MF 135 loader hydraulic issue.

I just finished installing a MF 200 series FEL on to my MF 135. I am using the tractors internal resovoir and hydraulic pump. I realize using the internal pump will limit the whieght capacity and speed of the loader but all it will be doing is cleaning a few small drive ways of snow.

I have installed a divertor valve and a single stick 2 spool loader control valve with float position. The loader valve supply line comes from the divertor. The return line is plumbed into the trans housing return port under the divertor valve. My problem is when the divertor valve lever is opposite then in pic and the square handled lever is in constant pumping position the loader goes up but not down. the bucket will not curl or dump. If I move the 3pt hitch lever down and lower the whieght box then start lifting 3pt hitch as the arms are lifting the loader arms and bucket will work fine until 3pt hitch reaches the top of travel then the loader will no longer function. Wondering if I have my loader supply in the wrong spot or what could be the problem.

(reply to post at 17:20:55 11/01/18)

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Not sure why my pics did not show up?

When the three point arms are fully up, the internal linkage shuts the pump off. The position control lever needs to be in the "constant pumping" area to keep working as it over rides the linkage and keeps the pump on. DO NOT use this spot at any other time other than valve use, or relief valve will blow all the time.

would really like to see those pic's

Thanks for the reply. This issue happens when the lever is in the constant pumping position. If my pic don't appear I will try to explain.

divetor valve lever on left states lift arms, lever center is a pressure port that is plugged, lever to right is another pressure port which is the one I am suppling the loader valve. This issue happens when the lever is in the right side position. I was under the impression the 3pt hitch would only lift when divertor valve lever is in the lift arm position but this does not seem the case.

Your diverter valve may have 3 positions, 3 point, 3 point and remote or remote only. It sounds like you have it in the position where it is operating both the 3 point and the remote cylinder. Try turning the handle 180 degrees from where it is in the picture and see what happens.

(quoted from post at 04:27:25 11/02/18) Your diverter valve may have 3 positions, 3 point, 3 point and remote or remote only. It sounds like you have it in the position where it is operating both the 3 point and the remote cylinder. Try turning the handle 180 degrees from where it is in the picture and see what happens.

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Thanks Bob it was 180 from where it is in pic as that is the port I used to feed the control valve. I will go out today and experiment alittle more.

Just had a thought. If the right port in pic is lift arms, is the center aux only, and left port lift arms and aux? Might try and relocate my loader control supply into the center port and try that.

Why aren't you using the diverter valve RETURN port?? Look to me like you are suppling the loader valve with TWO supply lines. Is one line just under the diverter in the 3/8 port at the lift cover corner? That's a feed port too with the three point lift cylinder. Look at the loader valve inlet and outlet ports. The inlet should go to the diverter OUTLET, and the return to the diverter RETURN.

(quoted from post at 05:37:02 11/02/18) Why aren't you using the diverter valve RETURN port?? Look to me like you are suppling the loader valve with TWO supply lines. Is one line just under the diverter in the 3/8 port at the lift cover corner? That's a feed port too with the three point lift cylinder. Look at the loader valve inlet and outlet ports. The inlet should go to the diverter OUTLET, and the return to the diverter RETURN.

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I thought I read somewhere that the port on the side of the trans housing was a return but if its a pressure that could make sense. I will relocate my return to the divertor return port first then try. thank you. Would you know if the port I am using on the divertor valve is remote only or am I tapped into the lift arm and remote port?

Looks to me like you are tapped into both the remote feed port on the diverter valve AND the pressure port on the lift cover. There is a return 3/8 pipe port under the seat on the LIFT cover, but I would use the diverter valve return port. Right now it looks to me like you have feed lines in both the loader valve inlet and return ports, it won't work like that.

(quoted from post at 08:12:28 11/02/18) Looks to me like you are tapped into both the remote feed port on the diverter valve AND the pressure port on the lift cover. There is a return 3/8 pipe port under the seat on the LIFT cover, but I would use the diverter valve return port. Right now it looks to me like you have feed lines in both the loader valve inlet and return ports, it won't work like that.

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I am thinking you are correct. Having pressure both sides of the valve would cause the issue and when the lift arms are going up this is most likely allowing the pressure port in the trans housing to act like a return and allow oil flow back. I did not get a chance to look at it today but I will relocate my return to the divertor valve and let you know. Thanks.

Well problem solved here is the update. As dieseltech suggested I had my return line plumbed into a pressure port. I relocated the loader control line into the return port of the divertor valve. Thanks for all the suggestions.