mf 65 3 pt lift question

a couple of months ago i purchased a mf 65 to use in my garden and everything worked i pulled a 6 foot disk several times and then rowed up with a middle buster and parked the tractor for 3 weeks when i cranked it up the 3 pt lift would raise at all does anyone have any ideas on where should i start looking thanks for the help in advanced.
 
up update i took off the stand pipe cover off i have no fluid at all so i took off right side plate (dip stick) i could see oil splashing around the sstand pipe pryoir to removing cover any ideas what i should do next?
 
Sounds like a stuck control valve.....reach in through side cover with engine stopped and work the valve in and out a few times.....Sam
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I have tookin off the dipstick cover moved the lift linkage watched it move with engine not running I felt down to where the valve is going in and out of the pump if you assist it it may move 1/4 in more but it seems as though it was going in and out fine ..... next I removed the standpipe cover start the engine moved the lift ... no oil present am I safe to assume that the pump for whatever reason is not working correctly? what would you try next never owned a tractor until 3 months ago and I'm trying to learn quickly.
 
By where the stand pipe goes into the pump there is a pressure relief valve. It could be stuck open if you oil splashing around by where the stand pipe is before you removed the stand pipe.
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(quoted from post at 21:48:42 05/24/16) By where the stand pipe goes into the pump there is a pressure relief valve. It could be stuck open if you oil splashing around by where the stand pipe is before you removed the stand pipe.
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seen a pressure relief valve facing the rear of the tractor just behind the lift linkage nothing wascoming out of it could the filter completely clog just sitting there for 3 weeks? or is there some thing internal going on within the pump? btw thanks for all the help.
 
also this model is a cndw 688316 i seen on the internet on the 165 w/multipower the tractor has the split in 2 mine is a multi power 65 built in 62 can i get the pump out without spliting it in 2 ?
 
With the extra pump, and the clutch pack for the multi-power you have to split it at the rear end. If your tractor didn't have the extra pump (which it needs for multi-power) you could just take the lift cover off to get to the pump. I would try cleaning, or replacing the strainer, and change oil first (you may get lucky). Since you did see some oil plashing by the stand pipe, and its not the pressure valve that is a bad o-ring on the stand pipe.
 
thanks for all the advise I will put new orings on the standpipe then take the left side pto sector off and get the filter/screen off and replace the thought did cross my mind that either no fluid is coming into the pump or oring broke in the internal side of the pump.
 
(quoted from post at 14:43:38 05/26/16) thanks for all the advise I will put new orings on the standpipe then take the left side pto sector off and get the filter/screen off and replace the thought did cross my mind that either no fluid is coming into the pump or oring broke in the internal side of the pump.
k i took the filter off and found that the filter was gone allowing stuff into pump so my next question is mine is a multipower to get the pump out do i need to split/seperate the tractor or can it be replaced by removing the top cover?and if it has to be split I need ideas on how to seperate.
 
(quoted from post at 18:33:31 05/28/16)
(quoted from post at 14:43:38 05/26/16) thanks for all the advise I will put new orings on the standpipe then take the left side pto sector off and get the filter/screen off and replace the thought did cross my mind that either no fluid is coming into the pump or oring broke in the internal side of the pump.
k i took the filter off and found that the filter was gone allowing stuff into pump so my next question is mine is a multipower to get the pump out do i need to split/seperate the tractor or can it be replaced by removing the top cover?and if it has to be split I need ideas on how to seperate.
fter looking at it closer i suspect my problem is in the lift valve I filled the tractor with oil I then took an air hose and blew in reverse from the top of stand pipe i got bubbles at the filter and at the lift valve no matter where I moved lift lever now to believe that my problem is in the lift valve is there a way to remove rebuild or replace it without removing the pump?
 
Hey, please take no offense but if the lift was working and you've only recently had this model is there a chance you lowered ALL the levers on the hydraulics? This is something I would do much like starting off with the foot brake still locked. Just asking.
 
(quoted from post at 12:12:08 05/31/16) Hey, please take no offense but if the lift was working and you've only recently had this model is there a chance you lowered ALL the levers on the hydraulics? This is something I would do much like starting off with the foot brake still locked. Just asking.
ndrew no offence taken I have lowered raised tried different combos raised and dropped the lift arms... nothing just recently I have back filled the stand pipe with seafoam / oil with the lift lever in full lift position the oil will stay in the funnel I used to fill it with as I go to the lower position it strart to drain into the pump with engine running or not I did notice that the lift lever when in full lift pos. it wants to spring back to lower pos.
 
(quoted from post at 17:39:34 05/31/16)I did notice that the lift lever when in full lift pos. it wants to spring back to lower pos.



That's what you need to look at is why it wants to spring back to a lower position, it shouldn't do that. Either something in the quadrant linkage got messed up, or the control valve in the pump is not moving all way which makes the linkage flex, and makes the lift lever spring back down to a lower position.
 
(quoted from post at 19:35:08 05/31/16)
(quoted from post at 17:39:34 05/31/16)I did notice that the lift lever when in full lift pos. it wants to spring back to lower pos.



That's what you need to look at is why it wants to spring back to a lower position, it shouldn't do that. Either something in the quadrant linkage got messed up, or the control valve in the pump is not moving all way which makes the linkage flex, and makes the lift lever spring back down to a lower position.
hanks ptfarmer ok I'm leaning towards the control valve being thr problem if I recall one of many time I have drained the mineral oil out of the belly I remember seeing the control valve body 3/4 to 1/2 inch thick sticking out away from the pump and as I moved the lever to lift it would go in and out freely but on replacement pumps in the pictures I have seen there is only a small needle 1/16 to 1/8 thick the actuating arm controls if the body of the control valve is come out when it is not suppose to what holds it in place please forgive the wrong name for these parts I'm new at this I'll get better as I go.
 

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