REMOTE HYDRAULICS

[John_R]

Hi Eddie,

Attached is a picture that should illustrate what I was trying to describe. I have several others pictures and some scans from my YM2310D parts manual and my YM276D service manual (very similar US market equivalent tractor) that give more technical details.

If you look closely at the picture you can see a faint 'O' near the top hose connection and a faint 'I' near the bottom hose connection.

HTH.

John

 

[Eddie]

Thanks John.
I don't find anything like that on my 2020.

I have a couple of 3 port hydraulic manifolds ordered and am going to make manifolds for mine.

 

[lens12]

The YM2020 should have the existing inlet/outlet ports To make them work properly a headless plug needs to be screwed in the back of the inlet port to block the passage between the IN & OUT ports. This is described in the YM276 & YM226 op manuals

 

[Eddie]

The YM2020 should have the existing inlet/outlet ports To make them work properly a headless plug needs to be screwed in the back of the inlet port to block the passage between the IN & OUT ports. This is described in the YM276 & YM226 op manuals

Anyone have one of these manuals that could scan a page and send it to me?

Thanks

 

[kmosabe]

OK, for a Yanmar 1300 without the schematics listed prior (NO in/out markings) and the need only to operate max two remotes. I will need an open spool with two remotes, with no PBY. I will cut the high pressure line, from the pump, attach to the in marking of the spool. The outlet of the spool will attach to the other cut end that goes to the three point resovoir. Is this correct? My last question is when I operate the remote hydraulic, will I loose power to the three point? If one of the remotes is operating the tilt for a small rear bucket, will the three point loose hydraulic pressure and go down? Sorry for all the reservations but want to MAKE SURE, I do not mess anything up.

 

[MadReferee]

OK, for a Yanmar 1300 without the schematics listed prior (NO in/out markings) and the need only to operate max two remotes. I will need an open spool with two remotes, with no PBY. I will cut the high pressure line, from the pump, attach to the in marking of the spool. The outlet of the spool will attach to the other cut end that goes to the three point resovoir. Is this correct?

Yes. But it won't go to any reservior, it will go to the 3pt and then to the reservoir. Everything is in series remember.

My last question is when I operate the remote hydraulic, will I loose power to the three point?

Depends on what you consider "power". All fluid is being directed to the remote valve. All the 3pt will get is the neutral pressure exhaust fluid from the cylinders connected to the remote valve. The 3pt will not be operable but the 3pt cylinder will remain fixed. See below.

If one of the remotes is operating the tilt for a small rear bucket, will the three point loose hydraulic pressure and go down?

No. However, if the 3pt is simultaneously activated it may or may not. The 3pt is actually a valve and a cylinder, not unlike any other valve/cylinder combination. When the 3pt valve lever is in a neutral position no fluid is flowing to the 3pt cylinder, just like any other aux valve.

What will happen is that the 3pt cannot be operated as expected while the remote valve is actuated. For example, you will have problems raising or lowering the 3pt while the remote valve is actuated. That is because the flow going to the 3pt from the valve will be neutral pressure cylinder exhaust fluid not fluid from the pump. This will not be enough to work the 3pt efficiently if at all.

 

[kmosabe]

Thanks to all that helped. My last question before I buy a spool, what size should I get. My tractors hydraulic pump puts out 3.76 g/pm. Some spool sizes got pretty large, should I try and match a similiar size spool. Does it make a difference if for example e-bay has one that is 25 g/pm but is cheap. I know the spool will crank out only what it is fed, but I do not know the internal mechanisms of the spool and was wondering if it says it is a 10 g/pm spool if it requires 10 g/pm of feed from the tractor for it to work, or if it will work no matter what but will only put out the 3.76 g/pm.

 

[Ductape]

John

Could you post pictures of what you are talking about. I'm trying to look at my 2020 to see if I have anything like that.

I have a picture of mine i'll post, but it wasn't taken in the best light. My hydraulic block is located under my seat, on the right side of my tractor. If you can locate your high pressure line, you should be able to follow it back to where it will flow into your rear end. I too set out to add remotes with a three spool valve on my US spec YM186D. I read here many times "cut your pressure line, cut your pressure line, cut your pressure line". Luckily, a member here, Deanbro , steered me straight ! He photocopied and mailed me hard copies out of his manual (from the UK !!!!) which clearly show how to tap into your hydraulic block. THANK YOU AGAIN DEANBRO !!! I guess if you have no block.... then its back to cutting into your pressure line. There were two plugs on my block clearly marked "IN" and "OUT". After removing the IN plug, you then thread a 1/4" headless pipe plug into the bottom of the block. This blocks pressurized fluid from going directly to the 3ph and diverts it out the OUT port. The OUT line is then plumbed to your IN port in yout aux spool. The OUT line from your aux spool is then plumbed back to your sump. Your PBY port on your aux spool is then plumbed back to the IN port on the hydraulic block (the same one you put the plug in the bottom of). I can get some pictures for you if we get some sunlight around here. I strongly advise you to only do this if you have the correct manual, or deal with someone who is farmiliar with Yanmar's hydraulic system, as you can destroy your hydraulic pump very quickly. I have been through this within the past couple weeks when i added a front end loader to my tractor..... only difference is my aux spool is up near my steering wheel instead of mounted on the fender or where ever you mount yours. Also..... do a little reaserch on this site. There is actually plenty of info here on hydraulics. I was also lucky enough to get a little advise from MadReferee !

 

[Ductape]

Thanks to all that helped. My last question before I buy a spool, what size should I get. My tractors hydraulic pump puts out 3.76 g/pm. Some spool sizes got pretty large, should I try and match a similiar size spool. Does it make a difference if for example e-bay has one that is 25 g/pm but is cheap. I know the spool will crank out only what it is fed, but I do not know the internal mechanisms of the spool and was wondering if it says it is a 10 g/pm spool if it requires 10 g/pm of feed from the tractor for it to work, or if it will work no matter what but will only put out the 3.76 g/pm.

I would look for a spool that is rated for 10 GPM or less

 

[MadReferee]

Thanks to all that helped. My last question before I buy a spool, what size should I get. My tractors hydraulic pump puts out 3.76 g/pm. Some spool sizes got pretty large, should I try and match a similiar size spool. Does it make a difference if for example e-bay has one that is 25 g/pm but is cheap. I know the spool will crank out only what it is fed, but I do not know the internal mechanisms of the spool and was wondering if it says it is a 10 g/pm spool if it requires 10 g/pm of feed from the tractor for it to work, or if it will work no matter what but will only put out the 3.76 g/pm.

Actually I would look for something in the 5 gpm range. After 5 gpm the valves physically start to get much bigger. The 25 gpm valve you mention probably weighs more than your tractor .

Eaton-Cessna makes a very nice 5 gpm valve with 1, 2 or 3 spools, with or without a power beyond sleeve. Several people here on TBN have used the Eaton-Cessna for thier TNT setups on small tractors like Kubota B2410/B7510's. It will work just fine on your tractor too.

Surplus Center Eaton-Cessna 2 spool valve