there may be a ball and/or spring that may come out too. I don't think you want that to happen. Just turn it out a couple turns then try it, if that don't help, a couple more turns, that should be plenty.

Any that I have been exposed to screw out to speed up the drop, that may not be so with your tractor it may screw in, but I'd really doubt it. Try a couple turns both directions.

Frank.






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 04-08-2013, 19:33 Post: 186613
sherlock



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 Change Hydraulic fluid up ok down slow

Underneath the front on the seat is a small lever - left down slow - right down fast - try moving the lever






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 04-09-2013, 01:45 Post: 186616
frank016



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 Change Hydraulic fluid up ok down slow

I fiddled with the knob at the front of the seat. Now the hydraulics work perfectly!!
Unreal! THANK YOU SO MUCH FRANK!!!!!!!!!!!!!!!!!!!






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 04-09-2013, 01:57 Post: 186617
frank016



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 Change Hydraulic fluid up ok down slow

The hydraulics work so well now, its like I have down pressure!!
Now where can I find a manual???? Mitsubishi MT 4700
Thanks a Million! Frank






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Discussion Boards > Active Subjects > Messages as Posted > Mitsubishi Forum

Thread 186587 Filter by Poster:
frank016 5 | hardwood 3 | kthompson 1 | sherlock 1 |

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